Version Packages (#3180)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

.github/CONTRIBUTING.md

@@ -63,9 +63,9 @@ To start your local version of GitBook, run the command `bun dev`.
 
 When running the development server, published GitBook sites can be rendered through your local version at `http://localhost:3000/`.
 
-For example, our published docs can be viewed using the local version by visiting `http://localhost:3000/docs.gitbook.com` after running the development server.
+For example, our published docs can be viewed using the local version by visiting `http://localhost:3000/gitbook.com/docs` after running the development server.
 
-You can visit any published GitBook site behind your development server. Please make sure your site is [published publicly](https://docs.gitbook.com/published-documentation/publish-your-content-as-a-docs-site) to ensure you can view the site correctly in your development version.
+You can visit any published GitBook site behind your development server. Please make sure your site is [published publicly](https://gitbook.com/docs/published-documentation/publish-your-content-as-a-docs-site) to ensure you can view the site correctly in your development version.
 
 ### Commit your update
 

.github/composite/deploy-cloudflare/action.yaml

@@ -0,0 +1,81 @@
+name: 'Deploy cloudflare'
+description: 'Deploy GitBook to Cloudflare'
+inputs:
+  opItem:
+    description: '1Password item to load secrets from'
+    required: true
+  opServiceAccount:
+    description: '1Password service account token'
+    required: true
+  apiToken:
+    description: 'Cloudflare API token'
+    required: true
+  accountId:
+    description: 'Cloudflare account ID'
+    required: true
+  environment:
+    description: 'Cloudflare environment to deploy to (staging, production, preview)'
+    required: true
+  deploy:
+    description: 'Deploy as main version for all traffic instead of uploading versions'
+    required: true
+  commitTag:
+    description: 'Commit branch to associate with the deployment'
+    required: true
+  commitMessage:
+    description: 'Commit message to associate with the deployment'
+    required: true
+outputs:
+    deployment-url: 
+      description: "Deployment URL"
+      value: ${{ steps.deploy.outputs.deployment-url }}
+runs:
+    using: 'composite'
+    steps:
+        - name: Setup Bun
+          uses: ./.github/composite/setup-bun
+        - name: Install dependencies
+          run: bun install --frozen-lockfile
+          shell: bash
+          env:
+              PUPPETEER_SKIP_DOWNLOAD: 1
+        - name: Load secret
+          uses: 1password/load-secrets-action@v2
+          env:
+            OP_SERVICE_ACCOUNT_TOKEN: ${{ inputs.opServiceAccount }}
+            GITBOOK_URL: ${{ inputs.opItem }}/GITBOOK_URL
+            GITBOOK_ICONS_URL: ${{ inputs.opItem }}/GITBOOK_ICONS_URL
+            GITBOOK_ICONS_TOKEN: ${{ inputs.opItem }}/GITBOOK_ICONS_TOKEN
+            NEXT_SERVER_ACTIONS_ENCRYPTION_KEY: ${{ inputs.opItem }}/NEXT_SERVER_ACTIONS_ENCRYPTION_KEY
+            GITBOOK_SECRET: ${{ inputs.opItem }}/GITBOOK_SECRET
+            GITBOOK_APP_URL: ${{ inputs.opItem }}/GITBOOK_APP_URL
+            GITBOOK_API_URL: ${{ inputs.opItem }}/GITBOOK_API_URL
+            GITBOOK_API_PUBLIC_URL: ${{ inputs.opItem }}/GITBOOK_API_PUBLIC_URL
+            GITBOOK_API_TOKEN: ${{ inputs.opItem }}/GITBOOK_API_TOKEN
+            GITBOOK_INTEGRATIONS_HOST: ${{ inputs.opItem }}/GITBOOK_INTEGRATIONS_HOST
+            GITBOOK_IMAGE_RESIZE_SIGNING_KEY: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_SIGNING_KEY
+            GITBOOK_IMAGE_RESIZE_URL: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_URL
+            GITBOOK_IMAGE_RESIZE_MODE: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_MODE
+            GITBOOK_ASSETS_PREFIX: ${{ inputs.opItem }}/GITBOOK_ASSETS_PREFIX
+            GITBOOK_FONTS_URL: ${{ inputs.opItem }}/GITBOOK_FONTS_URL
+        - name: Build worker
+          run: bun run turbo build:v2:cloudflare
+          env:
+            GITBOOK_RUNTIME: cloudflare
+          shell: bash
+        - id: deploy
+          name: Deploy to Cloudflare
+          uses: cloudflare/wrangler-action@v3.14.0
+          with:
+              apiToken: ${{ inputs.apiToken }}
+              accountId: ${{ inputs.accountId }}
+              workingDirectory: ./
+              wranglerVersion: '4.10.0'
+              environment: ${{ inputs.environment }}
+              command: ${{ inputs.deploy == 'true' && 'deploy' || format('versions upload --tag {0} --message "{1}"', inputs.commitTag, inputs.commitMessage) }} --config ./packages/gitbook-v2/wrangler.jsonc
+        - name: Outputs
+          shell: bash
+          env:
+            DEPLOYMENT_URL: ${{ steps.deploy.outputs.deployment-url }}
+          run: |
+              echo "URL: ${{ steps.deploy.outputs.deployment-url }}"

.github/composite/deploy-vercel/action.yaml

@@ -1,15 +1,21 @@
 name: 'Deploy vercel'
 description: 'Deploy GitBook to Vercel'
 inputs:
-  vercel-org:
+  vercelOrg:
     description: 'Vercel organization'
     required: true
-  vercel-project:
+  vercelProject:
     description: 'Vercel project'
     required: true
-  vercel-token:
+  vercelToken:
     description: 'Vercel token'
     required: true
+  opItem:
+    description: '1Password item to load secrets from'
+    required: true
+  opServiceAccount:
+    description: '1Password service account token'
+    required: true
   environment:
     description: 'Environment to deploy to'
     required: true
@@ -27,32 +33,48 @@ runs:
           shell: bash
           env:
               PUPPETEER_SKIP_DOWNLOAD: 1
-        - name: Sets env vars for environment
-          shell: bash
-          run: |
-              echo "VERCEL_ENVIRONMENT=${{ inputs.environment }}" >> $GITHUB_ENV
         - name: Pull Vercel Environment Information
-          run: bun run vercel pull --yes --environment=$VERCEL_ENVIRONMENT --token=${{ inputs.vercel-token }}
+          run: bun run vercel pull --yes --environment=${{ inputs.environment }} --token=${{ inputs.vercelToken }}
           shell: bash
           env:
-            VERCEL_ORG_ID: ${{ inputs.vercel-org }}
-            VERCEL_PROJECT_ID: ${{ inputs.vercel-project }}
+            VERCEL_ORG_ID: ${{ inputs.vercelOrg }}
+            VERCEL_PROJECT_ID: ${{ inputs.vercelProject }}
+        - name: Load secret
+          uses: 1password/load-secrets-action@v2
+          env:
+            OP_SERVICE_ACCOUNT_TOKEN: ${{ inputs.opServiceAccount }}
+            GITBOOK_URL: ${{ inputs.opItem }}/GITBOOK_URL
+            GITBOOK_ICONS_URL: ${{ inputs.opItem }}/GITBOOK_ICONS_URL
+            GITBOOK_ICONS_TOKEN: ${{ inputs.opItem }}/GITBOOK_ICONS_TOKEN
+            GITBOOK_SECRET: ${{ inputs.opItem }}/GITBOOK_SECRET
+            GITBOOK_APP_URL: ${{ inputs.opItem }}/GITBOOK_APP_URL
+            GITBOOK_API_URL: ${{ inputs.opItem }}/GITBOOK_API_URL
+            GITBOOK_API_PUBLIC_URL: ${{ inputs.opItem }}/GITBOOK_API_PUBLIC_URL
+            GITBOOK_API_TOKEN: ${{ inputs.opItem }}/GITBOOK_API_TOKEN
+            GITBOOK_INTEGRATIONS_HOST: ${{ inputs.opItem }}/GITBOOK_INTEGRATIONS_HOST
+            GITBOOK_IMAGE_RESIZE_SIGNING_KEY: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_SIGNING_KEY
+            GITBOOK_IMAGE_RESIZE_URL: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_URL
+            GITBOOK_IMAGE_RESIZE_MODE: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_MODE
+            GITBOOK_ASSETS_PREFIX: ${{ inputs.opItem }}/GITBOOK_ASSETS_PREFIX
+            GITBOOK_FONTS_URL: ${{ inputs.opItem }}/GITBOOK_FONTS_URL
         - name: Build Project Artifacts
-          run: bun run vercel build --target=$VERCEL_ENVIRONMENT --token=${{ inputs.vercel-token }}
+          run: bun run vercel build --target=${{ inputs.environment }} --token=${{ inputs.vercelToken }}
           shell: bash
           env:
-            VERCEL_ORG_ID: ${{ inputs.vercel-org }}
-            VERCEL_PROJECT_ID: ${{ inputs.vercel-project }}
+            VERCEL_ORG_ID: ${{ inputs.vercelOrg }}
+            VERCEL_PROJECT_ID: ${{ inputs.vercelProject }}
+            GITBOOK_RUNTIME: vercel
         - name: Deploy Project Artifacts to Vercel
           id: deploy
           shell: bash
           run: |
-              DEPLOYMENT_URL=$(bun run vercel deploy --prebuilt --target=$VERCEL_ENVIRONMENT --token=${{ inputs.vercel-token }})
+              DEPLOYMENT_URL=$(bun run vercel deploy --prebuilt --target=${{ inputs.environment }} --token=${{ inputs.vercelToken }})
               echo "deployment-url=$DEPLOYMENT_URL" >> "$GITHUB_OUTPUT"
           env:
-            VERCEL_ORG_ID: ${{ inputs.vercel-org }}
-            VERCEL_PROJECT_ID: ${{ inputs.vercel-project }}
+            VERCEL_ORG_ID: ${{ inputs.vercelOrg }}
+            VERCEL_PROJECT_ID: ${{ inputs.vercelProject }}
         - name: Outputs
           shell: bash
           run: |
               echo "URL: ${{ steps.deploy.outputs.deployment-url }}"
+

.github/composite/setup-bun/action.yaml

@@ -3,15 +3,6 @@ description: 'Install Bun and cache dependencies'
 runs:
     using: 'composite'
     steps:
-        # We cache dependencies even if Bun is fast to avoid downloading fontawesome too many times
-        # and impacting bandwidth there.
-        - name: Cache bun
-          uses: actions/cache@v4
-          with:
-              path: ~/.bun/install/cache
-              key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lockb') }}-${{ hashFiles('**/bun.lock') }}
-              restore-keys: |
-                  ${{ runner.os }}-bun-
         - name: Setup bun
           uses: oven-sh/setup-bun@v2
           with:

.github/workflows/ci.yaml

@@ -7,316 +7,6 @@ on:
 env:
     NPM_TOKEN_READONLY: ${{ secrets.NPM_TOKEN_READONLY }}
 jobs:
-    deploy:
-        name: Deploy to Cloudflare Pages
-        runs-on: ubuntu-latest
-        permissions:
-            contents: read
-            deployments: write
-            issues: write
-            pull-requests: write
-            checks: write
-            statuses: write
-        outputs:
-            deployment-url: ${{ steps.deploy.outputs.deployment-url }}
-            deployment-alias-url: ${{ steps.deploy.outputs.deployment-alias-url }}
-        steps:
-            - name: Checkout
-              uses: actions/checkout@v4
-            - name: Setup Bun
-              uses: ./.github/composite/setup-bun
-            - name: Install dependencies
-              run: bun install --frozen-lockfile
-              env:
-                  PUPPETEER_SKIP_DOWNLOAD: 1
-            - name: Sets env vars for production
-              run: |
-                  echo "SENTRY_ENVIRONMENT=production" >> $GITHUB_ENV
-                  echo "GITBOOK_ASSETS_PREFIX=https://static.gitbook.com" >> $GITHUB_ENV
-              if: startsWith(github.ref, 'refs/heads/main')
-            - name: Sets env vars for preview
-              run: |
-                  echo "SENTRY_ENVIRONMENT=preview" >> $GITHUB_ENV
-              if: 1 && !startsWith(github.ref, 'refs/heads/main')
-            - name: Build Next.js with next-on-pages
-              run: bun run turbo gitbook#build:cloudflare
-              env:
-                  SENTRY_AUTH_TOKEN: ${{ secrets.SENTRY_AUTH_TOKEN }}
-                  NEXT_SERVER_ACTIONS_ENCRYPTION_KEY: ${{ secrets.NEXT_SERVER_ACTIONS_ENCRYPTION_KEY }}
-                  SENTRY_ORG: ${{ vars.SENTRY_ORG }}
-                  SENTRY_PROJECT: ${{ vars.SENTRY_PROJECT }}
-                  SENTRY_DSN: ${{ vars.SENTRY_DSN }}
-                  SENTRY_RELEASE: ${{ github.sha }}
-            - id: deploy
-              name: Deploy to Cloudflare
-              uses: cloudflare/wrangler-action@v3.14.0
-              with:
-                  apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
-                  accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
-                  workingDirectory: ./
-                  wranglerVersion: '3.82.0'
-                  command: pages deploy ./packages/gitbook/.vercel/output/static --project-name=${{ vars.CLOUDFLARE_PROJECT_NAME }} --branch=${{ github.ref == 'refs/heads/main' && 'main' || format('pr{0}', github.event.pull_request.number) }}
-            - name: Outputs
-              run: |
-                  echo "URL: ${{ steps.deploy.outputs.deployment-url }}"
-                  echo "Alias URL: ${{ steps.deploy.outputs.deployment-alias-url }}"
-            - name: Archive build output
-              uses: actions/upload-artifact@v4
-              with:
-                  name: build-output
-                  path: .vercel/
-            # Until https://github.com/cloudflare/wrangler-action/issues/301 is done
-            - name: Update Deployment Status to Success
-              env:
-                  DEPLOYMENT_URL: ${{ steps.deploy.outputs.deployment-url }}
-              run: |
-                  curl -X POST \
-                    -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
-                    -H "Accept: application/vnd.github.v3+json" \
-                    -d '{"state": "success", "target_url": "${{ steps.deploy.outputs.deployment-url }}", "description": "Deployed Preview URL for commit", "context": "cloudflare/preview"}' \
-                    https://api.github.com/repos/${{ github.repository }}/statuses/${{ github.sha }}
-    deploy-v2-vercel:
-        name: Deploy v2 to Vercel
-        runs-on: ubuntu-latest
-        permissions:
-            contents: read
-            deployments: write
-            issues: write
-            pull-requests: write
-            checks: write
-            statuses: write
-        outputs:
-            deployment-url: ${{ steps.deploy.outputs.deployment-url }}
-        steps:
-            - name: Checkout
-              uses: actions/checkout@v4
-            - name: Deploy ${{ github.ref == 'refs/heads/main' && 'production' || 'preview' }}
-              id: deploy
-              uses: ./.github/composite/deploy-vercel
-              with:
-                  environment: ${{ github.ref == 'refs/heads/main' && 'production' || 'preview' }}
-                  vercel-org: ${{ secrets.VERCEL_ORG_ID }}
-                  vercel-project: ${{ secrets.VERCEL_PROJECT_ID }}
-                  vercel-token: ${{ secrets.VERCEL_TOKEN }}
-    deploy-v2-vercel-staging:
-        name: Deploy v2 to Vercel (staging)
-        runs-on: ubuntu-latest
-        permissions:
-            contents: read
-            deployments: write
-            issues: write
-            pull-requests: write
-            checks: write
-            statuses: write
-        if: startsWith(github.ref, 'refs/heads/main')
-        outputs:
-            deployment-url: ${{ steps.deploy.outputs.deployment-url }}
-        steps:
-            - name: Checkout
-              uses: actions/checkout@v4
-            - name: Deploy staging
-              id: deploy
-              uses: ./.github/composite/deploy-vercel
-              with:
-                  environment: staging
-                  vercel-org: ${{ secrets.VERCEL_ORG_ID }}
-                  vercel-project: ${{ secrets.VERCEL_PROJECT_ID }}
-                  vercel-token: ${{ secrets.VERCEL_TOKEN }}
-    deploy-v2-cloudflare:
-        name: Deploy v2 to Cloudflare Worker
-        runs-on: ubuntu-latest
-        permissions:
-            contents: read
-            deployments: write
-            issues: write
-            pull-requests: write
-            checks: write
-            statuses: write
-        outputs:
-            deployment-url: ${{ steps.deploy.outputs.deployment-url }}
-        steps:
-            - name: Checkout
-              uses: actions/checkout@v4
-            - name: Setup Bun
-              uses: ./.github/composite/setup-bun
-            - name: Install dependencies
-              run: bun install --frozen-lockfile
-              env:
-                  PUPPETEER_SKIP_DOWNLOAD: 1
-            - name: Sets env vars for production
-              run: |
-                  echo "SENTRY_ENVIRONMENT=production" >> $GITHUB_ENV
-                  echo "GITBOOK_URL=https://open-2c.gitbook.com" >> $GITHUB_ENV
-                  echo "GITBOOK_ASSETS_PREFIX=https://static-2c.gitbook.com" >> $GITHUB_ENV
-              if: startsWith(github.ref, 'refs/heads/main')
-            - name: Sets env vars for preview
-              run: |
-                  echo "SENTRY_ENVIRONMENT=preview" >> $GITHUB_ENV
-              if: 1 && !startsWith(github.ref, 'refs/heads/main')
-            - name: Build worker
-              run: bun run turbo build:v2:cloudflare
-              env:
-                  SENTRY_AUTH_TOKEN: ${{ secrets.SENTRY_AUTH_TOKEN }}
-                  NEXT_SERVER_ACTIONS_ENCRYPTION_KEY: ${{ secrets.NEXT_SERVER_ACTIONS_ENCRYPTION_KEY }}
-                  SENTRY_ORG: ${{ vars.SENTRY_ORG }}
-                  SENTRY_PROJECT: ${{ vars.SENTRY_PROJECT }}
-                  SENTRY_DSN: ${{ vars.SENTRY_DSN }}
-                  SENTRY_RELEASE: ${{ github.sha }}
-            - id: deploy
-              name: Deploy to Cloudflare
-              uses: cloudflare/wrangler-action@v3.14.0
-              with:
-                  apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
-                  accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
-                  workingDirectory: ./
-                  wranglerVersion: '3.82.0'
-                  command: versions upload --config ./packages/gitbook-v2/wrangler.toml
-            - name: Outputs
-              run: |
-                  echo "URL: ${{ steps.deploy.outputs.deployment-url }}"
-    comment-deployments:
-        runs-on: ubuntu-latest
-        name: Comment Deployments
-        if: always() && !startsWith(github.ref, 'refs/heads/main')
-        needs:
-            - deploy
-            - deploy-v2-vercel
-            - deploy-v2-cloudflare
-        steps:
-            - name: Find GitHub Comment
-              uses: peter-evans/find-comment@v3
-              id: fc
-              with:
-                  issue-number: ${{ github.event.pull_request.number }}
-                  comment-author: 'github-actions[bot]'
-                  body-includes: 'Summary of the deployments'
-
-            - name: Create or update GitHub comment
-              uses: peter-evans/create-or-update-comment@v4
-              with:
-                  comment-id: ${{ steps.fc.outputs.comment-id }}
-                  issue-number: ${{ github.event.pull_request.number }}
-                  body: |
-                      Summary of the deployments:
-
-                      ### Version 1 (production)
-
-                      | Version | URL | Status |
-                      | --- | --- | --- |
-                      | Latest commit | [${{ needs.deploy.outputs.deployment-url }}](${{ needs.deploy.outputs.deployment-url }}) | ${{ needs.deploy.result == 'success' && '✅' || '❌' }} |
-                      | PR | [${{ needs.deploy.outputs.deployment-alias-url }}](${{ needs.deploy.outputs.deployment-alias-url }}) | ${{ needs.deploy.result == 'success' && '✅' || '❌' }} |
-
-                      ### Version 2 (experimental)
-
-                      | Version | URL | Status |
-                      | --- | --- | --- |
-                      | Vercel | [${{ needs.deploy-v2-vercel.outputs.deployment-url }}](${{ needs.deploy-v2-vercel.outputs.deployment-url }}) | ${{ needs.deploy-v2-vercel.result == 'success' && '✅' || '❌' }} |
-                      | Cloudflare | [${{ needs.deploy-v2-cloudflare.outputs.deployment-url }}](${{ needs.deploy-v2-cloudflare.outputs.deployment-url }}) | ${{ needs.deploy-v2-cloudflare.result == 'success' && '✅' || '❌' }} |
-
-                      ### Test content
-
-                      | Site | v1 | v2 |
-                      | --- | --- | --- |
-                      | GitBook | [${{ needs.deploy.outputs.deployment-url }}/docs.gitbook.com](${{ needs.deploy.outputs.deployment-url }}/docs.gitbook.com) | [${{ needs.deploy-v2-vercel.outputs.deployment-url }}/url/docs.gitbook.com](${{ needs.deploy-v2-vercel.outputs.deployment-url }}/url/docs.gitbook.com) |
-                      | E2E | [${{ needs.deploy.outputs.deployment-url }}/gitbook.gitbook.io/test-gitbook-open](${{ needs.deploy.outputs.deployment-url }}/gitbook.gitbook.io/test-gitbook-open) | [${{ needs.deploy-v2-vercel.outputs.deployment-url }}/url/gitbook.gitbook.io/test-gitbook-open](${{ needs.deploy-v2-vercel.outputs.deployment-url }}/url/gitbook.gitbook.io/test-gitbook-open) |
-                  edit-mode: replace
-    visual-testing:
-        runs-on: ubuntu-latest
-        name: Visual Testing
-        needs: deploy
-        timeout-minutes: 6
-        steps:
-            - name: Checkout
-              uses: actions/checkout@v4
-            - name: Setup Bun
-              uses: ./.github/composite/setup-bun
-            - name: Install dependencies
-              run: bun install --frozen-lockfile
-            - name: Setup Playwright
-              uses: ./.github/actions/setup-playwright
-            - name: Run Playwright tests
-              run: bun e2e
-              env:
-                  BASE_URL: ${{ needs.deploy.outputs.deployment-url }}
-                  ARGOS_TOKEN: ${{ secrets.ARGOS_TOKEN }}
-    visual-testing-v2:
-        runs-on: ubuntu-latest
-        name: Visual Testing v2
-        needs: deploy-v2-vercel
-        timeout-minutes: 6
-        steps:
-            - name: Checkout
-              uses: actions/checkout@v4
-            - name: Setup Bun
-              uses: ./.github/composite/setup-bun
-            - name: Install dependencies
-              run: bun install --frozen-lockfile
-            - name: Setup Playwright
-              uses: ./.github/actions/setup-playwright
-            - name: Run Playwright tests
-              run: bun e2e
-              env:
-                  BASE_URL: ${{ needs.deploy-v2-vercel.outputs.deployment-url }}/url/
-                  ARGOS_TOKEN: ${{ secrets.ARGOS_TOKEN }}
-                  ARGOS_BUILD_NAME: 'v2'
-    visual-testing-customers:
-        runs-on: ubuntu-latest
-        name: Visual Testing Customers
-        needs: deploy
-        timeout-minutes: 6
-        steps:
-            - name: Checkout
-              uses: actions/checkout@v4
-            - name: Setup Bun
-              uses: ./.github/composite/setup-bun
-            - name: Install dependencies
-              run: bun install --frozen-lockfile
-            - name: Setup Playwright
-              uses: ./.github/actions/setup-playwright
-            - name: Run Playwright tests
-              run: bun e2e-customers
-              env:
-                  BASE_URL: ${{ needs.deploy.outputs.deployment-url }}
-                  ARGOS_TOKEN: ${{ secrets.ARGOS_TOKEN }}
-                  ARGOS_BUILD_NAME: 'customers'
-    visual-testing-customers-v2:
-        runs-on: ubuntu-latest
-        name: Visual Testing Customers v2
-        needs: deploy-v2-vercel
-        timeout-minutes: 6
-        steps:
-            - name: Checkout
-              uses: actions/checkout@v4
-            - name: Setup Bun
-              uses: ./.github/composite/setup-bun
-            - name: Install dependencies
-              run: bun install --frozen-lockfile
-            - name: Setup Playwright
-              uses: ./.github/actions/setup-playwright
-            - name: Run Playwright tests
-              run: bun e2e-customers
-              env:
-                  BASE_URL: ${{ needs.deploy-v2-vercel.outputs.deployment-url }}/url/
-                  ARGOS_TOKEN: ${{ secrets.ARGOS_TOKEN }}
-                  ARGOS_BUILD_NAME: 'customers-v2'
-    pagespeed-testing:
-        runs-on: ubuntu-latest
-        name: PageSpeed Testing
-        needs: deploy
-        steps:
-            - name: Checkout
-              uses: actions/checkout@v4
-            - name: Setup Bun
-              uses: ./.github/composite/setup-bun
-            - name: Install dependencies
-              run: bun install --frozen-lockfile
-              env:
-                  PUPPETEER_SKIP_DOWNLOAD: 1
-            - name: Run pagespeed tests
-              run: bun ./packages/gitbook/tests/pagespeed-testing.ts $DEPLOYMENT_URL
-              env:
-                  DEPLOYMENT_URL: ${{needs.deploy.outputs.deployment-url}}
-                  PAGESPEED_API_KEY: ${{ secrets.PAGESPEED_API_KEY }}
     format:
         runs-on: ubuntu-latest
         name: Format

.github/workflows/deploy-preview.yaml

@@ -0,0 +1,298 @@
+name: Preview
+on:
+    pull_request:
+    push:
+      branches:
+        - main
+env:
+    NPM_TOKEN_READONLY: ${{ secrets.NPM_TOKEN_READONLY }}
+jobs:
+    deploy-v1-cloudflare:
+        name: Deploy v1 to Cloudflare Pages
+        runs-on: ubuntu-latest
+        environment:
+          name: ${{ github.ref == 'refs/heads/main' && '1c-production' || '1c-preview' }}
+          url: ${{ steps.deploy.outputs.deployment-url }}
+        permissions:
+            contents: read
+            deployments: write
+            issues: write
+            pull-requests: write
+            checks: write
+            statuses: write
+        outputs:
+            deployment-url: ${{ steps.deploy.outputs.deployment-url }}
+            deployment-alias-url: ${{ steps.deploy.outputs.deployment-alias-url }}
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+            - name: Setup Bun
+              uses: ./.github/composite/setup-bun
+            - name: Install dependencies
+              run: bun install --frozen-lockfile
+              env:
+                  PUPPETEER_SKIP_DOWNLOAD: 1
+            - name: Sets env vars for production
+              if: github.ref == 'refs/heads/main'
+              run: |
+                echo "GITBOOK_ASSETS_PREFIX=https://static.gitbook.com" >> $GITHUB_ENV
+            - name: Build Next.js with next-on-pages
+              run: bun run turbo gitbook#build:cloudflare
+              env:
+                  NEXT_SERVER_ACTIONS_ENCRYPTION_KEY: ${{ secrets.NEXT_SERVER_ACTIONS_ENCRYPTION_KEY }}
+                  GITBOOK_RUNTIME: cloudflare
+            - id: deploy
+              name: Deploy to Cloudflare
+              uses: cloudflare/wrangler-action@v3.14.0
+              with:
+                  apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+                  accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+                  workingDirectory: ./
+                  wranglerVersion: '3.112.0'
+                  command: pages deploy ./packages/gitbook/.vercel/output/static --project-name=${{ vars.CLOUDFLARE_PROJECT_NAME }} --branch=${{ github.ref == 'refs/heads/main' && 'main' || format('pr{0}', github.event.pull_request.number) }}
+            - name: Outputs
+              run: |
+                  echo "URL: ${{ steps.deploy.outputs.deployment-url }}"
+                  echo "Alias URL: ${{ steps.deploy.outputs.deployment-alias-url }}"
+    deploy-v2-vercel:
+        name: Deploy v2 to Vercel (preview)
+        runs-on: ubuntu-latest
+        environment:
+          name: 2v-preview
+          url: ${{ steps.deploy.outputs.deployment-url }}
+        outputs:
+            deployment-url: ${{ steps.deploy.outputs.deployment-url }}
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+            - name: Deploy to Vercel
+              id: deploy
+              uses: ./.github/composite/deploy-vercel
+              with:
+                  environment: preview
+                  vercelOrg: ${{ secrets.VERCEL_ORG_ID }}
+                  vercelProject: ${{ secrets.VERCEL_PROJECT_ID }}
+                  vercelToken: ${{ secrets.VERCEL_TOKEN }}
+                  opItem: op://gitbook-open/2v-preview
+                  opServiceAccount: ${{ secrets.OP_SERVICE_ACCOUNT_TOKEN }}
+    deploy-v2-cloudflare:
+        name: Deploy v2 to Cloudflare Worker (preview)
+        runs-on: ubuntu-latest
+        environment:
+          name: 2c-preview
+          url: ${{ steps.deploy.outputs.deployment-url }}
+        outputs:
+            deployment-url: ${{ steps.deploy.outputs.deployment-url || steps.extract-worker-id.outputs.worker-url }}
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+            - name: Deploy to Cloudflare
+              id: deploy
+              uses: ./.github/composite/deploy-cloudflare
+              with:
+                  environment: preview
+                  deploy: ${{ github.ref == 'refs/heads/main' }}
+                  apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+                  accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+                  opItem: op://gitbook-open/2c-preview
+                  opServiceAccount: ${{ secrets.OP_SERVICE_ACCOUNT_TOKEN }}
+                  commitTag: ${{ github.ref == 'refs/heads/main' && 'main' || format('pr{0}', github.event.pull_request.number) }}
+                  commitMessage: ${{ github.sha }}
+            - name: Extract Worker ID
+              id: extract-worker-id
+              if: ${{ !steps.deploy.outputs.deployment-url }}
+              run: |
+                if [[ "${{ steps.deploy.outputs.command-output }}" =~ Worker\ Version\ ID:\ ([0-9a-f]{8})-([0-9a-f-]+) ]]; then
+                  WORKER_ID_FIRST_PART="${BASH_REMATCH[1]}"
+                  echo "worker-url=https://${WORKER_ID_FIRST_PART}-gitbook-open-v2-preview.gitbook.workers.dev/" >> $GITHUB_OUTPUT
+                fi
+            - name: Outputs
+              run: |
+                  echo "URL: ${{ steps.deploy.outputs.deployment-url || steps.extract-worker-id.outputs.worker-url }}"
+    comment-deployments:
+        runs-on: ubuntu-latest
+        name: Comment Deployments (preview)
+        if: always() && !startsWith(github.ref, 'refs/heads/main')
+        needs:
+            - deploy-v1-cloudflare
+            - deploy-v2-vercel
+            - deploy-v2-cloudflare
+        steps:
+            - name: Find GitHub Comment
+              uses: peter-evans/find-comment@v3
+              id: fc
+              with:
+                  issue-number: ${{ github.event.pull_request.number }}
+                  comment-author: 'github-actions[bot]'
+                  body-includes: 'Summary of the deployments'
+
+            - name: Create or update GitHub comment
+              uses: peter-evans/create-or-update-comment@v4
+              with:
+                  comment-id: ${{ steps.fc.outputs.comment-id }}
+                  issue-number: ${{ github.event.pull_request.number }}
+                  body: |
+                      Summary of the deployments:
+
+                      ### Version 1
+
+                      | Version | URL | Status |
+                      | --- | --- | --- |
+                      | Latest commit | [${{ needs.deploy-v1-cloudflare.outputs.deployment-url }}](${{ needs.deploy-v1-cloudflare.outputs.deployment-url }}) | ${{ needs.deploy-v1-cloudflare.result == 'success' && '✅' || '❌' }} |
+                      | PR | [${{ needs.deploy-v1-cloudflare.outputs.deployment-alias-url }}](${{ needs.deploy-v1-cloudflare.outputs.deployment-alias-url }}) | ${{ needs.deploy-v1-cloudflare.result == 'success' && '✅' || '❌' }} |
+
+                      ### Version 2
+
+                      | Version | URL | Status |
+                      | --- | --- | --- |
+                      | Vercel | [${{ needs.deploy-v2-vercel.outputs.deployment-url }}](${{ needs.deploy-v2-vercel.outputs.deployment-url }}) | ${{ needs.deploy-v2-vercel.result == 'success' && '✅' || '❌' }} |
+                      | Cloudflare | [${{ needs.deploy-v2-cloudflare.outputs.deployment-url }}](${{ needs.deploy-v2-cloudflare.outputs.deployment-url }}) | ${{ needs.deploy-v2-cloudflare.result == 'success' && '✅' || '❌' }} |
+
+                      ### Test content
+
+                      | Site | `v1` | `2v` | `2c` |
+                      | --- | --- | --- | --- |
+                      | GitBook | [${{ needs.deploy-v1-cloudflare.outputs.deployment-url }}/gitbook.com/docs](${{ needs.deploy-v1-cloudflare.outputs.deployment-url }}/gitbook.com/docs) | [${{ needs.deploy-v2-vercel.outputs.deployment-url }}/url/gitbook.com/docs](${{ needs.deploy-v2-vercel.outputs.deployment-url }}/url/gitbook.com/docs) | [${{ needs.deploy-v2-cloudflare.outputs.deployment-url }}/url/gitbook.com/docs](${{ needs.deploy-v2-cloudflare.outputs.deployment-url }}/url/gitbook.com/docs) |
+                      | E2E | [${{ needs.deploy-v1-cloudflare.outputs.deployment-url }}/gitbook.gitbook.io/test-gitbook-open](${{ needs.deploy-v1-cloudflare.outputs.deployment-url }}/gitbook.gitbook.io/test-gitbook-open) | [${{ needs.deploy-v2-vercel.outputs.deployment-url }}/url/gitbook.gitbook.io/test-gitbook-open](${{ needs.deploy-v2-vercel.outputs.deployment-url }}/url/gitbook.gitbook.io/test-gitbook-open) | [${{ needs.deploy-v2-cloudflare.outputs.deployment-url }}/url/gitbook.gitbook.io/test-gitbook-open](${{ needs.deploy-v2-cloudflare.outputs.deployment-url }}/url/gitbook.gitbook.io/test-gitbook-open) |
+                  edit-mode: replace
+    visual-testing-v1:
+        runs-on: ubuntu-latest
+        name: Visual Testing v1
+        needs: deploy-v1-cloudflare
+        timeout-minutes: 8
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+            - name: Setup Bun
+              uses: ./.github/composite/setup-bun
+            - name: Install dependencies
+              run: bun install --frozen-lockfile
+            - name: Setup Playwright
+              uses: ./.github/actions/setup-playwright
+            - name: Run Playwright tests
+              run: bun e2e
+              env:
+                  BASE_URL: ${{ needs.deploy-v1-cloudflare.outputs.deployment-url }}
+                  ARGOS_TOKEN: ${{ secrets.ARGOS_TOKEN }}
+    visual-testing-v2-vercel:
+        runs-on: ubuntu-latest
+        name: Visual Testing v2
+        needs: deploy-v2-vercel
+        timeout-minutes: 10
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+            - name: Setup Bun
+              uses: ./.github/composite/setup-bun
+            - name: Install dependencies
+              run: bun install --frozen-lockfile
+            - name: Setup Playwright
+              uses: ./.github/actions/setup-playwright
+            - name: Run Playwright tests
+              run: bun e2e
+              env:
+                  BASE_URL: ${{ needs.deploy-v2-vercel.outputs.deployment-url }}
+                  SITE_BASE_URL: ${{ needs.deploy-v2-vercel.outputs.deployment-url }}/url/
+                  ARGOS_TOKEN: ${{ secrets.ARGOS_TOKEN }}
+                  ARGOS_BUILD_NAME: 'v2-vercel'
+    visual-testing-v2-cloudflare:
+        runs-on: ubuntu-latest
+        name: Visual Testing v2 (Cloudflare)
+        needs: deploy-v2-cloudflare
+        timeout-minutes: 10
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+            - name: Setup Bun
+              uses: ./.github/composite/setup-bun
+            - name: Install dependencies
+              run: bun install --frozen-lockfile
+            - name: Setup Playwright
+              uses: ./.github/actions/setup-playwright
+            - name: Run Playwright tests
+              run: bun e2e
+              env:
+                  BASE_URL: ${{ needs.deploy-v2-cloudflare.outputs.deployment-url }}
+                  SITE_BASE_URL: ${{ needs.deploy-v2-cloudflare.outputs.deployment-url }}/url/
+                  ARGOS_TOKEN: ${{ secrets.ARGOS_TOKEN }}
+                  ARGOS_BUILD_NAME: 'v2-cloudflare'
+    visual-testing-customers-v1:
+        runs-on: ubuntu-latest
+        name: Visual Testing Customers v1
+        needs: deploy-v1-cloudflare
+        timeout-minutes: 8
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+            - name: Setup Bun
+              uses: ./.github/composite/setup-bun
+            - name: Install dependencies
+              run: bun install --frozen-lockfile
+            - name: Setup Playwright
+              uses: ./.github/actions/setup-playwright
+            - name: Run Playwright tests
+              run: bun e2e-customers
+              env:
+                  BASE_URL: ${{ needs.deploy-v1-cloudflare.outputs.deployment-url }}
+                  ARGOS_TOKEN: ${{ secrets.ARGOS_TOKEN }}
+                  ARGOS_BUILD_NAME: 'customers-v1'
+    visual-testing-customers-v2:
+        runs-on: ubuntu-latest
+        name: Visual Testing Customers v2
+        needs: deploy-v2-vercel
+        timeout-minutes: 8
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+            - name: Setup Bun
+              uses: ./.github/composite/setup-bun
+            - name: Install dependencies
+              run: bun install --frozen-lockfile
+            - name: Setup Playwright
+              uses: ./.github/actions/setup-playwright
+            - name: Run Playwright tests
+              run: bun e2e-customers
+              env:
+                  BASE_URL: ${{ needs.deploy-v2-vercel.outputs.deployment-url }}
+                  SITE_BASE_URL: ${{ needs.deploy-v2-vercel.outputs.deployment-url }}/url/
+                  ARGOS_TOKEN: ${{ secrets.ARGOS_TOKEN }}
+                  ARGOS_BUILD_NAME: 'customers-v2'
+    visual-testing-customers-v2-cloudflare:
+        runs-on: ubuntu-latest
+        name: Visual Testing Customers v2 (Cloudflare)
+        needs: deploy-v2-cloudflare
+        timeout-minutes: 8
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+            - name: Setup Bun
+              uses: ./.github/composite/setup-bun
+            - name: Install dependencies
+              run: bun install --frozen-lockfile
+            - name: Setup Playwright
+              uses: ./.github/actions/setup-playwright
+            - name: Run Playwright tests
+              run: bun e2e-customers
+              env:
+                  BASE_URL: ${{ needs.deploy-v2-cloudflare.outputs.deployment-url }}
+                  SITE_BASE_URL: ${{ needs.deploy-v2-cloudflare.outputs.deployment-url }}/url/
+                  ARGOS_TOKEN: ${{ secrets.ARGOS_TOKEN }}
+                  ARGOS_BUILD_NAME: 'customers-v2'
+    pagespeed-testing-v1:
+        runs-on: ubuntu-latest
+        name: PageSpeed Testing v1
+        needs: deploy-v1-cloudflare
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+            - name: Setup Bun
+              uses: ./.github/composite/setup-bun
+            - name: Install dependencies
+              run: bun install --frozen-lockfile
+              env:
+                  PUPPETEER_SKIP_DOWNLOAD: 1
+            - name: Run pagespeed tests
+              run: bun ./packages/gitbook/tests/pagespeed-testing.ts
+              env:
+                  BASE_URL: ${{needs.deploy-v1-cloudflare.outputs.deployment-url}}
+                  PAGESPEED_API_KEY: ${{ secrets.PAGESPEED_API_KEY }}

.github/workflows/deploy-production.yaml

@@ -0,0 +1,55 @@
+name: Production
+on:
+    push:
+        branches:
+            - main
+env:
+    NPM_TOKEN_READONLY: ${{ secrets.NPM_TOKEN_READONLY }}
+jobs:
+    deploy-v2-vercel:
+        name: Deploy v2 to Vercel (production)
+        runs-on: ubuntu-latest
+        environment: 
+            name: 2v-production
+            url: ${{ steps.deploy.outputs.deployment-url }}
+        outputs:
+            deployment-url: ${{ steps.deploy.outputs.deployment-url }}
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+            - name: Deploy
+              id: deploy
+              uses: ./.github/composite/deploy-vercel
+              with:
+                environment: production
+                vercelOrg: ${{ secrets.VERCEL_ORG_ID }}
+                vercelProject: ${{ secrets.VERCEL_PROJECT_ID }}
+                vercelToken: ${{ secrets.VERCEL_TOKEN }}
+                opItem: op://gitbook-open/2v-production
+                opServiceAccount: ${{ secrets.OP_SERVICE_ACCOUNT_TOKEN }}
+    deploy-v2-cloudflare:
+        name: Deploy v2 to Cloudflare Worker (production)
+        runs-on: ubuntu-latest
+        environment: 
+            name: 2c-production
+            url: ${{ steps.deploy.outputs.deployment-url }}
+        outputs:
+            deployment-url: ${{ steps.deploy.outputs.deployment-url }}
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+            - name: Deploy
+              id: deploy
+              uses: ./.github/composite/deploy-cloudflare
+              with:
+                  environment: production
+                  deploy: true
+                  apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+                  accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+                  opItem: op://gitbook-open/2c-production
+                  opServiceAccount: ${{ secrets.OP_SERVICE_ACCOUNT_TOKEN }}
+                  commitTag: main
+                  commitMessage: ${{ github.sha }}
+            - name: Outputs
+              run: |
+                  echo "URL: ${{ steps.deploy.outputs.deployment-url }}"

.github/workflows/deploy-staging.yaml

@@ -0,0 +1,55 @@
+name: Staging
+on:
+    push:
+        branches:
+            - main
+env:
+    NPM_TOKEN_READONLY: ${{ secrets.NPM_TOKEN_READONLY }}
+jobs:
+    deploy-v2-vercel:
+        name: Deploy v2 to Vercel (staging)
+        runs-on: ubuntu-latest
+        environment: 
+            name: 2v-staging
+            url: ${{ steps.deploy.outputs.deployment-url }}
+        outputs:
+            deployment-url: ${{ steps.deploy.outputs.deployment-url }}
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+            - name: Deploy
+              id: deploy
+              uses: ./.github/composite/deploy-vercel
+              with:
+                environment: staging
+                vercelOrg: ${{ secrets.VERCEL_ORG_ID }}
+                vercelProject: ${{ secrets.VERCEL_PROJECT_ID }}
+                vercelToken: ${{ secrets.VERCEL_TOKEN }}
+                opItem: op://gitbook-open/2v-staging
+                opServiceAccount: ${{ secrets.OP_SERVICE_ACCOUNT_TOKEN }}
+    deploy-v2-cloudflare:
+        name: Deploy v2 to Cloudflare Worker (staging)
+        runs-on: ubuntu-latest
+        environment: 
+            name: 2c-staging
+            url: ${{ steps.deploy.outputs.deployment-url }}
+        outputs:
+            deployment-url: ${{ steps.deploy.outputs.deployment-url }}
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+            - name: Deploy
+              id: deploy
+              uses: ./.github/composite/deploy-cloudflare
+              with:
+                  environment: staging
+                  deploy: true
+                  apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+                  accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+                  opItem: op://gitbook-open/2c-staging
+                  opServiceAccount: ${{ secrets.OP_SERVICE_ACCOUNT_TOKEN }}
+                  commitTag: main
+                  commitMessage: ${{ github.sha }}
+            - name: Outputs
+              run: |
+                  echo "URL: ${{ steps.deploy.outputs.deployment-url }}"

.github/workflows/publish.yaml

@@ -5,6 +5,9 @@ on:
         branches:
             - main
 
+env:
+    NPM_TOKEN_READONLY: ${{ secrets.NPM_TOKEN_READONLY }}
+    
 concurrency: ${{ github.workflow }}-${{ github.ref }}
 
 jobs:

.prettierignore

@@ -1,17 +0,0 @@
-.next
-.vercel
-.open-next
-
-# Generated
-packages/emoji-codepoints/index.ts
-packages/gitbook/public/~gitbook/static/
-packages/icons/src/data/*.json
-
-# Build files
-dist/
-
-README.md
-CHANGELOG.md
-
-# v2
-packages/gitbook-v2/public/~gitbook/static/

.prettierrc.json

@@ -1,5 +0,0 @@
-{
-    "printWidth": 100,
-    "singleQuote": true,
-    "tabWidth": 4
-}

.vscode/settings.json

@@ -9,8 +9,13 @@
     ],
     "tailwindCSS.classAttributes": ["class", "className", "style", ".*Style"],
     "prettier.enable": false,
+    "editor.formatOnSave": true,
     "editor.defaultFormatter": "biomejs.biome",
     "editor.codeActionsOnSave": {
-        "source.organizeImports": "explicit"
+        "source.organizeImports.biome": "explicit",
+        "source.fixAll.biome": "explicit"
+    },
+    "[typescript]": {
+        "editor.defaultFormatter": "biomejs.biome"
     }
 }

README.md

@@ -1,7 +1,7 @@
 <h1 align="center">GitBook</h1>
 
 <p align="center">
-  <a href="https://docs.gitbook.com/">Docs</a> - <a href="https://github.com/GitbookIO/community">Community</a> - <a href="https://developer.gitbook.com/">Developer Docs</a> - <a href="https://changelog.gitbook.com/">Changelog</a> - <a href="https://github.com/GitbookIO/gitbook/issues/new?assignees=&labels=bug&template=bug_report.md">Bug reports</a> 
+  <a href="https://gitbook.com/docs/">Docs</a> - <a href="https://github.com/GitbookIO/community">Community</a> - <a href="https://developer.gitbook.com/">Developer Docs</a> - <a href="https://changelog.gitbook.com/">Changelog</a> - <a href="https://github.com/GitbookIO/gitbook/issues/new?assignees=&labels=bug&template=bug_report.md">Bug reports</a> 
 </p>
 
 <p align="center">
@@ -59,15 +59,15 @@ bun install
 4. Start your local development server.
 
 ```
-bun dev
+bun dev:v2
 ```
 
 5. Open a published GitBook space in your web browser, prefixing it with `http://localhost:3000/`.
 
 examples:
 
--   http://localhost:3000/docs.gitbook.com
--   http://localhost:3000/open-source.gitbook.io/midjourney
+-   http://localhost:3000/url/gitbook.com/docs
+-   http://localhost:3000/url/open-source.gitbook.io/midjourney
 
 Any published GitBook site can be accessed through your local development instance, and any updates you make to the codebase will be reflected in your browser.
 

biome.json

@@ -18,7 +18,10 @@
             "**/.vercel/**/*",
             "**/.cache/**/*",
             "**/.wrangler/**/*",
-            "packages/openapi-parser/src/fixtures/**/*"
+            "packages/openapi-parser/src/fixtures/**/*",
+            "packages/emoji-codepoints/index.ts",
+            "packages/icons/src/data/*.json",
+            "packages/cache-do/worker-configuration.d.ts"
         ]
     },
     "formatter": {
@@ -67,7 +70,12 @@
                 "useThrowOnlyError": "error"
             },
             "suspicious": {
-                "noConsole": "warn",
+                "noConsole": {
+                    "level": "warn",
+                    "options": {
+                        "allow": ["assert", "error", "warn"]
+                    }
+                },
                 "noExplicitAny": "warn",
                 "noImplicitAnyLet": "warn",
                 "noConfusingVoidType": "warn",

package.json

@@ -4,14 +4,15 @@
     "devDependencies": {
         "@biomejs/biome": "^1.9.4",
         "@changesets/cli": "^2.27.12",
-        "turbo": "^2.4.4",
+        "turbo": "^2.5.0",
         "vercel": "^39.3.0"
     },
-    "packageManager": "bun@1.2.4",
+    "packageManager": "bun@1.2.11",
     "overrides": {
         "@codemirror/state": "6.4.1",
-        "react": "18.3.1",
-        "react-dom": "18.3.1"
+        "@gitbook/api": "^0.115.0",
+        "react": "^19.0.0",
+        "react-dom": "^19.0.0"
     },
     "private": true,
     "scripts": {

packages/cache-do/package.json

@@ -21,10 +21,10 @@
     },
     "devDependencies": {
         "typescript": "^5.5.3",
-        "wrangler": "^3.109.2"
+        "wrangler": "^4.10.0"
     },
     "scripts": {
-        "generate": "wrangler types --experimental-include-runtime",
+        "generate": "wrangler types",
         "build": "tsc",
         "typecheck": "tsc --noEmit",
         "dev": "tsc -w",

packages/cache-do/tsconfig.json

@@ -14,7 +14,7 @@
         "resolveJsonModule": true,
         "isolatedModules": true,
         "incremental": true,
-        "types": ["./.wrangler/types/runtime.d.ts"]
+        "types": ["./worker-configuration.d.ts"]
     },
     "include": ["src/**/*.ts"],
     "exclude": ["node_modules"]

packages/cache-do/turbo.json

@@ -0,0 +1,8 @@
+{
+    "extends": ["//"],
+    "tasks": {
+        "generate": {
+            "outputs": ["worker-configuration.d.ts"]
+        }
+    }
+}

packages/cache-tags/CHANGELOG.md

@@ -0,0 +1,25 @@
+# @gitbook/cache-tags
+
+## 0.3.1
+
+### Patch Changes
+
+- 77397ca: Fix version of @gitbook/api referenced in package.json
+
+## 0.3.0
+
+### Minor Changes
+
+- 116575c: Improve typing of getComputedContentSourceCacheTags to match latest API specification
+
+## 0.2.0
+
+### Minor Changes
+
+- f32bf1f: Export function `getCacheTagForURL` to easily get the cache tag for a URL.
+
+## 0.1.0
+
+### Minor Changes
+
+- 05ffd0e: Initial version of the package

packages/cache-tags/README.md

@@ -0,0 +1,3 @@
+# `@gitbook/cache-tags`
+
+Utility to generate cache tags for GitBook Open.

packages/cache-tags/package.json

@@ -1,7 +1,6 @@
 {
-    "name": "@gitbook/proxy",
-    "description": "Host a GitBook site on your own domain as a subpath",
-    "version": "0.1.0",
+    "name": "@gitbook/cache-tags",
+    "type": "module",
     "exports": {
         ".": {
             "types": "./dist/index.d.ts",
@@ -9,15 +8,18 @@
             "default": "./dist/index.js"
         }
     },
-    "dependencies": {},
+    "version": "0.3.1",
+    "dependencies": {
+        "@gitbook/api": "^0.115.0",
+        "assert-never": "^1.2.1"
+    },
     "devDependencies": {
         "typescript": "^5.5.3"
     },
     "scripts": {
         "build": "tsc",
         "typecheck": "tsc --noEmit",
-        "clean": "rm -rf ./dist",
-        "unit": "bun test"
+        "dev": "tsc -w"
     },
     "files": ["dist", "src", "README.md", "CHANGELOG.md"]
 }

packages/cache-tags/src/index.ts

@@ -0,0 +1,209 @@
+import type { ComputedContentSource } from '@gitbook/api';
+import assertNever from 'assert-never';
+
+/**
+ * Get a stringified cache tag for a given object.
+ */
+export function getCacheTag(
+    spec: /**
+     * All data related to a user
+     * @deprecated - in v2, no tag as this is an immutable data
+     */
+        | {
+              tag: 'user';
+              user: string;
+          }
+        /**
+         * All data related to a space
+         */
+        | {
+              tag: 'space';
+              space: string;
+          }
+        /**
+         * All data related to an integration.
+         */
+        | {
+              tag: 'integration';
+              integration: string;
+          }
+        /**
+         * All data related to a change request
+         */
+        | {
+              tag: 'change-request';
+              space: string;
+              changeRequest: string;
+          }
+        /**
+         * Immutable data related to a revision
+         * @deprecated - in v2, no tag as this is an immutable data
+         */
+        | {
+              tag: 'revision';
+              space: string;
+              revision: string;
+          }
+        /**
+         * Immutable data related to a document
+         * @deprecated - in v2, no tag as this is an immutable data
+         */
+        | {
+              tag: 'document';
+              space: string;
+              document: string;
+          }
+        /**
+         * Immutable data related to a computed document
+         * @deprecated - in v2, no tag as this is an immutable data
+         */
+        | {
+              tag: 'computed-document';
+              space: string;
+              sourceType: string;
+          }
+        /**
+         * All data related to the URL of a content
+         */
+        | {
+              tag: 'url';
+              hostname: string;
+          }
+        /**
+         * All data related to a site
+         */
+        | {
+              tag: 'site';
+              site: string;
+          }
+        /**
+         * All data related to an OpenAPI spec
+         */
+        | {
+              tag: 'openapi';
+              organization: string;
+              openAPISpec: string;
+          }
+        /**
+         * All data related to a translation
+         */
+        | {
+              tag: 'translation';
+              organization: string;
+              translationSettings: string;
+          }
+): string {
+    switch (spec.tag) {
+        case 'user':
+            return `user:${spec.user}`;
+        case 'url':
+            return `url:${spec.hostname}`;
+        case 'space':
+            return `space:${spec.space}`;
+        case 'change-request':
+            return `space:${spec.space}:change-request:${spec.changeRequest}`;
+        case 'revision':
+            return `space:${spec.space}:revision:${spec.revision}`;
+        case 'document':
+            return `space:${spec.space}:document:${spec.document}`;
+        case 'computed-document':
+            return `space:${spec.space}:computed-document:${spec.sourceType}`;
+        case 'site':
+            return `site:${spec.site}`;
+        case 'integration':
+            return `integration:${spec.integration}`;
+        case 'openapi':
+            return `organization:${spec.organization}:openapi:${spec.openAPISpec}`;
+        case 'translation':
+            return `organization:${spec.organization}:translation:${spec.translationSettings}`;
+        default:
+            assertNever(spec);
+    }
+}
+
+/**
+ * Get the cache tag for a given URL.
+ */
+export function getCacheTagForURL(url: string | URL) {
+    const parsedURL = url instanceof URL ? url : new URL(url);
+    return getCacheTag({
+        tag: 'url',
+        hostname: parsedURL.hostname,
+    });
+}
+
+/**
+ * Get the tags for a computed content source.
+ */
+export function getComputedContentSourceCacheTags(
+    inContext: {
+        spaceId: string;
+        organizationId: string;
+    },
+    source: ComputedContentSource
+) {
+    const tags: string[] = [];
+
+    // We add the dependencies as tags, to ensure that the computed content is invalidated
+    // when the dependencies are updated.
+    const dependencies = Object.values(source.dependencies ?? {});
+    if (dependencies.length > 0) {
+        dependencies.forEach((dependency) => {
+            switch (dependency.ref.kind) {
+                case 'space':
+                    tags.push(
+                        getCacheTag({
+                            tag: 'space',
+                            space: dependency.ref.space,
+                        })
+                    );
+                    break;
+                case 'openapi':
+                    tags.push(
+                        getCacheTag({
+                            tag: 'openapi',
+                            organization: inContext.organizationId,
+                            openAPISpec: dependency.ref.spec,
+                        })
+                    );
+                    break;
+                case 'translation-language':
+                    tags.push(
+                        getCacheTag({
+                            tag: 'translation',
+                            organization: inContext.organizationId,
+                            translationSettings: dependency.ref.translationSettings,
+                        })
+                    );
+                    break;
+                default:
+                    // Do not throw for unknown dependency types
+                    // as it might mean we are lacking behind the API version
+                    break;
+            }
+        });
+    } else {
+        // Push a dummy tag, as the v1 is only using the first tag
+        tags.push(
+            getCacheTag({
+                tag: 'computed-document',
+                space: inContext.spaceId,
+                sourceType: source.type,
+            })
+        );
+    }
+
+    // We invalidate the computed content when a new version of the integration is deployed.
+
+    if (source.type.startsWith('integration:')) {
+        const integration = source.type.split(':')[1];
+        tags.push(
+            getCacheTag({
+                tag: 'integration',
+                integration,
+            })
+        );
+    }
+
+    return tags;
+}

packages/cache-tags/tsconfig.json

@@ -13,11 +13,12 @@
         "moduleResolution": "bundler",
         "resolveJsonModule": true,
         "isolatedModules": true,
+        "jsx": "react-jsx",
         "incremental": true,
         "types": [
             "bun-types" // add Bun global
         ]
     },
-    "include": ["src/**/*.ts"],
+    "include": ["src/**/*.ts", "src/**/*.tsx"],
     "exclude": ["node_modules"]
 }

packages/colors/CHANGELOG.md

@@ -1,7 +1,33 @@
 # @gitbook/colors
 
+## 0.3.3
+
+### Patch Changes
+
+- c3f6b8c: Update chroma ratio per step
+- 5e975ab: Fix code highlighting for HTTP
+- f7a3470: Change lightness check for color step 9 to allow input colors with a higher-than-needed contrast
+
+## 0.3.2
+
+### Patch Changes
+
+- cdffd7c: Desaturate text colors by decreasing chroma for the last steps of the color scale
+
+## 0.3.1
+
+### Patch Changes
+
+- fb90eb0: Reduce chroma of first color scale step
+
+## 0.3.0
+
+### Minor Changes
+
+- 4f0a772: Override tint lightness if supplied color is out of bounds
+
 ## 0.2.0
 
 ### Minor Changes
 
--   445baaa: Initial release
+- 445baaa: Initial release

packages/colors/package.json

@@ -8,7 +8,7 @@
             "default": "./dist/index.js"
         }
     },
-    "version": "0.2.0",
+    "version": "0.3.3",
     "devDependencies": {
         "typescript": "^5.5.3"
     },

packages/colors/src/transformations.ts

@@ -184,6 +184,7 @@ export function colorScale(
     const mixColor = mix?.color ? rgbToOklch(hexToRgbArray(mix.color)) : null;
     const foregroundColor = rgbToOklch(hexToRgbArray(foreground));
     const backgroundColor = rgbToOklch(hexToRgbArray(background));
+    let mapping = darkMode ? colorMixMapping.dark : colorMixMapping.light;
 
     if (mixColor && mix?.ratio && mix.ratio > 0) {
         // If defined, we mix in a (tiny) bit of the mix color with the base color.
@@ -192,7 +193,20 @@ export function colorScale(
         baseColor.H = mix.color === DEFAULT_TINT_COLOR ? baseColor.H : mixColor.H;
     }
 
-    const mapping = darkMode ? colorMixMapping.dark : colorMixMapping.light;
+    if (
+        (darkMode && baseColor.L < backgroundColor.L) ||
+        (!darkMode && baseColor.L > backgroundColor.L)
+    ) {
+        // If the supplied color is outside of our lightness bounds, use the supplied color's lightness.
+        // This is mostly used to allow darker-than-dark backgrounds for brands that specifically want that look.
+        const difference = (backgroundColor.L - baseColor.L) / backgroundColor.L;
+        backgroundColor.L = baseColor.L;
+        // At the edges of the scale, the subtle lightness changes stop being perceptible. We need to amp up our mapping to still stand out.
+        const amplifier = 1;
+        mapping = mapping.map((step, index) =>
+            index < 9 ? step + step * amplifier * difference : step
+        );
+    }
 
     const result = [];
 
@@ -200,13 +214,31 @@ export function colorScale(
         const targetL =
             foregroundColor.L * mapping[index] + backgroundColor.L * (1 - mapping[index]);
 
-        if (index === 8 && !mix && Math.abs(baseColor.L - targetL) < 0.2) {
+        if (
+            index === 8 &&
+            !mix &&
+            (darkMode ? targetL - baseColor.L < 0.2 : baseColor.L - targetL < 0.2)
+        ) {
             // Original colour is close enough to target, so let's use the original colour as step 9.
             result.push(hex);
             continue;
         }
 
-        const chromaRatio = index < 8 ? (index + 1) * 0.05 : 1;
+        const chromaRatio = (() => {
+            switch (index) {
+                // Step 9 and 10 have max chroma, meaning they are fully saturated.
+                case 8:
+                case 9:
+                    return 1;
+                // Step 11 and 12 have a reduced chroma
+                case 10:
+                    return 0.4;
+                case 11:
+                    return 0.1;
+                default:
+                    return index * 0.05;
+            }
+        })();
 
         const shade = {
             L: targetL, // Blend lightness

packages/gitbook-v2/.gitignore

@@ -6,6 +6,7 @@
 
 # cloudflare
 .open-next
+.wrangler
 
 # Symbolic links
 public

packages/gitbook-v2/CHANGELOG.md

@@ -1,13 +1,81 @@
 # gitbook-v2
 
+## 0.3.0
+
+### Minor Changes
+
+- 3119066: Add support for reusable content across spaces.
+- 7d7806d: Pass SVG images through image resizing without resizing them to serve them from optimal host.
+
+### Patch Changes
+
+- 1c8d9fe: keep data cache in OpenNext between deployment
+- 778624a: Only resize images with supported extensions.
+- e6ddc0f: Fix URL in sitemap
+- 5e975ab: Fix code highlighting for HTTP
+- e15757d: Fix crash on Cloudflare by using latest stable version of Next.js instead of canary
+- 634e0b4: Improve error messages around undefined site sections.
+- 97b7c79: Increase logging around caching behaviour causing page crashes.
+- 3f29206: Update the regex for validating site redirect
+- dd043df: Revert investigation work around URL caches.
+
+## 0.2.5
+
+### Patch Changes
+
+- Updated dependencies [77397ca]
+  - @gitbook/cache-tags@0.3.1
+
+## 0.2.4
+
+### Patch Changes
+
+- 4234289: Fix incoming URL for requests that were proxied
+- Updated dependencies [116575c]
+  - @gitbook/cache-tags@0.3.0
+
+## 0.2.3
+
+### Patch Changes
+
+- 5b2bf82: Use stable site URL data for route rewrite in the middleware
+
+## 0.2.2
+
+### Patch Changes
+
+- 54ee014: Add initial support for loading custom fonts
+- bba2e52: Fix site redirects when it includes a section/variant path
+
+## 0.2.1
+
+### Patch Changes
+
+- Updated dependencies [f32bf1f]
+  - @gitbook/cache-tags@0.2.0
+
+## 0.2.0
+
+### Minor Changes
+
+- 76c7974: Add route to revalidate cached data
+
+## 0.1.2
+
+### Patch Changes
+
+- 05ffd0e: Improving data cache management for computed content
+- Updated dependencies [05ffd0e]
+  - @gitbook/cache-tags@0.1.0
+
 ## 0.1.1
 
 ### Patch Changes
 
--   3e11678: fix: lost section groups
+- 3e11678: fix: lost section groups
 
 ## 0.1.0
 
 ### Minor Changes
 
--   cfccc44: Setup structure and deployment for new version
+- cfccc44: Setup structure and deployment for new version

packages/gitbook-v2/next.config.mjs

@@ -5,15 +5,37 @@
  */
 const nextConfig = {
     experimental: {
+        // This is needed to throw "forbidden" when the api token expired during revalidation
+        authInterrupts: true,
         useCache: true,
+
+        // Content is fully static, we can cache it in the session memory cache for a long time
+        staleTimes: {
+            dynamic: 3600, // 1 hour
+            static: 3600, // 1 hour
+        },
     },
 
     env: {
         BUILD_VERSION: (process.env.GITHUB_SHA ?? '').slice(0, 7),
-        GITBOOK_URL: process.env.GITBOOK_URL,
-        GITBOOK_ASSETS_PREFIX: process.env.GITBOOK_ASSETS_PREFIX,
+
+        // GitBook envs
+        GITBOOK_API_URL: process.env.GITBOOK_API_URL,
+        GITBOOK_APP_URL: process.env.GITBOOK_APP_URL,
+        GITBOOK_INTEGRATIONS_HOST: process.env.GITBOOK_INTEGRATIONS_HOST,
+        GITBOOK_IMAGE_RESIZE_URL: process.env.GITBOOK_IMAGE_RESIZE_URL,
         GITBOOK_ICONS_URL: process.env.GITBOOK_ICONS_URL,
         GITBOOK_ICONS_TOKEN: process.env.GITBOOK_ICONS_TOKEN,
+        GITBOOK_URL: process.env.GITBOOK_URL,
+        GITBOOK_API_TOKEN: process.env.GITBOOK_API_TOKEN,
+        GITBOOK_ASSETS_PREFIX: process.env.GITBOOK_ASSETS_PREFIX,
+        GITBOOK_SECRET: process.env.GITBOOK_SECRET,
+        GITBOOK_IMAGE_RESIZE_SIGNING_KEY: process.env.GITBOOK_IMAGE_RESIZE_SIGNING_KEY,
+        GITBOOK_IMAGE_RESIZE_MODE: process.env.GITBOOK_IMAGE_RESIZE_MODE,
+        GITBOOK_FONTS_URL: process.env.GITBOOK_FONTS_URL,
+        GITBOOK_RUNTIME: process.env.GITBOOK_RUNTIME,
+
+        // Next.js envs
         NEXT_SERVER_ACTIONS_ENCRYPTION_KEY: process.env.NEXT_SERVER_ACTIONS_ENCRYPTION_KEY,
 
         // Used to detect if the app is running in V2 mode
@@ -31,6 +53,24 @@ const nextConfig = {
             },
         ],
     },
+
+    async headers() {
+        return [
+            {
+                source: '/~gitbook/static/:path*',
+                headers: [
+                    {
+                        key: 'Cache-Control',
+                        value: 'public, max-age=31536000, immutable',
+                    },
+                    {
+                        key: 'Access-Control-Allow-Origin',
+                        value: '*',
+                    },
+                ],
+            },
+        ];
+    },
 };
 
 export default nextConfig;

packages/gitbook-v2/open-next.config.ts

@@ -1,30 +1,27 @@
-// default open-next.config.ts file created by @opennextjs/cloudflare
+import { defineCloudflareConfig } from '@opennextjs/cloudflare';
+import doQueue from '@opennextjs/cloudflare/overrides/queue/do-queue';
+import doShardedTagCache from '@opennextjs/cloudflare/overrides/tag-cache/do-sharded-tag-cache';
+import {
+    softTagFilter,
+    withFilter,
+} from '@opennextjs/cloudflare/overrides/tag-cache/tag-cache-filter';
 
-import cache from '@opennextjs/cloudflare/kvCache';
+export default defineCloudflareConfig({
+    incrementalCache: () => import('./openNext/incrementalCache').then((m) => m.default),
+    tagCache: withFilter({
+        tagCache: doShardedTagCache({
+            baseShardSize: 12,
+            regionalCache: true,
+            shardReplication: {
+                numberOfSoftReplicas: 2,
+                numberOfHardReplicas: 1,
+            },
+        }),
+        // We don't use `revalidatePath`, so we filter out soft tags
+        filterFn: softTagFilter,
+    }),
+    queue: doQueue,
 
-const config = {
-    default: {
-        override: {
-            wrapper: 'cloudflare-node',
-            converter: 'edge',
-            incrementalCache: async () => cache,
-            tagCache: 'dummy',
-            queue: 'dummy',
-        },
-    },
-
-    middleware: {
-        external: true,
-        override: {
-            wrapper: 'cloudflare-edge',
-            converter: 'edge',
-            proxyExternalRequest: 'fetch',
-        },
-    },
-
-    dangerous: {
-        enableCacheInterception: false,
-    },
-};
-
-export default config;
+    // Performance improvements as we don't use PPR
+    enableCacheInterception: true,
+});

packages/gitbook-v2/openNext/incrementalCache.ts

@@ -0,0 +1,186 @@
+import { createHash } from 'node:crypto';
+
+import { trace } from '@/lib/tracing';
+import type {
+    CacheEntryType,
+    CacheValue,
+    IncrementalCache,
+    WithLastModified,
+} from '@opennextjs/aws/types/overrides.js';
+import { getCloudflareContext } from '@opennextjs/cloudflare';
+
+export const BINDING_NAME = 'NEXT_INC_CACHE_R2_BUCKET';
+export const DEFAULT_PREFIX = 'incremental-cache';
+
+export type KeyOptions = {
+    cacheType?: CacheEntryType;
+};
+
+/**
+ *
+ * It is very similar to the `R2IncrementalCache` in the `@opennextjs/cloudflare` package, but it allow us to trace
+ * the cache operations. It also integrates both R2 and Cache API in a single class.
+ * Having our own, will allow us to customize it in the future if needed.
+ */
+class GitbookIncrementalCache implements IncrementalCache {
+    name = 'GitbookIncrementalCache';
+
+    protected localCache: Cache | undefined;
+
+    async get<CacheType extends CacheEntryType = 'cache'>(
+        key: string,
+        cacheType?: CacheType
+    ): Promise<WithLastModified<CacheValue<CacheType>> | null> {
+        const cacheKey = this.getR2Key(key, cacheType);
+        return trace(
+            {
+                operation: 'openNextIncrementalCacheGet',
+                name: cacheKey,
+            },
+            async (span) => {
+                span.setAttribute('cacheType', cacheType ?? 'cache');
+                const r2 = getCloudflareContext().env[BINDING_NAME];
+                const localCache = await this.getCacheInstance();
+                if (!r2) throw new Error('No R2 bucket');
+                try {
+                    // Check local cache first if available
+                    const localCacheEntry = await localCache.match(this.getCacheUrlKey(cacheKey));
+                    if (localCacheEntry) {
+                        span.setAttribute('cacheHit', 'local');
+                        return localCacheEntry.json();
+                    }
+
+                    const r2Object = await r2.get(cacheKey);
+                    if (!r2Object) return null;
+
+                    span.setAttribute('cacheHit', 'r2');
+                    return {
+                        value: await r2Object.json(),
+                        lastModified: r2Object.uploaded.getTime(),
+                    };
+                } catch (e) {
+                    console.error('Failed to get from cache', e);
+                    return null;
+                }
+            }
+        );
+    }
+
+    async set<CacheType extends CacheEntryType = 'cache'>(
+        key: string,
+        value: CacheValue<CacheType>,
+        cacheType?: CacheType
+    ): Promise<void> {
+        const cacheKey = this.getR2Key(key, cacheType);
+        return trace(
+            {
+                operation: 'openNextIncrementalCacheSet',
+                name: cacheKey,
+            },
+            async (span) => {
+                span.setAttribute('cacheType', cacheType ?? 'cache');
+                const r2 = getCloudflareContext().env[BINDING_NAME];
+                const localCache = await this.getCacheInstance();
+                if (!r2) throw new Error('No R2 bucket');
+
+                try {
+                    await r2.put(cacheKey, JSON.stringify(value));
+
+                    //TODO: Check if there is any places where we don't have tags
+                    // Ideally we should always have tags, but in case we don't, we need to decide how to handle it
+                    // For now we default to a build ID tag, which allow us to invalidate the cache in case something is wrong in this deployment
+                    const tags = this.getTagsFromCacheEntry(value) ?? [
+                        `build_id/${process.env.NEXT_BUILD_ID}`,
+                    ];
+
+                    // We consider R2 as the source of truth, so we update the local cache
+                    // only after a successful R2 write
+                    await localCache.put(
+                        this.getCacheUrlKey(cacheKey),
+                        new Response(
+                            JSON.stringify({
+                                value,
+                                // Note: `Date.now()` returns the time of the last IO rather than the actual time.
+                                //       See https://developers.cloudflare.com/workers/reference/security-model/
+                                lastModified: Date.now(),
+                            }),
+                            {
+                                headers: {
+                                    // Cache-Control default to 30 minutes, will be overridden by `revalidate`
+                                    // In theory we should always get the `revalidate` value
+                                    'cache-control': `max-age=${value.revalidate ?? 60 * 30}`,
+                                    'cache-tag': tags.join(','),
+                                },
+                            }
+                        )
+                    );
+                } catch (e) {
+                    console.error('Failed to set to cache', e);
+                }
+            }
+        );
+    }
+
+    async delete(key: string): Promise<void> {
+        const cacheKey = this.getR2Key(key);
+        return trace(
+            {
+                operation: 'openNextIncrementalCacheDelete',
+                name: cacheKey,
+            },
+            async () => {
+                const r2 = getCloudflareContext().env[BINDING_NAME];
+                const localCache = await this.getCacheInstance();
+                if (!r2) throw new Error('No R2 bucket');
+
+                try {
+                    await r2.delete(cacheKey);
+
+                    // Here again R2 is the source of truth, so we delete from local cache first
+                    await localCache.delete(this.getCacheUrlKey(cacheKey));
+                } catch (e) {
+                    console.error('Failed to delete from cache', e);
+                }
+            }
+        );
+    }
+
+    async getCacheInstance(): Promise<Cache> {
+        if (this.localCache) return this.localCache;
+        this.localCache = await caches.open('incremental-cache');
+        return this.localCache;
+    }
+
+    // Utility function to generate keys for R2/Cache API
+    getR2Key(key: string, cacheType: CacheEntryType = 'cache'): string {
+        const hash = createHash('sha256').update(key).digest('hex');
+        return `${DEFAULT_PREFIX}/${cacheType === 'cache' ? process.env?.NEXT_BUILD_ID : 'dataCache'}/${hash}.${cacheType}`.replace(
+            /\/+/g,
+            '/'
+        );
+    }
+
+    getCacheUrlKey(cacheKey: string): string {
+        return `http://cache.local/${cacheKey}`;
+    }
+
+    getTagsFromCacheEntry<CacheType extends CacheEntryType>(
+        entry: CacheValue<CacheType>
+    ): string[] | undefined {
+        if ('tags' in entry && entry.tags) {
+            return entry.tags;
+        }
+
+        if ('meta' in entry && entry.meta && 'headers' in entry.meta && entry.meta.headers) {
+            const rawTags = entry.meta.headers['x-next-cache-tags'];
+            if (typeof rawTags === 'string') {
+                return rawTags.split(',');
+            }
+        }
+        if ('value' in entry) {
+            return entry.tags;
+        }
+    }
+}
+
+export default new GitbookIncrementalCache();

packages/gitbook-v2/package.json

@@ -1,18 +1,24 @@
 {
     "name": "gitbook-v2",
-    "version": "0.1.1",
+    "version": "0.3.0",
     "private": true,
     "dependencies": {
-        "next": "canary",
+        "@gitbook/api": "^0.115.0",
+        "@gitbook/cache-tags": "workspace:*",
+        "@opennextjs/cloudflare": "1.0.3",
+        "@sindresorhus/fnv1a": "^3.1.0",
+        "assert-never": "^1.2.1",
+        "jwt-decode": "^4.0.0",
+        "next": "^15.3.2",
         "react": "^19.0.0",
         "react-dom": "^19.0.0",
-        "@gitbook/api": "0.96.1",
-        "@sindresorhus/fnv1a": "^3.1.0",
-        "server-only": "^0.0.1"
+        "rison": "^0.1.1",
+        "server-only": "^0.0.1",
+        "warn-once": "^0.1.1"
     },
     "devDependencies": {
         "gitbook": "*",
-        "@opennextjs/cloudflare": "^0.5.3",
+        "@types/rison": "^0.0.9",
         "tailwindcss": "^3.4.0",
         "postcss": "^8"
     },
@@ -22,8 +28,9 @@
         "build": "next build",
         "build:v2": "next build",
         "start": "next start",
-        "build:v2:cloudflare": "opennextjs-cloudflare",
-        "dev:v2:cloudflare": "wrangler dev --port 8771",
-        "unit": "bun test"
+        "build:v2:cloudflare": "opennextjs-cloudflare build",
+        "dev:v2:cloudflare": "wrangler dev --port 8771 --env preview",
+        "unit": "bun test",
+        "typecheck": "tsc --noEmit"
     }
 }

packages/gitbook-v2/src/app/sites/dynamic/[mode]/[siteURL]/[siteData]/(content)/[pagePath]/page.tsx

@@ -13,26 +13,24 @@ type PageProps = {
 
 export default async function Page(props: PageProps) {
     const params = await props.params;
-    const context = await getDynamicSiteContext(params);
+    const { context } = await getDynamicSiteContext(params);
     const pathname = getPagePathFromParams(params);
 
-    return <SitePage context={context} pageParams={{ pathname }} redirectOnFallback={true} />;
+    return <SitePage context={context} pageParams={{ pathname }} />;
 }
 
 export async function generateViewport(props: PageProps): Promise<Viewport> {
-    const context = await getDynamicSiteContext(await props.params);
+    const { context } = await getDynamicSiteContext(await props.params);
     return generateSitePageViewport(context);
 }
 
 export async function generateMetadata(props: PageProps): Promise<Metadata> {
-    const [params, searchParams] = await Promise.all([props.params, props.searchParams]);
-    const context = await getDynamicSiteContext(params);
+    const params = await props.params;
+    const { context } = await getDynamicSiteContext(params);
     const pathname = getPagePathFromParams(params);
 
     return generateSitePageMetadata({
         context,
         pageParams: { pathname },
-        redirectOnFallback: true,
-        fallback: !!searchParams.fallback,
     });
 }

packages/gitbook-v2/src/app/sites/dynamic/[mode]/[siteURL]/[siteData]/(content)/layout.tsx

@@ -16,15 +16,16 @@ export default async function SiteDynamicLayout({
     params,
     children,
 }: React.PropsWithChildren<SiteDynamicLayoutProps>) {
-    const context = await getDynamicSiteContext(await params);
+    const { context, visitorAuthClaims } = await getDynamicSiteContext(await params);
     const forcedTheme = await getThemeFromMiddleware();
 
     return (
-        <CustomizationRootLayout customization={context.customization}>
+        <CustomizationRootLayout forcedTheme={forcedTheme} customization={context.customization}>
             <SiteLayout
                 context={context}
                 forcedTheme={forcedTheme}
                 withTracking={!GITBOOK_DISABLE_TRACKING}
+                visitorAuthClaims={visitorAuthClaims}
             >
                 {children}
             </SiteLayout>
@@ -33,11 +34,11 @@ export default async function SiteDynamicLayout({
 }
 
 export async function generateViewport({ params }: SiteDynamicLayoutProps) {
-    const context = await getDynamicSiteContext(await params);
+    const { context } = await getDynamicSiteContext(await params);
     return generateSiteLayoutViewport(context);
 }
 
 export async function generateMetadata({ params }: SiteDynamicLayoutProps) {
-    const context = await getDynamicSiteContext(await params);
+    const { context } = await getDynamicSiteContext(await params);
     return generateSiteLayoutMetadata(context);
 }

packages/gitbook-v2/src/app/sites/dynamic/[mode]/[siteURL]/[siteData]/~gitbook/icon/route.ts

@@ -3,12 +3,10 @@ import type { NextRequest } from 'next/server';
 import { serveIcon } from '@/routes/icon';
 import { type RouteLayoutParams, getDynamicSiteContext } from '@v2/app/utils';
 
-export const dynamic = 'force-static';
-
 export async function GET(
     request: NextRequest,
     { params }: { params: Promise<RouteLayoutParams> }
 ) {
-    const context = await getDynamicSiteContext(await params);
+    const { context } = await getDynamicSiteContext(await params);
     return serveIcon(context, request);
 }

packages/gitbook-v2/src/app/sites/dynamic/[mode]/[siteURL]/[siteData]/~gitbook/ogimage/[pageId]/route.ts

@@ -8,6 +8,6 @@ export async function GET(
     _request: NextRequest,
     { params }: { params: Promise<RouteLayoutParams & PageIdParams> }
 ) {
-    const context = await getDynamicSiteContext(await params);
+    const { context } = await getDynamicSiteContext(await params);
     return serveOGImage(context, await params);
 }

packages/gitbook-v2/src/app/sites/dynamic/[mode]/[siteURL]/[siteData]/~gitbook/pdf/layout.tsx

@@ -0,0 +1,12 @@
+import { PDFRootLayout } from '@/components/PDF';
+import { type RouteLayoutParams, getDynamicSiteContext } from '@v2/app/utils';
+
+export default async function RootLayout(props: {
+    params: Promise<RouteLayoutParams>;
+    children: React.ReactNode;
+}) {
+    const { params, children } = props;
+    const { context } = await getDynamicSiteContext(await params);
+
+    return <PDFRootLayout context={context}>{children}</PDFRootLayout>;
+}

packages/gitbook-v2/src/app/sites/dynamic/[mode]/[siteURL]/[siteData]/~gitbook/pdf/page.tsx

@@ -0,0 +1,20 @@
+import { PDFPage, generatePDFMetadata } from '@/components/PDF';
+import { type RouteLayoutParams, getDynamicSiteContext } from '@v2/app/utils';
+
+export async function generateMetadata({
+    params,
+}: {
+    params: Promise<RouteLayoutParams>;
+}) {
+    const { context } = await getDynamicSiteContext(await params);
+    return generatePDFMetadata(context);
+}
+
+export default async function Page(props: {
+    params: Promise<RouteLayoutParams>;
+    searchParams: Promise<{ [key: string]: string }>;
+}) {
+    const { params, searchParams } = props;
+    const { context } = await getDynamicSiteContext(await params);
+    return <PDFPage context={context} searchParams={await searchParams} />;
+}

packages/gitbook-v2/src/app/sites/dynamic/[mode]/[siteURL]/llms.txt/route.ts

@@ -1,12 +0,0 @@
-import type { NextRequest } from 'next/server';
-
-import { serveLLMsTxt } from '@/routes/llms';
-import { type RouteLayoutParams, getDynamicSiteContext } from '@v2/app/utils';
-
-export async function GET(
-    _request: NextRequest,
-    { params }: { params: Promise<RouteLayoutParams> }
-) {
-    const context = await getDynamicSiteContext(await params);
-    return serveLLMsTxt(context);
-}

packages/gitbook-v2/src/app/sites/dynamic/[mode]/[siteURL]/robots.txt/route.ts

@@ -1,12 +0,0 @@
-import type { NextRequest } from 'next/server';
-
-import { serveRobotsTxt } from '@/routes/robots';
-import { type RouteLayoutParams, getDynamicSiteContext } from '@v2/app/utils';
-
-export async function GET(
-    _request: NextRequest,
-    { params }: { params: Promise<RouteLayoutParams> }
-) {
-    const context = await getDynamicSiteContext(await params);
-    return serveRobotsTxt(context);
-}

packages/gitbook-v2/src/app/sites/dynamic/[mode]/[siteURL]/sitemap-pages.xml/route.ts

@@ -1,12 +0,0 @@
-import type { NextRequest } from 'next/server';
-
-import { servePagesSitemap } from '@/routes/sitemap';
-import { type RouteLayoutParams, getDynamicSiteContext } from '@v2/app/utils';
-
-export async function GET(
-    _request: NextRequest,
-    { params }: { params: Promise<RouteLayoutParams> }
-) {
-    const context = await getDynamicSiteContext(await params);
-    return servePagesSitemap(context);
-}

packages/gitbook-v2/src/app/sites/dynamic/[mode]/[siteURL]/sitemap.xml/route.ts

@@ -1,12 +0,0 @@
-import type { NextRequest } from 'next/server';
-
-import { serveRootSitemap } from '@/routes/sitemap';
-import { type RouteLayoutParams, getDynamicSiteContext } from '@v2/app/utils';
-
-export async function GET(
-    _request: NextRequest,
-    { params }: { params: Promise<RouteLayoutParams> }
-) {
-    const context = await getDynamicSiteContext(await params);
-    return serveRootSitemap(context);
-}

packages/gitbook-v2/src/app/sites/static/[mode]/[siteURL]/[siteData]/[pagePath]/page.tsx

@@ -4,9 +4,8 @@ import {
     generateSitePageViewport,
 } from '@/components/SitePage';
 import { type RouteParams, getPagePathFromParams, getStaticSiteContext } from '@v2/app/utils';
-import { getSiteCacheTag } from '@v2/lib/cache';
+
 import type { Metadata, Viewport } from 'next';
-import { unstable_cacheTag as cacheTag } from 'next/cache';
 
 export const dynamic = 'force-static';
 
@@ -15,30 +14,25 @@ type PageProps = {
 };
 
 export default async function Page(props: PageProps) {
-    'use cache';
-
     const params = await props.params;
-    const context = await getStaticSiteContext(params);
+    const { context } = await getStaticSiteContext(params);
     const pathname = getPagePathFromParams(params);
 
-    cacheTag(getSiteCacheTag(context.site.id));
-
-    return <SitePage context={context} pageParams={{ pathname }} redirectOnFallback={true} />;
+    return <SitePage context={context} pageParams={{ pathname }} />;
 }
 
 export async function generateViewport(props: PageProps): Promise<Viewport> {
-    const context = await getStaticSiteContext(await props.params);
+    const { context } = await getStaticSiteContext(await props.params);
     return generateSitePageViewport(context);
 }
 
 export async function generateMetadata(props: PageProps): Promise<Metadata> {
     const params = await props.params;
-    const context = await getStaticSiteContext(params);
+    const { context } = await getStaticSiteContext(params);
     const pathname = getPagePathFromParams(params);
 
     return generateSitePageMetadata({
         context,
         pageParams: { pathname },
-        redirectOnFallback: true,
     });
 }

packages/gitbook-v2/src/app/sites/static/[mode]/[siteURL]/[siteData]/layout.tsx

@@ -5,9 +5,7 @@ import {
     generateSiteLayoutViewport,
 } from '@/components/SiteLayout';
 import { type RouteLayoutParams, getStaticSiteContext } from '@v2/app/utils';
-import { getSiteCacheTag } from '@v2/lib/cache';
 import { GITBOOK_DISABLE_TRACKING } from '@v2/lib/env';
-import { unstable_cacheTag as cacheTag } from 'next/cache';
 
 interface SiteStaticLayoutProps {
     params: Promise<RouteLayoutParams>;
@@ -17,15 +15,15 @@ export default async function SiteStaticLayout({
     params,
     children,
 }: React.PropsWithChildren<SiteStaticLayoutProps>) {
-    'use cache';
-
-    const context = await getStaticSiteContext(await params);
-
-    cacheTag(getSiteCacheTag(context.site.id));
+    const { context, visitorAuthClaims } = await getStaticSiteContext(await params);
 
     return (
         <CustomizationRootLayout customization={context.customization}>
-            <SiteLayout context={context} withTracking={!GITBOOK_DISABLE_TRACKING}>
+            <SiteLayout
+                context={context}
+                withTracking={!GITBOOK_DISABLE_TRACKING}
+                visitorAuthClaims={visitorAuthClaims}
+            >
                 {children}
             </SiteLayout>
         </CustomizationRootLayout>
@@ -33,11 +31,11 @@ export default async function SiteStaticLayout({
 }
 
 export async function generateViewport({ params }: SiteStaticLayoutProps) {
-    const context = await getStaticSiteContext(await params);
+    const { context } = await getStaticSiteContext(await params);
     return generateSiteLayoutViewport(context);
 }
 
 export async function generateMetadata({ params }: SiteStaticLayoutProps) {
-    const context = await getStaticSiteContext(await params);
+    const { context } = await getStaticSiteContext(await params);
     return generateSiteLayoutMetadata(context);
 }

packages/gitbook-v2/src/app/sites/static/[mode]/[siteURL]/[siteData]/llms.txt/route.ts

@@ -9,6 +9,6 @@ export async function GET(
     _request: NextRequest,
     { params }: { params: Promise<RouteLayoutParams> }
 ) {
-    const context = await getStaticSiteContext(await params);
-    return serveLLMsTxt(context);
+    const { context } = await getStaticSiteContext(await params);
+    return serveLLMsTxt(context, { withMarkdownPages: true });
 }

packages/gitbook-v2/src/app/sites/static/[mode]/[siteURL]/[siteData]/robots.txt/route.ts

@@ -9,6 +9,6 @@ export async function GET(
     _request: NextRequest,
     { params }: { params: Promise<RouteLayoutParams> }
 ) {
-    const context = await getStaticSiteContext(await params);
+    const { context } = await getStaticSiteContext(await params);
     return serveRobotsTxt(context);
 }

packages/gitbook-v2/src/app/sites/static/[mode]/[siteURL]/[siteData]/sitemap-pages.xml/route.ts

@@ -9,6 +9,6 @@ export async function GET(
     _request: NextRequest,
     { params }: { params: Promise<RouteLayoutParams> }
 ) {
-    const context = await getStaticSiteContext(await params);
+    const { context } = await getStaticSiteContext(await params);
     return servePagesSitemap(context);
 }

packages/gitbook-v2/src/app/sites/static/[mode]/[siteURL]/[siteData]/sitemap.xml/route.ts

@@ -9,6 +9,6 @@ export async function GET(
     _request: NextRequest,
     { params }: { params: Promise<RouteLayoutParams> }
 ) {
-    const context = await getStaticSiteContext(await params);
+    const { context } = await getStaticSiteContext(await params);
     return serveRootSitemap(context);
 }

packages/gitbook-v2/src/app/sites/static/[mode]/[siteURL]/[siteData]/~gitbook/icon/route.ts

@@ -9,6 +9,6 @@ export async function GET(
     request: NextRequest,
     { params }: { params: Promise<RouteLayoutParams> }
 ) {
-    const context = await getStaticSiteContext(await params);
+    const { context } = await getStaticSiteContext(await params);
     return serveIcon(context, request);
 }

packages/gitbook-v2/src/app/sites/static/[mode]/[siteURL]/[siteData]/~gitbook/markdown/[pagePath]/route.ts

@@ -0,0 +1,11 @@
+import { servePageMarkdown } from '@/routes/markdownPage';
+import { type RouteParams, getPagePathFromParams, getStaticSiteContext } from '@v2/app/utils';
+import type { NextRequest } from 'next/server';
+
+export const dynamic = 'force-static';
+
+export async function GET(_request: NextRequest, { params }: { params: Promise<RouteParams> }) {
+    const { context } = await getStaticSiteContext(await params);
+    const pathname = getPagePathFromParams(await params);
+    return servePageMarkdown(context, pathname);
+}

packages/gitbook-v2/src/app/sites/static/[mode]/[siteURL]/[siteData]/~gitbook/ogimage/[pageId]/route.ts

@@ -10,6 +10,6 @@ export async function GET(
     _request: NextRequest,
     { params }: { params: Promise<RouteLayoutParams & PageIdParams> }
 ) {
-    const context = await getStaticSiteContext(await params);
+    const { context } = await getStaticSiteContext(await params);
     return serveOGImage(context, await params);
 }

packages/gitbook-v2/src/app/utils.ts

@@ -1,9 +1,9 @@
-import { fetchSiteContextByURL } from '@v2/lib/context';
-import { createDataFetcher } from '@v2/lib/data';
-import { GITBOOK_API_TOKEN, GITBOOK_API_URL, GITBOOK_URL } from '@v2/lib/env';
-import { createImageResizer } from '@v2/lib/images';
-import { createLinker } from '@v2/lib/links';
-import { headers } from 'next/headers';
+import { getVisitorAuthClaims, getVisitorAuthClaimsFromToken } from '@/lib/adaptive';
+import type { SiteAPIToken } from '@gitbook/api';
+import { type SiteURLData, fetchSiteContextByURLLookup, getBaseContext } from '@v2/lib/context';
+import { jwtDecode } from 'jwt-decode';
+import { forbidden } from 'next/navigation';
+import rison from 'rison';
 
 export type RouteParamMode = 'url-host' | 'url';
 
@@ -12,6 +12,9 @@ export type RouteLayoutParams = {
 
     /** URL encoded site URL */
     siteURL: string;
+
+    /** URL and Rison encoded site data from getPublishedContentByUrl */
+    siteData: string;
 };
 
 export type RouteParams = RouteLayoutParams & {
@@ -22,28 +25,29 @@ export type RouteParams = RouteLayoutParams & {
  * Get the static context when rendering statically a site.
  */
 export async function getStaticSiteContext(params: RouteLayoutParams) {
-    const url = getSiteURLFromParams(params);
+    const siteURL = getSiteURLFromParams(params);
+    const siteURLData = getSiteURLDataFromParams(params);
 
-    const dataFetcher = createDataFetcher();
-    const { linker, host } = createLinkerFromParams(params);
-    const context = await fetchSiteContextByURL(
-        {
-            dataFetcher,
-            linker,
-        },
-        {
-            url: url.toString(),
-            visitorAuthToken: null,
-            redirectOnError: false,
-        }
+    // For static routes, we check the expiration of the JWT token
+    // as the route might be revalidated after expiration
+    const decoded = jwtDecode<SiteAPIToken & { exp: number }>(siteURLData.apiToken);
+    if (decoded.exp && decoded.exp < Date.now() / 1000 + 120) {
+        forbidden();
+    }
+
+    const context = await fetchSiteContextByURLLookup(
+        getBaseContext({
+            siteURL,
+            siteURLData,
+            urlMode: getModeFromParams(params.mode),
+        }),
+        siteURLData
     );
 
-    context.imageResizer = createImageResizer({
-        host,
-        linker: context.linker,
-    });
-
-    return context;
+    return {
+        context,
+        visitorAuthClaims: getVisitorAuthClaimsFromToken(decoded),
+    };
 }
 
 /**
@@ -51,36 +55,22 @@ export async function getStaticSiteContext(params: RouteLayoutParams) {
  * The context will depend on the request.
  */
 export async function getDynamicSiteContext(params: RouteLayoutParams) {
-    const url = getSiteURLFromParams(params);
-    const headersSet = await headers();
+    const siteURL = getSiteURLFromParams(params);
+    const siteURLData = getSiteURLDataFromParams(params);
 
-    const dataFetcher = createDataFetcher({
-        apiToken: headersSet.get('x-gitbook-token') ?? GITBOOK_API_TOKEN,
-        apiEndpoint: headersSet.get('x-gitbook-api') ?? GITBOOK_API_URL,
-    });
-
-    const { linker, host } = createLinkerFromParams(params);
-
-    const context = await fetchSiteContextByURL(
-        {
-            dataFetcher,
-            linker,
-        },
-        {
-            url: url.toString(),
-            visitorAuthToken: headersSet.get('x-gitbook-visitor-token'),
-
-            // TODO: set it only when the token comes from the cookies.
-            redirectOnError: true,
-        }
+    const context = await fetchSiteContextByURLLookup(
+        getBaseContext({
+            siteURL,
+            siteURLData,
+            urlMode: getModeFromParams(params.mode),
+        }),
+        siteURLData
     );
 
-    context.imageResizer = createImageResizer({
-        host,
-        linker: context.linker,
-    });
-
-    return context;
+    return {
+        context,
+        visitorAuthClaims: getVisitorAuthClaims(siteURLData),
+    };
 }
 
 /**
@@ -91,39 +81,6 @@ export function getPagePathFromParams(params: RouteParams) {
     return decoded;
 }
 
-function createLinkerFromParams(params: RouteLayoutParams) {
-    const url = getSiteURLFromParams(params);
-    const mode = getModeFromParams(params.mode);
-
-    if (mode === 'url-host') {
-        return {
-            linker: createLinker({
-                host: url.host,
-                pathname: '/',
-            }),
-            host: url.host,
-        };
-    }
-
-    const gitbookURL = new URL(GITBOOK_URL);
-    const linker = createLinker({
-        protocol: gitbookURL.protocol,
-        host: gitbookURL.host,
-        pathname: `/url/${url.host}`,
-    });
-
-    // Create link in the same format for links to other sites/sections.
-    linker.toLinkForContent = (rawURL: string) => {
-        const urlObject = new URL(rawURL);
-        return `/url/${urlObject.host}${urlObject.pathname}`;
-    };
-
-    return {
-        linker,
-        host: gitbookURL.host,
-    };
-}
-
 function getSiteURLFromParams(params: RouteLayoutParams) {
     const decoded = decodeURIComponent(params.siteURL);
     const url = new URL(`https://${decoded}`);
@@ -137,3 +94,11 @@ function getModeFromParams(mode: string): RouteParamMode {
 
     return 'url';
 }
+
+/**
+ * Get the decoded site data from the params.
+ */
+function getSiteURLDataFromParams(params: RouteLayoutParams): SiteURLData {
+    const decoded = decodeURIComponent(params.siteData);
+    return rison.decode(decoded);
+}

packages/gitbook-v2/src/app/~gitbook/env/route.ts

@@ -0,0 +1,40 @@
+import { type NextRequest, NextResponse } from 'next/server';
+
+import {
+    GITBOOK_API_PUBLIC_URL,
+    GITBOOK_API_TOKEN,
+    GITBOOK_API_URL,
+    GITBOOK_APP_URL,
+    GITBOOK_ASSETS_URL,
+    GITBOOK_DISABLE_TRACKING,
+    GITBOOK_FONTS_URL,
+    GITBOOK_ICONS_URL,
+    GITBOOK_IMAGE_RESIZE_SIGNING_KEY,
+    GITBOOK_INTEGRATIONS_HOST,
+    GITBOOK_SECRET,
+    GITBOOK_URL,
+    GITBOOK_USER_AGENT,
+} from '@v2/lib/env';
+
+/**
+ * Output the public environment variables for this deployment
+ */
+export async function GET(_req: NextRequest) {
+    return NextResponse.json({
+        GITBOOK_URL,
+        GITBOOK_APP_URL,
+        GITBOOK_API_URL,
+        GITBOOK_API_PUBLIC_URL,
+        GITBOOK_ASSETS_URL,
+        GITBOOK_FONTS_URL,
+        GITBOOK_ICONS_URL,
+        GITBOOK_USER_AGENT,
+        GITBOOK_INTEGRATIONS_HOST,
+        GITBOOK_DISABLE_TRACKING,
+
+        // Secret envs
+        GITBOOK_SECRET: !!GITBOOK_SECRET,
+        GITBOOK_API_TOKEN: !!GITBOOK_API_TOKEN,
+        GITBOOK_IMAGE_RESIZE_SIGNING_KEY: !!GITBOOK_IMAGE_RESIZE_SIGNING_KEY,
+    });
+}

packages/gitbook-v2/src/app/~gitbook/revalidate/route.ts

@@ -0,0 +1,35 @@
+import { type NextRequest, NextResponse } from 'next/server';
+
+import { withVerifySignature } from '@v2/lib/routes';
+import { revalidateTag } from 'next/cache';
+
+interface JsonBody {
+    tags: string[];
+}
+
+/**
+ * Revalidate cached data based on tags.
+ * The body should be a JSON with { tags: string[] }
+ */
+export async function POST(req: NextRequest) {
+    return withVerifySignature<JsonBody>(req, async (body) => {
+        if (!body.tags || !Array.isArray(body.tags)) {
+            return NextResponse.json(
+                {
+                    error: 'tags must be an array',
+                },
+                { status: 400 }
+            );
+        }
+
+        body.tags.forEach((tag) => {
+            // biome-ignore lint/suspicious/noConsole: we want to log here
+            console.log(`Revalidating tag: ${tag}`);
+            revalidateTag(tag);
+        });
+
+        return NextResponse.json({
+            success: true,
+        });
+    });
+}

packages/gitbook-v2/src/app/~space/[spaceId]/pdf.ts

@@ -0,0 +1,59 @@
+import {
+    type GitBookBaseContext,
+    type GitBookSpaceContext,
+    fetchSpaceContextByIds,
+} from '@v2/lib/context';
+import { createDataFetcher } from '@v2/lib/data';
+import { createLinker } from '@v2/lib/links';
+import { getAPITokenFromMiddleware } from '@v2/lib/middleware';
+
+export type SpacePDFRouteParams = {
+    spaceId: string;
+    changeRequestId?: string;
+    revisionId?: string;
+};
+
+export async function getSpacePDFContext(
+    params: SpacePDFRouteParams
+): Promise<GitBookSpaceContext> {
+    const { spaceId } = params;
+
+    const apiToken = await getAPITokenFromMiddleware();
+
+    const basePath = getPDFRoutePath(params);
+    const linker = createLinker({
+        spaceBasePath: basePath,
+        siteBasePath: basePath,
+    });
+    const dataFetcher = createDataFetcher({
+        apiToken: apiToken,
+    });
+
+    const baseContext: GitBookBaseContext = {
+        linker,
+        dataFetcher,
+    };
+
+    return await fetchSpaceContextByIds(baseContext, {
+        space: spaceId,
+        shareKey: undefined,
+        changeRequest: params.changeRequestId,
+        revision: params.revisionId,
+    });
+}
+
+function getPDFRoutePath(params: SpacePDFRouteParams) {
+    let path = `/~space/${params.spaceId}`;
+
+    if (params.changeRequestId) {
+        path += `/~/changes/${params.changeRequestId}`;
+    }
+
+    if (params.revisionId) {
+        path += `/~/revisions/${params.revisionId}`;
+    }
+
+    path += '~gitbook/pdf';
+
+    return path;
+}

packages/gitbook-v2/src/app/~space/[spaceId]/~/changes/[changeRequestId]/~gitbook/pdf/layout.tsx

@@ -0,0 +1,2 @@
+import RootLayout from '@v2/app/~space/[spaceId]/~gitbook/pdf/layout';
+export default RootLayout;

packages/gitbook-v2/src/app/~space/[spaceId]/~/changes/[changeRequestId]/~gitbook/pdf/page.tsx

@@ -0,0 +1,4 @@
+import PDFPage, { generateMetadata } from '@v2/app/~space/[spaceId]/~gitbook/pdf/page';
+
+export default PDFPage;
+export { generateMetadata };

packages/gitbook-v2/src/app/~space/[spaceId]/~/revisions/[changeRequestId]/~gitbook/pdf/layout.tsx

@@ -0,0 +1,2 @@
+import RootLayout from '@v2/app/~space/[spaceId]/~gitbook/pdf/layout';
+export default RootLayout;

packages/gitbook-v2/src/app/~space/[spaceId]/~/revisions/[changeRequestId]/~gitbook/pdf/page.tsx

@@ -0,0 +1,4 @@
+import PDFPage, { generateMetadata } from '@v2/app/~space/[spaceId]/~gitbook/pdf/page';
+
+export default PDFPage;
+export { generateMetadata };

packages/gitbook-v2/src/app/~space/[spaceId]/~gitbook/pdf/layout.tsx

@@ -0,0 +1,12 @@
+import { PDFRootLayout } from '@/components/PDF';
+import { type SpacePDFRouteParams, getSpacePDFContext } from '@v2/app/~space/[spaceId]/pdf';
+
+export default async function RootLayout(props: {
+    params: Promise<SpacePDFRouteParams>;
+    children: React.ReactNode;
+}) {
+    const { params, children } = props;
+    const context = await getSpacePDFContext(await params);
+
+    return <PDFRootLayout context={context}>{children}</PDFRootLayout>;
+}

packages/gitbook-v2/src/app/~space/[spaceId]/~gitbook/pdf/page.tsx

@@ -0,0 +1,20 @@
+import { PDFPage, generatePDFMetadata } from '@/components/PDF';
+import { type SpacePDFRouteParams, getSpacePDFContext } from '@v2/app/~space/[spaceId]/pdf';
+
+export async function generateMetadata({
+    params,
+}: {
+    params: Promise<SpacePDFRouteParams>;
+}) {
+    const context = await getSpacePDFContext(await params);
+    return generatePDFMetadata(context);
+}
+
+export default async function Page(props: {
+    params: Promise<SpacePDFRouteParams>;
+    searchParams: Promise<{ [key: string]: string }>;
+}) {
+    const { params, searchParams } = props;
+    const context = await getSpacePDFContext(await params);
+    return <PDFPage context={context} searchParams={await searchParams} />;
+}

packages/gitbook-v2/src/lib/cache.ts

@@ -1,34 +0,0 @@
-/**
- * Get the cache tag for a site.
- */
-export function getSiteCacheTag(siteId: string) {
-    return `site:${siteId}`;
-}
-
-/**
- * Get the cache tag for a hostname.
- */
-export function getHostnameCacheTag(hostname: string) {
-    return `url:${hostname}`;
-}
-
-/**
- * Get the cache tag for an OpenAPI spec.
- */
-export function getOpenAPISpecCacheTag(organizationId: string, slug: string) {
-    return `organization:${organizationId}:openapi:${slug}`;
-}
-
-/**
- * Get the cache tag for a space.
- */
-export function getSpaceCacheTag(spaceId: string) {
-    return `space:${spaceId}`;
-}
-
-/**
- * Get the cache tag for a change request.
- */
-export function getChangeRequestCacheTag(spaceId: string, changeRequestId: string) {
-    return `space:${spaceId}:change-request:${changeRequestId}`;
-}

packages/gitbook-v2/src/lib/context.ts

@@ -1,6 +1,7 @@
 import { getSiteStructureSections } from '@/lib/sites';
 import type {
     ChangeRequest,
+    PublishedSiteContent,
     RevisionPage,
     RevisionPageDocument,
     Site,
@@ -12,11 +13,42 @@ import type {
     SiteStructure,
     Space,
 } from '@gitbook/api';
-import { type GitBookDataFetcher, createDataFetcher } from '@v2/lib/data';
-import { redirect } from 'next/navigation';
+import {
+    type GitBookDataFetcher,
+    createDataFetcher,
+    getDataOrNull,
+    throwIfDataError,
+} from '@v2/lib/data';
+import assertNever from 'assert-never';
+import { notFound } from 'next/navigation';
 import { assert } from 'ts-essentials';
-import type { ImageResizer } from './images';
-import { type GitBookSpaceLinker, appendBasePathToLinker } from './links';
+import { GITBOOK_URL } from './env';
+import { type ImageResizer, createImageResizer } from './images';
+import { type GitBookLinker, createLinker } from './links';
+
+/**
+ * Data about the site URL. Provided by the middleware.
+ * These data are stable between pages in the same site space.
+ */
+export type SiteURLData = Pick<
+    PublishedSiteContent,
+    | 'organization'
+    | 'apiToken'
+    | 'site'
+    | 'siteSpace'
+    | 'space'
+    | 'revision'
+    | 'changeRequest'
+    | 'shareKey'
+    | 'siteSection'
+    | 'siteBasePath'
+    | 'basePath'
+> & {
+    /**
+     * Identifier used for image resizing.
+     */
+    imagesContextId: string;
+};
 
 /**
  * Generic context when rendering content.
@@ -30,7 +62,7 @@ export type GitBookBaseContext = {
     /**
      * Linker to generate links in the current space.
      */
-    linker: GitBookSpaceLinker;
+    linker: GitBookLinker;
 
     /**
      * Image resizer to resize images.
@@ -90,9 +122,6 @@ export type GitBookSiteContext = GitBookSpaceContext & {
 
     /** Scripts to load for the site. */
     scripts: SiteIntegrationScript[];
-
-    /** Visitor token used to fetch the site */
-    visitorAuthToken: string | null;
 };
 
 /**
@@ -103,54 +132,74 @@ export type GitBookPageContext = (GitBookSpaceContext | GitBookSiteContext) & {
 };
 
 /**
- * Fetch the context of a site for a given URL and a base context.
+ * Get the base context for a request on a site.
  */
-export async function fetchSiteContextByURL(
-    baseContext: GitBookBaseContext,
-    input: {
-        url: string;
-        visitorAuthToken: string | null;
-        redirectOnError: boolean;
-    }
-): Promise<GitBookSiteContext> {
-    const { dataFetcher } = baseContext;
-    const data = await dataFetcher.getPublishedContentByUrl({
-        url: input.url,
-        visitorAuthToken: input.visitorAuthToken,
-        redirectOnError: input.redirectOnError,
+export function getBaseContext(input: {
+    siteURL: URL | string;
+    siteURLData: SiteURLData;
+    urlMode: 'url' | 'url-host';
+}) {
+    const { urlMode, siteURLData } = input;
+    const siteURL = typeof input.siteURL === 'string' ? new URL(input.siteURL) : input.siteURL;
+
+    const dataFetcher = createDataFetcher({
+        apiToken: siteURLData.apiToken ?? null,
     });
 
-    if ('redirect' in data) {
-        redirect(data.redirect);
+    const gitbookURL = GITBOOK_URL ? new URL(GITBOOK_URL) : undefined;
+    const linker =
+        urlMode === 'url-host'
+            ? createLinker({
+                  host: siteURL.host,
+                  siteBasePath: siteURLData.siteBasePath,
+                  spaceBasePath: siteURLData.basePath,
+              })
+            : createLinker({
+                  protocol: gitbookURL?.protocol,
+                  host: gitbookURL?.host,
+                  siteBasePath: `/url/${siteURL.host}${siteURLData.siteBasePath}`,
+                  spaceBasePath: `/url/${siteURL.host}${siteURLData.basePath}`,
+              });
+
+    if (urlMode === 'url') {
+        // Create link in the same format for links to other sites/sections.
+        linker.toLinkForContent = (rawURL: string) => {
+            const urlObject = new URL(rawURL);
+            return `/url/${urlObject.host}${urlObject.pathname}${urlObject.search}`;
+        };
     }
 
-    const context = await fetchSiteContextByIds(
-        {
-            ...baseContext,
-            dataFetcher: createDataFetcher({
-                apiEndpoint: dataFetcher.apiEndpoint,
-                apiToken: data.apiToken,
-            }),
-        },
-        {
-            organization: data.organization,
-            site: data.site,
-            siteSection: data.siteSection,
-            siteSpace: data.siteSpace,
-            space: data.space,
-            shareKey: data.shareKey,
-            changeRequest: data.changeRequest,
-            revision: data.revision,
-            visitorAuthToken: input.visitorAuthToken,
-        }
-    );
+    const imageResizer = createImageResizer({
+        imagesContextId: siteURLData.imagesContextId,
+        // To ensure image resizing work for proxied sites,
+        // we serve images from the root of the site.
+        linker: linker,
+    });
 
-    const siteContext = {
-        ...context,
-        linker: appendBasePathToLinker(context.linker, data.basePath),
+    return {
+        dataFetcher,
+        linker,
+        imageResizer,
     };
+}
 
-    return siteContext;
+/**
+ * Fetch the context of a site using the resolution of a URL
+ */
+export async function fetchSiteContextByURLLookup(
+    baseContext: GitBookBaseContext,
+    data: SiteURLData
+): Promise<GitBookSiteContext> {
+    return await fetchSiteContextByIds(baseContext, {
+        organization: data.organization,
+        site: data.site,
+        siteSection: data.siteSection,
+        siteSpace: data.siteSpace,
+        space: data.space,
+        shareKey: data.shareKey,
+        changeRequest: data.changeRequest,
+        revision: data.revision,
+    });
 }
 
 /**
@@ -167,18 +216,19 @@ export async function fetchSiteContextByIds(
         shareKey: string | undefined;
         changeRequest: string | undefined;
         revision: string | undefined;
-        visitorAuthToken: string | null;
     }
 ): Promise<GitBookSiteContext> {
     const { dataFetcher } = baseContext;
 
     const [{ site: orgSite, structure: siteStructure, customizations, scripts }, spaceContext] =
         await Promise.all([
-            dataFetcher.getPublishedContentSite({
-                organizationId: ids.organization,
-                siteId: ids.site,
-                siteShareKey: ids.shareKey,
-            }),
+            throwIfDataError(
+                dataFetcher.getPublishedContentSite({
+                    organizationId: ids.organization,
+                    siteId: ids.site,
+                    siteShareKey: ids.shareKey,
+                })
+            ),
             fetchSpaceContextByIds(baseContext, ids),
         ]);
 
@@ -193,19 +243,45 @@ export async function fetchSiteContextByIds(
         ? parseSiteSectionsAndGroups(siteStructure, ids.siteSection)
         : null;
 
-    const siteSpace = (
-        siteStructure.type === 'siteSpaces' && siteStructure.structure
-            ? siteStructure.structure
-            : sections?.current.siteSpaces
-    )?.find((siteSpace) => siteSpace.id === ids.siteSpace);
-    if (!siteSpace) {
-        throw new Error('Site space not found');
-    }
+    // Parse the current siteSpace and siteSpaces based on the site structure type.
+    const { siteSpaces, siteSpace }: { siteSpaces: SiteSpace[]; siteSpace: SiteSpace } = (() => {
+        if (siteStructure.type === 'siteSpaces') {
+            const siteSpaces = siteStructure.structure;
+            const siteSpace = siteSpaces.find((siteSpace) => siteSpace.id === ids.siteSpace);
 
-    const siteSpaces =
-        siteStructure.type === 'siteSpaces'
-            ? siteStructure.structure
-            : (sections?.current.siteSpaces ?? []);
+            if (!siteSpace) {
+                throw new Error(
+                    `Site space "${ids.siteSpace}" not found in structure type="siteSpaces"`
+                );
+            }
+
+            return { siteSpaces, siteSpace };
+        }
+
+        if (siteStructure.type === 'sections') {
+            assert(
+                sections,
+                `cannot find site space "${ids.siteSpace}" because parsed sections are missing siteStructure.type="sections" siteSection="${ids.siteSection}"`
+            );
+
+            const currentSection = sections.current;
+            const siteSpaces = currentSection.siteSpaces;
+            const siteSpace = currentSection.siteSpaces.find(
+                (siteSpace) => siteSpace.id === ids.siteSpace
+            );
+
+            if (!siteSpace) {
+                throw new Error(
+                    `Site space "${ids.siteSpace}" not found in structure type="sections" currentSection="${currentSection.id}"`
+                );
+            }
+
+            return { siteSpaces, siteSpace };
+        }
+
+        // @ts-expect-error
+        assertNever(siteStructure, `cannot handle site structure of type ${siteStructure.type}`);
+    })();
 
     const customization = (() => {
         if (ids.siteSpace) {
@@ -233,7 +309,6 @@ export async function fetchSiteContextByIds(
         structure: siteStructure,
         sections,
         scripts,
-        visitorAuthToken: ids.visitorAuthToken,
     };
 }
 
@@ -252,27 +327,46 @@ export async function fetchSpaceContextByIds(
     const { dataFetcher } = baseContext;
 
     const [space, changeRequest] = await Promise.all([
-        dataFetcher.getSpace({
-            spaceId: ids.space,
-            shareKey: ids.shareKey,
-        }),
+        throwIfDataError(
+            dataFetcher.getSpace({
+                spaceId: ids.space,
+                shareKey: ids.shareKey,
+            })
+        ),
         ids.changeRequest
-            ? dataFetcher.getChangeRequest({
-                  spaceId: ids.space,
-                  changeRequestId: ids.changeRequest,
-              })
+            ? getDataOrNull(
+                  dataFetcher.getChangeRequest({
+                      spaceId: ids.space,
+                      changeRequestId: ids.changeRequest,
+                  })
+              )
             : null,
     ]);
 
-    const revisionId = changeRequest?.revision ?? ids.revision ?? space.revision;
+    if (ids.changeRequest && !changeRequest) {
+        // When trying to render a change request with an invalid / non-existing ID,
+        // we should return a 404.
+        notFound();
+    }
 
-    const pages = await dataFetcher.getRevisionPages({
-        spaceId: ids.space,
-        revisionId,
-        // We only care about the Git metadata when the Git sync is enabled,
-        // otherwise we can optimize performance by not fetching it
-        metadata: !!space.gitSync,
-    });
+    const revisionId = ids.revision ?? changeRequest?.revision ?? space.revision;
+
+    const pages = await getDataOrNull(
+        dataFetcher.getRevisionPages({
+            spaceId: ids.space,
+            revisionId,
+            // We only care about the Git metadata when the Git sync is enabled,
+            // otherwise we can optimize performance by not fetching it
+            metadata: !!space.gitSync,
+        }),
+
+        // When trying to render a revision with an invalid / non-existing ID,
+        // we should handle gracefully the 404 and throw notFound.
+        ids.revision ? [404] : undefined
+    );
+    if (!pages) {
+        notFound();
+    }
 
     return {
         ...baseContext,
@@ -313,7 +407,7 @@ export function checkIsRootSiteContext(context: GitBookSiteContext): boolean {
 function parseSiteSectionsAndGroups(structure: SiteStructure, siteSectionId: string) {
     const sectionsAndGroups = getSiteStructureSections(structure, { ignoreGroups: false });
     const section = parseCurrentSection(structure, siteSectionId);
-    assert(section, 'A section must be defined when there are multiple sections');
+    assert(section, `couldn't find section "${siteSectionId}" in site structure`);
     return { list: sectionsAndGroups, current: section } satisfies SiteSections;
 }
 

packages/gitbook-v2/src/lib/data/cloudflare.ts

@@ -0,0 +1,25 @@
+import { getCloudflareContext as getCloudflareContextOpenNext } from '@opennextjs/cloudflare';
+import { GITBOOK_RUNTIME } from '../env';
+
+/**
+ * Return the Cloudflare context or null when not running in Cloudflare.
+ */
+export function getCloudflareContext() {
+    if (GITBOOK_RUNTIME !== 'cloudflare') {
+        return null;
+    }
+
+    return getCloudflareContextOpenNext();
+}
+
+/**
+ * Return an object representing the current request.
+ */
+export function getCloudflareRequestGlobal() {
+    const context = getCloudflareContext();
+    if (!context) {
+        return null;
+    }
+
+    return context.cf;
+}

packages/gitbook-v2/src/lib/data/errors.ts

@@ -0,0 +1,123 @@
+import { GitBookAPIError } from '@gitbook/api';
+import type { DataFetcherErrorData, DataFetcherResponse } from './types';
+
+export class DataFetcherError extends Error {
+    constructor(
+        message: string,
+        public readonly code: number
+    ) {
+        super(message);
+    }
+}
+
+/**
+ * Throw an error if the response contains an error.
+ */
+export function throwIfDataError<T>(response: DataFetcherResponse<T>): T;
+export function throwIfDataError<T>(response: Promise<DataFetcherResponse<T>>): Promise<T>;
+export function throwIfDataError<T>(
+    response: DataFetcherResponse<T> | Promise<DataFetcherResponse<T>>
+): T | Promise<T> {
+    if (response instanceof Promise) {
+        return response.then((result) => throwIfDataError(result));
+    }
+
+    if (response.error) {
+        throw new DataFetcherError(response.error.message, response.error.code);
+    }
+    return response.data;
+}
+
+/**
+ * Get the data from the response or null if there is an "Not found" error.
+ */
+export function getDataOrNull<T>(
+    response: DataFetcherResponse<T>,
+    ignoreErrors?: number[]
+): T | null;
+export function getDataOrNull<T>(
+    response: Promise<DataFetcherResponse<T>>,
+    ignoreErrors?: number[]
+): Promise<T | null>;
+export function getDataOrNull<T>(
+    response: DataFetcherResponse<T> | Promise<DataFetcherResponse<T>>,
+    ignoreErrors: number[] = [404]
+): T | null | Promise<T | null> {
+    if (response instanceof Promise) {
+        return response.then((result) => getDataOrNull(result, ignoreErrors));
+    }
+
+    if (response.error) {
+        if (ignoreErrors.includes(response.error.code)) return null;
+        throw new DataFetcherError(response.error.message, response.error.code);
+    }
+    return response.data;
+}
+
+/**
+ * Ignore error for an API or data call.
+ */
+export async function ignoreDataThrownError<T>(promise: Promise<T>): Promise<T | null> {
+    try {
+        return await promise;
+    } catch (error) {
+        getExposableError(error as Error);
+        return null;
+    }
+}
+
+/**
+ * Ignore all errors for an API or data call.
+ */
+export async function ignoreAllThrownError<T>(promise: Promise<T>): Promise<T | null> {
+    try {
+        return await promise;
+    } catch (error) {
+        console.warn('Ignoring error', error);
+        return null;
+    }
+}
+
+/**
+ * Wrap an async execution to handle errors and return a DataFetcherResponse.
+ */
+export async function wrapDataFetcherError<T>(
+    fn: () => Promise<T>
+): Promise<DataFetcherResponse<T>> {
+    try {
+        return { data: await fn() };
+    } catch (error) {
+        return {
+            error: getExposableError(error as Error),
+        };
+    }
+}
+
+/**
+ * Get a data fetcher exposable error from a JS error.
+ */
+export function getExposableError(error: Error): DataFetcherErrorData {
+    if (error instanceof GitBookAPIError) {
+        if (error.code >= 500) {
+            throw error;
+        }
+
+        return {
+            code: error.code,
+            message: error.errorMessage,
+        };
+    }
+
+    if (error instanceof DataFetcherError) {
+        if (error.code >= 500) {
+            throw error;
+        }
+
+        return {
+            code: error.code,
+            message: error.message,
+        };
+    }
+
+    throw error;
+}

packages/gitbook-v2/src/lib/data/index.ts

@@ -1,4 +1,8 @@
 export * from './api';
 export * from './types';
-export * from './utils';
+export * from './pages';
 export * from './urls';
+export * from './errors';
+export * from './lookup';
+export * from './proxy';
+export * from './visitor';

packages/gitbook-v2/src/lib/data/lookup.ts

@@ -0,0 +1,187 @@
+import { race, tryCatch } from '@/lib/async';
+import { joinPath, joinPathWithBaseURL } from '@/lib/paths';
+import { trace } from '@/lib/tracing';
+import type { GitBookAPI, PublishedSiteContentLookup, SiteVisitorPayload } from '@gitbook/api';
+import { apiClient } from './api';
+import { getExposableError } from './errors';
+import type { DataFetcherResponse } from './types';
+import { getURLLookupAlternatives, stripURLSearch } from './urls';
+
+interface LookupPublishedContentByUrlInput {
+    url: string;
+    redirectOnError: boolean;
+    apiToken: string | null;
+    visitorPayload: SiteVisitorPayload;
+}
+
+/**
+ * Lookup a content by its URL using the GitBook resolvePublishedContentByUrl API endpoint.
+ * To optimize caching, we try multiple lookup alternatives and return the first one that matches.
+ */
+export async function resolvePublishedContentByUrl(input: LookupPublishedContentByUrlInput) {
+    return lookupPublishedContentByUrl({
+        url: input.url,
+        fetchLookupAPIResult: ({ url, signal }) => {
+            const api = apiClient({ apiToken: input.apiToken });
+            return trace(
+                {
+                    operation: 'resolvePublishedContentByUrl',
+                    name: url,
+                },
+                () =>
+                    tryCatch(
+                        api.urls.resolvePublishedContentByUrl(
+                            {
+                                url,
+                                ...(input.visitorPayload ? { visitor: input.visitorPayload } : {}),
+                                redirectOnError: input.redirectOnError,
+                            },
+                            { signal }
+                        )
+                    )
+            );
+        },
+    });
+}
+
+/**
+ * Lookup a content by its URL using the GitBook getPublishedContentByUrl API endpoint.
+ * To optimize caching, we try multiple lookup alternatives and return the first one that matches.
+ *
+ * @deprecated use resolvePublishedContentByUrl.
+ *
+ */
+export async function getPublishedContentByURL(input: LookupPublishedContentByUrlInput) {
+    return lookupPublishedContentByUrl({
+        url: input.url,
+        fetchLookupAPIResult: ({ url, signal }) => {
+            const api = apiClient({ apiToken: input.apiToken });
+            return trace(
+                {
+                    operation: 'getPublishedContentByURL',
+                    name: url,
+                },
+                () =>
+                    tryCatch(
+                        api.urls.getPublishedContentByUrl(
+                            {
+                                url,
+                                visitorAuthToken: input.visitorPayload.jwtToken ?? undefined,
+                                redirectOnError: input.redirectOnError,
+                                // @ts-expect-error - cacheVersion is not a real query param
+                                cacheVersion: 'v2',
+                            },
+                            { signal }
+                        )
+                    )
+            );
+        },
+    });
+}
+
+type TryCatch<T> = ReturnType<typeof tryCatch<T>>;
+
+async function lookupPublishedContentByUrl(input: {
+    url: string;
+    fetchLookupAPIResult: (args: {
+        url: string;
+        signal: AbortSignal;
+    }) => TryCatch<Awaited<ReturnType<GitBookAPI['urls']['resolvePublishedContentByUrl']>>>;
+}): Promise<DataFetcherResponse<PublishedSiteContentLookup>> {
+    const lookupURL = new URL(input.url);
+    const url = stripURLSearch(lookupURL);
+    const lookup = getURLLookupAlternatives(url);
+
+    const result = await race(lookup.urls, async (alternative, { signal }) => {
+        const callResult = await input.fetchLookupAPIResult({
+            url: alternative.url,
+            signal,
+        });
+
+        if (callResult.error) {
+            if (alternative.primary) {
+                // We only return an error for the primary alternative (full URL),
+                // as other parts could result in errors due to the URL being incomplete (share links, etc).
+                return { error: callResult.error };
+            }
+            return null;
+        }
+
+        const {
+            data: { data },
+        } = callResult;
+
+        if ('redirect' in data) {
+            if (alternative.primary) {
+                // Append the path to the redirect URL
+                // because we might have matched a shorter path and the redirect is relative to it
+                if (alternative.extraPath) {
+                    if (data.target === 'content') {
+                        const redirect = new URL(data.redirect);
+                        redirect.pathname = joinPath(redirect.pathname, alternative.extraPath);
+                        data.redirect = redirect.toString();
+                    } else {
+                        const redirect = new URL(data.redirect);
+                        if (redirect.searchParams.has('location')) {
+                            redirect.searchParams.set(
+                                'location',
+                                joinPath(
+                                    redirect.searchParams.get('location') ?? '',
+                                    alternative.extraPath
+                                )
+                            );
+                            data.redirect = redirect.toString();
+                        }
+                    }
+                }
+
+                return { data };
+            }
+
+            return null;
+        }
+
+        /**
+         * We use the following criteria to determine if the lookup result is the right one:
+         * - the primary alternative was resolved (because that's the longest or most inclusive path)
+         * - the resolution of the site URL is complete (because we want to resolve the deepest path possible)
+         *
+         * In both cases, the idea is to use the deepest/longest/most inclusive path to resolve the content.
+         */
+        if (alternative.primary || ('site' in data && data.complete)) {
+            const changeRequest = data.changeRequest ?? lookup.changeRequest;
+            const revision = data.revision ?? lookup.revision;
+
+            const siteResult: PublishedSiteContentLookup = {
+                ...data,
+                canonicalUrl: joinPathWithBaseURL(data.canonicalUrl, alternative.extraPath),
+                basePath: joinPath(data.basePath, lookup.basePath ?? ''),
+                pathname: joinPath(data.pathname, alternative.extraPath),
+                ...(changeRequest ? { changeRequest } : {}),
+                ...(revision ? { revision } : {}),
+            };
+            return { data: siteResult };
+        }
+
+        return null;
+    });
+
+    if (!result) {
+        return {
+            error: {
+                code: 404,
+                message: 'No content found',
+            },
+        };
+    }
+
+    if (result.error) {
+        return {
+            error: getExposableError(result.error),
+        };
+    }
+
+    return {
+        data: result.data,
+    };
+}

packages/gitbook-v2/src/lib/data/memoize.test.ts

@@ -0,0 +1,52 @@
+import { describe, expect, it, mock } from 'bun:test';
+import { AsyncLocalStorage } from 'node:async_hooks';
+import { withCacheKey, withoutConcurrentExecution } from './memoize';
+
+describe('withoutConcurrentExecution', () => {
+    it('should memoize the function based on the cache key', async () => {
+        const fn = mock(async (_cacheKey: string, a: number, b: number) => a + b);
+        const memoized = withoutConcurrentExecution(() => null, fn);
+
+        const p1 = memoized('c1', 1, 2);
+        const p2 = memoized('c1', 1, 2);
+        const p3 = memoized('c3', 2, 3);
+
+        expect(await p1).toBe(await p2);
+        expect(await p1).not.toBe(await p3);
+        expect(fn.mock.calls.length).toBe(2);
+    });
+
+    it('should support caching per request', async () => {
+        const fn = mock(async () => Math.random());
+
+        const request1 = { id: 'request1' };
+        const request2 = { id: 'request2' };
+
+        const requestContext = new AsyncLocalStorage<{ id: string }>();
+
+        const memoized = withoutConcurrentExecution(() => requestContext.getStore(), fn);
+
+        // Both in the same request
+        const promise1 = requestContext.run(request1, () => memoized('c1'));
+        const promise2 = requestContext.run(request1, () => memoized('c1'));
+
+        // In a different request
+        const promise3 = requestContext.run(request2, () => memoized('c1'));
+
+        expect(await promise1).toBe(await promise2);
+        expect(await promise1).not.toBe(await promise3);
+        expect(fn.mock.calls.length).toBe(2);
+    });
+});
+
+describe('withCacheKey', () => {
+    it('should wrap the function by passing the cache key', async () => {
+        const fn = mock(
+            async (cacheKey: string, arg: { a: number; b: number }, c: number) =>
+                `${cacheKey}, result=${arg.a + arg.b + c}`
+        );
+        const memoized = withCacheKey(fn);
+        expect(await memoized({ a: 1, b: 2 }, 4)).toBe('[[["a",1],["b",2]],4], result=7');
+        expect(fn.mock.calls.length).toBe(1);
+    });
+});

packages/gitbook-v2/src/lib/data/memoize.ts

@@ -0,0 +1,87 @@
+/**
+ * Wrap a function by preventing concurrent executions of the same function.
+ * With a logic to work per-request in Cloudflare Workers.
+ */
+export function withoutConcurrentExecution<ArgsType extends any[], ReturnType>(
+    getGlobalContext: () => object | null | undefined,
+    wrapped: (key: string, ...args: ArgsType) => Promise<ReturnType>
+): (cacheKey: string, ...args: ArgsType) => Promise<ReturnType> {
+    const globalPromiseCache = new WeakMap<object, Map<string, Promise<ReturnType>>>();
+
+    return (key: string, ...args: ArgsType) => {
+        const globalContext = getGlobalContext() ?? globalThis;
+
+        /**
+         * Cache storage that is scoped to the current request when executed in Cloudflare Workers,
+         * to avoid "Cannot perform I/O on behalf of a different request" errors.
+         */
+        const promiseCache =
+            globalPromiseCache.get(globalContext) ?? new Map<string, Promise<ReturnType>>();
+        globalPromiseCache.set(globalContext, promiseCache);
+
+        const concurrent = promiseCache.get(key);
+        if (concurrent) {
+            return concurrent;
+        }
+
+        const promise = (async () => {
+            try {
+                const result = await wrapped(key, ...args);
+                return result;
+            } finally {
+                promiseCache.delete(key);
+            }
+        })();
+
+        promiseCache.set(key, promise);
+
+        return promise;
+    };
+}
+
+/**
+ * Wrap a function by passing it a cache key that is computed from the function arguments.
+ */
+export function withCacheKey<ArgsType extends any[], ReturnType>(
+    wrapped: (cacheKey: string, ...args: ArgsType) => Promise<ReturnType>
+): (...args: ArgsType) => Promise<ReturnType> {
+    return (...args: ArgsType) => {
+        const cacheKey = getCacheKey(args);
+        return wrapped(cacheKey, ...args);
+    };
+}
+
+/**
+ * Compute a cache key from the function arguments.
+ */
+function getCacheKey(args: any[]) {
+    return JSON.stringify(deepSortValue(args));
+}
+
+function deepSortValue(value: unknown): unknown {
+    if (
+        typeof value === 'string' ||
+        typeof value === 'number' ||
+        typeof value === 'boolean' ||
+        value === null ||
+        value === undefined
+    ) {
+        return value;
+    }
+
+    if (Array.isArray(value)) {
+        return value.map(deepSortValue);
+    }
+
+    if (value && typeof value === 'object') {
+        return Object.entries(value)
+            .map(([key, subValue]) => {
+                return [key, deepSortValue(subValue)] as const;
+            })
+            .sort((a, b) => {
+                return a[0].localeCompare(b[0]);
+            });
+    }
+
+    return value;
+}

packages/gitbook-v2/src/lib/data/pages.ts

@@ -0,0 +1,30 @@
+import type { JSONDocument, RevisionPageDocument, Space } from '@gitbook/api';
+import { getDataOrNull } from './errors';
+import type { GitBookDataFetcher } from './types';
+
+/**
+ * Get the document for a page.
+ */
+export async function getPageDocument(
+    dataFetcher: GitBookDataFetcher,
+    space: Space,
+    page: RevisionPageDocument
+): Promise<JSONDocument | null> {
+    if (page.documentId) {
+        return getDataOrNull(
+            dataFetcher.getDocument({ spaceId: space.id, documentId: page.documentId })
+        );
+    }
+    if ('computed' in page && page.computed) {
+        return getDataOrNull(
+            dataFetcher.getComputedDocument({
+                organizationId: space.organization,
+                spaceId: space.id,
+                source: page.computed,
+                seed: page.computedSeed,
+            })
+        );
+    }
+
+    return null;
+}

packages/gitbook-v2/src/lib/data/proxy.test.ts

@@ -0,0 +1,21 @@
+import { describe, expect, it } from 'bun:test';
+import { getProxyRequestIdentifier, isProxyRequest } from './proxy';
+
+describe('isProxyRequest', () => {
+    it('should return true for proxy requests', () => {
+        const proxyRequestURL = new URL('https://proxy.gitbook.site/sites/site_foo/hello/world');
+        expect(isProxyRequest(proxyRequestURL)).toBe(true);
+    });
+
+    it('should return false for non-proxy requests', () => {
+        const nonProxyRequestURL = new URL('https://example.com/docs/foo/hello/world');
+        expect(isProxyRequest(nonProxyRequestURL)).toBe(false);
+    });
+});
+
+describe('getProxyRequestIdentifier', () => {
+    it('should return the correct identifier for proxy requests', () => {
+        const proxyRequestURL = new URL('https://proxy.gitbook.site/sites/site_foo/hello/world');
+        expect(getProxyRequestIdentifier(proxyRequestURL)).toBe('sites/site_foo');
+    });
+});

packages/gitbook-v2/src/lib/data/proxy.ts

@@ -0,0 +1,15 @@
+/**
+ * Check if the request to the site was through a proxy.
+ */
+export function isProxyRequest(requestURL: URL): boolean {
+    return (
+        requestURL.host === 'proxy.gitbook.site' || requestURL.host === 'proxy.gitbook-staging.site'
+    );
+}
+
+export function getProxyRequestIdentifier(requestURL: URL): string {
+    // For proxy requests, we extract the site ID from the pathname
+    // e.g. https://proxy.gitbook.site/site/siteId/...
+    const pathname = requestURL.pathname.slice(1).split('/');
+    return pathname.slice(0, 2).join('/');
+}

packages/gitbook-v2/src/lib/data/types.ts

@@ -1,28 +1,41 @@
 import type * as api from '@gitbook/api';
 
+export type DataFetcherErrorData = {
+    code: number;
+    message: string;
+};
+
+export type DataFetcherResponse<T> =
+    | {
+          data: T;
+          error?: undefined;
+      }
+    | {
+          error: DataFetcherErrorData;
+          data?: undefined;
+      };
+
 /**
  * Generic fetcher for GitBook data.
  * It is used between v1 and v2.
  */
 export interface GitBookDataFetcher {
     /**
-     * Endpoint of the API.
+     * Get an API client for the current context.
      */
-    apiEndpoint: string;
+    api(): Promise<api.GitBookAPI>;
+
+    /**
+     * Create a data fetcher authenticated with a specific token.
+     */
+    withToken(input: {
+        apiToken: string;
+    }): GitBookDataFetcher;
 
     /**
      * Get a user by its ID.
      */
-    getUserById(userId: string): Promise<api.User | null>;
-
-    /**
-     * Get a published content by its URL.
-     */
-    getPublishedContentByUrl(params: {
-        url: string;
-        visitorAuthToken: string | null;
-        redirectOnError: boolean;
-    }): Promise<api.PublishedSiteContentLookup>;
+    getUserById(userId: string): Promise<DataFetcherResponse<api.User>>;
 
     /**
      * Get a published content site by its organization ID and site ID.
@@ -31,12 +44,14 @@ export interface GitBookDataFetcher {
         organizationId: string;
         siteId: string;
         siteShareKey: string | undefined;
-    }): Promise<api.PublishedContentSite>;
+    }): Promise<DataFetcherResponse<api.PublishedContentSite>>;
 
     /**
      * Get a space by its ID.
      */
-    getSpace(params: { spaceId: string; shareKey: string | undefined }): Promise<api.Space>;
+    getSpace(params: { spaceId: string; shareKey: string | undefined }): Promise<
+        DataFetcherResponse<api.Space>
+    >;
 
     /**
      * Get a change request by its space ID and change request ID.
@@ -44,7 +59,7 @@ export interface GitBookDataFetcher {
     getChangeRequest(params: {
         spaceId: string;
         changeRequestId: string;
-    }): Promise<api.ChangeRequest | null>;
+    }): Promise<DataFetcherResponse<api.ChangeRequest>>;
 
     /**
      * Get the revision by its space ID and revision ID.
@@ -53,7 +68,7 @@ export interface GitBookDataFetcher {
         spaceId: string;
         revisionId: string;
         metadata: boolean;
-    }): Promise<api.Revision>;
+    }): Promise<DataFetcherResponse<api.Revision>>;
 
     /**
      * Get the revision pages by its space ID and revision ID.
@@ -62,7 +77,7 @@ export interface GitBookDataFetcher {
         spaceId: string;
         revisionId: string;
         metadata: boolean;
-    }): Promise<api.RevisionPage[]>;
+    }): Promise<DataFetcherResponse<api.RevisionPage[]>>;
 
     /**
      * Get a revision file by its space ID, revision ID and file ID.
@@ -71,7 +86,7 @@ export interface GitBookDataFetcher {
         spaceId: string;
         revisionId: string;
         fileId: string;
-    }): Promise<api.RevisionFile | null>;
+    }): Promise<DataFetcherResponse<api.RevisionFile>>;
 
     /**
      * Get a revision page by its path.
@@ -80,20 +95,33 @@ export interface GitBookDataFetcher {
         spaceId: string;
         revisionId: string;
         path: string;
-    }): Promise<api.RevisionPageDocument | api.RevisionPageGroup | null>;
+    }): Promise<DataFetcherResponse<api.RevisionPageDocument | api.RevisionPageGroup>>;
+
+    /**
+     * Get the markdown content of a page by its path.
+     */
+    getRevisionPageMarkdown(params: {
+        spaceId: string;
+        revisionId: string;
+        pageId: string;
+    }): Promise<DataFetcherResponse<string>>;
 
     /**
      * Get a document by its space ID and document ID.
      */
-    getDocument(params: { spaceId: string; documentId: string }): Promise<api.JSONDocument>;
+    getDocument(params: { spaceId: string; documentId: string }): Promise<
+        DataFetcherResponse<api.JSONDocument>
+    >;
 
     /**
      * Get a computed document by its space ID and computed source.
      */
     getComputedDocument(params: {
+        organizationId: string;
         spaceId: string;
         source: api.ComputedContentSource;
-    }): Promise<api.JSONDocument>;
+        seed: string;
+    }): Promise<DataFetcherResponse<api.JSONDocument>>;
 
     /**
      * Get a reusable content by its space ID, revision ID and reusable content ID.
@@ -102,7 +130,7 @@ export interface GitBookDataFetcher {
         spaceId: string;
         revisionId: string;
         reusableContentId: string;
-    }): Promise<api.RevisionReusableContent | null>;
+    }): Promise<DataFetcherResponse<api.RevisionReusableContent>>;
 
     /**
      * Get the latest OpenAPI spec version content by its organization ID and slug.
@@ -110,7 +138,7 @@ export interface GitBookDataFetcher {
     getLatestOpenAPISpecVersionContent(params: {
         organizationId: string;
         slug: string;
-    }): Promise<api.OpenAPISpecContent | null>;
+    }): Promise<DataFetcherResponse<api.OpenAPISpecContent>>;
 
     /**
      * Get a site redirect by its source path.
@@ -120,10 +148,46 @@ export interface GitBookDataFetcher {
         siteId: string;
         siteShareKey: string | undefined;
         source: string;
-    }): Promise<{ redirect: api.SiteRedirect | null; target: string } | null>;
+    }): Promise<DataFetcherResponse<{ redirect: api.SiteRedirect | null; target: string }>>;
 
     /**
      * Get an embed by its URL.
      */
-    getEmbedByUrl(params: { url: string; spaceId: string }): Promise<api.Embed>;
+    getEmbedByUrl(params: { url: string; spaceId: string }): Promise<
+        DataFetcherResponse<api.Embed>
+    >;
+
+    /**
+     * Search content in a site.
+     */
+    searchSiteContent(params: {
+        organizationId: string;
+        siteId: string;
+        query: string;
+        scope:
+            | { mode: 'all' }
+            | { mode: 'current'; siteSpaceId: string }
+            | { mode: 'specific'; siteSpaceIds: string[] };
+        /** Cache bust to ensure the search results are fresh when the space is updated. */
+        cacheBust?: string;
+    }): Promise<DataFetcherResponse<api.SearchSpaceResult[]>>;
+
+    /**
+     * Render an integration UI.
+     */
+    renderIntegrationUi(params: {
+        integrationName: string;
+        request: api.RenderIntegrationUI;
+    }): Promise<DataFetcherResponse<api.ContentKitRenderOutput>>;
+
+    /**
+     * Stream an AI response.
+     */
+    streamAIResponse(params: {
+        organizationId: string;
+        siteId: string;
+        input: api.AIMessageInput[];
+        output: api.AIOutputFormat;
+        model: api.AIModel;
+    }): AsyncGenerator<api.AIStreamResponse, void, unknown>;
 }

packages/gitbook-v2/src/lib/data/urls.ts

@@ -1,121 +1,3 @@
-import { race, tryCatch } from '@/lib/async';
-import { joinPath } from '@/lib/paths';
-import { GitBookAPI, type GitBookAPIError, type PublishedSiteContentLookup } from '@gitbook/api';
-import { GITBOOK_API_TOKEN, GITBOOK_API_URL, GITBOOK_USER_AGENT } from '@v2/lib/env';
-
-/**
- * Lookup a content by its URL using the GitBook API.
- * To optimize caching, we try multiple lookup alternatives and return the first one that matches.
- */
-export async function getPublishedContentByURL(input: {
-    url: string;
-    visitorAuthToken: string | null;
-    redirectOnError: boolean;
-}): Promise<
-    | { data: PublishedSiteContentLookup; error?: undefined }
-    | { data?: undefined; error: Error | GitBookAPIError }
-> {
-    const lookupURL = new URL(input.url);
-    const url = stripURLSearch(lookupURL);
-    const lookup = getURLLookupAlternatives(url);
-
-    const result = await race(lookup.urls, async (alternative, { signal }) => {
-        const api = new GitBookAPI({
-            authToken: GITBOOK_API_TOKEN ?? undefined,
-            endpoint: GITBOOK_API_URL,
-            userAgent: GITBOOK_USER_AGENT,
-        });
-
-        const callResult = await tryCatch(
-            api.urls.getPublishedContentByUrl(
-                {
-                    url: alternative.url,
-                    visitorAuthToken: input.visitorAuthToken ?? undefined,
-                    redirectOnError: input.redirectOnError,
-                    cache: true,
-                },
-                {
-                    signal,
-                    headers: {
-                        'x-gitbook-force-cache': 'true',
-                    },
-                }
-            )
-        );
-
-        if (callResult.error) {
-            if (alternative.primary) {
-                // We only return an error for the primary alternative (full URL),
-                // as other parts could result in errors due to the URL being incomplete (share links, etc).
-                return { error: callResult.error };
-            }
-            return null;
-        }
-
-        const {
-            data: { data },
-        } = callResult;
-
-        if ('redirect' in data) {
-            if (alternative.primary) {
-                // Append the path to the redirect URL
-                // because we might have matched a shorter path and the redirect is relative to it
-                if (alternative.extraPath) {
-                    if (data.target === 'content') {
-                        const redirect = new URL(data.redirect);
-                        redirect.pathname = joinPath(redirect.pathname, alternative.extraPath);
-                        data.redirect = redirect.toString();
-                    } else {
-                        const redirect = new URL(data.redirect);
-                        if (redirect.searchParams.has('location')) {
-                            redirect.searchParams.set(
-                                'location',
-                                joinPath(
-                                    redirect.searchParams.get('location') ?? '',
-                                    alternative.extraPath
-                                )
-                            );
-                            data.redirect = redirect.toString();
-                        }
-                    }
-                }
-
-                return { data };
-            }
-
-            return null;
-        }
-
-        /**
-         * We use the following criteria to determine if the lookup result is the right one:
-         * - the primary alternative was resolved (because that's the longest or most inclusive path)
-         * - the resolution of the site URL is complete (because we want to resolve the deepest path possible)
-         *
-         * In both cases, the idea is to use the deepest/longest/most inclusive path to resolve the content.
-         */
-        if (alternative.primary || ('site' in data && data.complete)) {
-            const siteResult: PublishedSiteContentLookup = {
-                ...data,
-                changeRequest: data.changeRequest ?? lookup.changeRequest,
-                revision: data.revision ?? lookup.revision,
-                basePath: joinPath(data.basePath, lookup.basePath ?? ''),
-                pathname: joinPath(data.pathname, alternative.extraPath),
-            };
-            return { data: siteResult };
-        }
-
-        return null;
-    });
-
-    if (!result) {
-        return {
-            error: new Error('No content found'),
-        };
-    }
-
-    return result;
-}
-
 /**
  * For a given GitBook URL, return a list of alternative URLs that could be matched against to lookup the content.
  * The approach is optimized to aim at reusing cached lookup results as much as possible.

packages/gitbook-v2/src/lib/data/utils.ts

@@ -1,20 +0,0 @@
-import type { RevisionPageDocument } from '@gitbook/api';
-import type { GitBookDataFetcher } from './types';
-
-/**
- * Get the document for a page.
- */
-export async function getPageDocument(
-    dataFetcher: GitBookDataFetcher,
-    spaceId: string,
-    page: RevisionPageDocument
-) {
-    if (page.documentId) {
-        return dataFetcher.getDocument({ spaceId, documentId: page.documentId });
-    }
-    if (page.computed) {
-        return dataFetcher.getComputedDocument({ spaceId, source: page.computed });
-    }
-
-    return null;
-}

packages/gitbook-v2/src/lib/data/visitor.test.ts

@@ -0,0 +1,41 @@
+import { describe, expect, it } from 'bun:test';
+import { getVisitorAuthBasePath } from './visitor';
+
+describe('getVisitorAuthBasePath', () => {
+    it('should return the correct base path for proxy requests', () => {
+        expect(
+            getVisitorAuthBasePath(
+                new URL('https://proxy.gitbook.site/sites/site_foo/hello/world'),
+                {
+                    site: 'site_foo',
+                    siteSpace: 'sitesp_foo',
+                    basePath: '/foo',
+                    siteBasePath: '/foo',
+                    organization: 'org_foo',
+                    space: 'space_foo',
+                    pathname: '/hello/world',
+                    complete: false,
+                    apiToken: 'api_token_foo',
+                    canonicalUrl: 'https://example.com/docs/foo/hello/world',
+                }
+            )
+        ).toBe('/sites/site_foo/');
+    });
+
+    it('should return the correct base path for non-proxy requests', () => {
+        expect(
+            getVisitorAuthBasePath(new URL('https://example.com/docs/foo/hello/world'), {
+                site: 'site_foo',
+                siteSpace: 'sitesp_foo',
+                basePath: '/foo/',
+                siteBasePath: '/foo/',
+                organization: 'org_foo',
+                space: 'space_foo',
+                pathname: '/hello/world',
+                complete: false,
+                apiToken: 'api_token_foo',
+                canonicalUrl: 'https://example.com/docs/foo/hello/world',
+            })
+        ).toBe('/foo/');
+    });
+});

packages/gitbook-v2/src/lib/data/visitor.ts

@@ -0,0 +1,19 @@
+import { withLeadingSlash, withTrailingSlash } from '@/lib/paths';
+import type { PublishedSiteContent } from '@gitbook/api';
+import { getProxyRequestIdentifier, isProxyRequest } from './proxy';
+
+/**
+ * Get the appropriate base path for the visitor authentication cookie.
+ */
+export function getVisitorAuthBasePath(
+    siteRequestURL: URL,
+    siteURLData: PublishedSiteContent
+): string {
+    // The siteRequestURL for proxy requests is of the form `https://proxy.gitbook.com/site/siteId/...`
+    // In such cases, we should not use the resolved siteBasePath for the cookie because for subsequent requests
+    // we will not have the siteBasePath in the request URL in order to retrieve the cookie. So we use the
+    // proxy identifier instead.
+    return isProxyRequest(siteRequestURL)
+        ? withLeadingSlash(withTrailingSlash(getProxyRequestIdentifier(siteRequestURL)))
+        : siteURLData.siteBasePath;
+}

packages/gitbook-v2/src/lib/env.ts

@@ -1,60 +0,0 @@
-/**
- * Main host on which GitBook is running.
- */
-export const GITBOOK_URL =
-    process.env.NODE_ENV === 'development'
-        ? 'http://localhost:3000'
-        : ((process.env.VERCEL_URL ? `https://${process.env.VERCEL_URL}` : undefined) ??
-          process.env.GITBOOK_URL ??
-          '');
-
-/**
- * URL at which static assets are served.
- */
-export const GITBOOK_ASSETS_URL =
-    process.env.NODE_ENV === 'development'
-        ? 'http://localhost:3000'
-        : (process.env.GITBOOK_ASSETS_PREFIX ?? GITBOOK_URL);
-
-/**
- * GitBook app URL.
- */
-export const GITBOOK_APP_URL = process.env.NEXT_PUBLIC_GITBOOK_APP_URL ?? 'https://app.gitbook.com';
-
-/**
- * Default GitBook API URL endpoint.
- */
-export const GITBOOK_API_URL = process.env.GITBOOK_API_URL ?? 'https://api.gitbook.com';
-
-/**
- * Default GitBook API token.
- * It can be use to avoid rate-limiting.
- */
-export const GITBOOK_API_TOKEN = process.env.GITBOOK_API_TOKEN ?? null;
-
-/**
- * User agent to use for API requests.
- */
-export const GITBOOK_USER_AGENT = process.env.GITBOOK_USER_AGENT ?? 'GitBook-Open/2.0.0';
-
-/**
- * Whether to disable tracking of events into site insights.
- * This is used to disable tracking in development mode.
- */
-export const GITBOOK_DISABLE_TRACKING = Boolean(
-    !!process.env.GITBOOK_DISABLE_TRACKING || process.env.NODE_ENV !== 'production'
-);
-
-/**
- * Hostname serving the integrations.
- */
-export const GITBOOK_INTEGRATIONS_HOST =
-    process.env.GITBOOK_INTEGRATIONS_HOST ?? 'integrations.gitbook.com';
-
-/**
- * Endpoint to use for resizing images.
- * It should be a Cloudflare domain with image resizing enabled.
- */
-export const GITBOOK_IMAGE_RESIZE_URL = process.env.GITBOOK_IMAGE_RESIZE_URL ?? null;
-export const GITBOOK_IMAGE_RESIZE_SIGNING_KEY =
-    process.env.GITBOOK_IMAGE_RESIZE_SIGNING_KEY ?? null;

packages/gitbook-v2/src/lib/env/globals.ts

@@ -0,0 +1,120 @@
+import 'server-only';
+
+/*
+ * Support both Cloudflare and Vercel, environment variables can be bundled.
+ * To avoid leaking them on the client-side, they should be accessed from this file
+ * and not from the `process.env` object.
+ */
+
+/**
+ * Runtime environment.
+ */
+export const GITBOOK_RUNTIME = (process.env.GITBOOK_RUNTIME ?? 'unknown') as
+    | 'vercel'
+    | 'cloudflare'
+    | 'unknown';
+
+/**
+ * Main host on which GitBook is running.
+ */
+export const GITBOOK_URL =
+    process.env.NODE_ENV === 'development'
+        ? 'http://localhost:3000'
+        : (process.env.GITBOOK_URL ??
+          (process.env.VERCEL_URL ? `https://${process.env.VERCEL_URL}` : undefined) ??
+          '');
+
+/**
+ * URL at which static assets are served.
+ */
+export const GITBOOK_ASSETS_URL =
+    process.env.NODE_ENV === 'development'
+        ? 'http://localhost:3000'
+        : process.env.GITBOOK_ASSETS_PREFIX;
+
+/**
+ * GitBook app URL.
+ */
+export const GITBOOK_APP_URL = process.env.GITBOOK_APP_URL || 'https://app.gitbook.com';
+
+/**
+ * Default GitBook API URL endpoint.
+ */
+export const GITBOOK_API_URL = process.env.GITBOOK_API_URL || 'https://api.gitbook.com';
+
+/**
+ * Default GitBook API URL endpoint, to be shared with the client.
+ */
+export const GITBOOK_API_PUBLIC_URL = process.env.GITBOOK_API_PUBLIC_URL || GITBOOK_API_URL;
+
+/**
+ * Default GitBook API token.
+ * It can be use to avoid rate-limiting.
+ */
+export const GITBOOK_API_TOKEN = process.env.GITBOOK_API_TOKEN || null;
+
+/**
+ * User agent to use for API requests.
+ */
+export const GITBOOK_USER_AGENT = process.env.GITBOOK_USER_AGENT || 'GitBook-Open/2.0.0';
+
+/**
+ * Whether to disable tracking of events into site insights.
+ * This is used to disable tracking in development mode.
+ */
+export const GITBOOK_DISABLE_TRACKING = Boolean(
+    !!process.env.GITBOOK_DISABLE_TRACKING || process.env.NODE_ENV !== 'production'
+);
+
+/**
+ * Hostname serving the integrations.
+ */
+export const GITBOOK_INTEGRATIONS_HOST =
+    process.env.GITBOOK_INTEGRATIONS_HOST || 'integrations.gitbook.com';
+
+/**
+ * Hostname for fonts.
+ */
+export const GITBOOK_FONTS_URL = process.env.GITBOOK_FONTS_URL || 'https://fonts.gitbook.com';
+
+/**
+ * Endpoint to use for resizing images.
+ * It should be a Cloudflare domain with image resizing enabled.
+ */
+export const GITBOOK_IMAGE_RESIZE_URL = process.env.GITBOOK_IMAGE_RESIZE_URL ?? null;
+export const GITBOOK_IMAGE_RESIZE_SIGNING_KEY =
+    process.env.GITBOOK_IMAGE_RESIZE_SIGNING_KEY ?? null;
+
+/**
+ * Mode used for resizing images.
+ */
+export const GITBOOK_IMAGE_RESIZE_MODE = enforceEnum(
+    'GITBOOK_IMAGE_RESIZE_MODE',
+    process.env.GITBOOK_IMAGE_RESIZE_MODE || 'cdn-cgi',
+    ['cdn-cgi', 'cf-fetch']
+);
+
+/**
+ * Endpoint where icons are served.
+ */
+export const GITBOOK_ICONS_URL =
+    process.env.GITBOOK_ICONS_URL || `${GITBOOK_ASSETS_URL || ''}/~gitbook/static/icons`;
+
+/**
+ * Token passed to the icons endpoint.
+ */
+export const GITBOOK_ICONS_TOKEN = process.env.GITBOOK_ICONS_TOKEN;
+
+/**
+ * Secret used to validate requests from the GitBook app.
+ */
+export const GITBOOK_SECRET = process.env.GITBOOK_SECRET ?? null;
+
+function enforceEnum<T extends string>(key: string, value: string, enumValues: T[]): T {
+    if (!enumValues.includes(value as T)) {
+        throw new Error(
+            `Invalid value for ${key}: "${value}", expected one of: ${enumValues.join(', ')}`
+        );
+    }
+    return value as T;
+}

packages/gitbook-v2/src/lib/env/index.ts

@@ -0,0 +1,2 @@
+export * from './globals';
+export * from './urls';

packages/gitbook-v2/src/lib/env/urls.ts

@@ -0,0 +1,45 @@
+import { GITBOOK_ASSETS_URL, GITBOOK_URL } from './globals';
+
+/**
+ * Check if the URL is a GitBook host URL.
+ */
+export function isGitBookHostURL(input: URL | string): boolean {
+    const url = typeof input === 'string' ? new URL(input) : input;
+
+    if (!GITBOOK_URL) {
+        return false;
+    }
+
+    const gitbookHost = new URL(GITBOOK_URL).host;
+
+    if (url.host === gitbookHost) {
+        return true;
+    }
+
+    // Handle the Cloudflare preview URLs that are prefixed with a random hash
+    // https://developers.cloudflare.com/workers/configuration/previews/
+    if (url.host.endsWith(`-${gitbookHost}`)) {
+        return true;
+    }
+
+    return false;
+}
+
+/**
+ * Check if the URL is a GitBook assets host URL.
+ */
+export function isGitBookAssetsHostURL(input: URL | string): boolean {
+    const url = typeof input === 'string' ? new URL(input) : input;
+
+    if (!GITBOOK_ASSETS_URL) {
+        return false;
+    }
+
+    const gitbookAssetsHost = new URL(GITBOOK_ASSETS_URL).host;
+
+    if (url.host === gitbookAssetsHost) {
+        return true;
+    }
+
+    return false;
+}

packages/gitbook-v2/src/lib/images/checkIsSizableImageURL.test.ts

@@ -0,0 +1,81 @@
+import { describe, expect, it } from 'bun:test';
+import { SizableImageAction, checkIsSizableImageURL } from './checkIsSizableImageURL';
+
+describe('checkIsSizableImageURL', () => {
+    it('should return Skip for non-parsable URLs', () => {
+        expect(checkIsSizableImageURL('not a url')).toBe(SizableImageAction.Skip);
+    });
+
+    it('should return Skip for non-http(s) URLs', () => {
+        expect(checkIsSizableImageURL('data:image/png;base64,abc')).toBe(SizableImageAction.Skip);
+        expect(checkIsSizableImageURL('file:///path/to/image.jpg')).toBe(SizableImageAction.Skip);
+    });
+
+    it('should return Skip for localhost URLs', () => {
+        expect(checkIsSizableImageURL('http://localhost:3000/image.jpg')).toBe(
+            SizableImageAction.Skip
+        );
+        expect(checkIsSizableImageURL('https://localhost/image.png')).toBe(SizableImageAction.Skip);
+    });
+
+    it('should return Skip for GitBook image URLs', () => {
+        expect(checkIsSizableImageURL('https://example.com/~gitbook/image/test.jpg')).toBe(
+            SizableImageAction.Skip
+        );
+    });
+
+    it('should return Resize for supported image extensions', () => {
+        expect(checkIsSizableImageURL('https://example.com/image.jpg')).toBe(
+            SizableImageAction.Resize
+        );
+        expect(checkIsSizableImageURL('https://example.com/image.jpeg')).toBe(
+            SizableImageAction.Resize
+        );
+        expect(checkIsSizableImageURL('https://example.com/image.png')).toBe(
+            SizableImageAction.Resize
+        );
+        expect(checkIsSizableImageURL('https://example.com/image.gif')).toBe(
+            SizableImageAction.Resize
+        );
+        expect(checkIsSizableImageURL('https://example.com/image.webp')).toBe(
+            SizableImageAction.Resize
+        );
+    });
+
+    it('should return Resize for URLs without extensions', () => {
+        expect(checkIsSizableImageURL('https://example.com/image')).toBe(SizableImageAction.Resize);
+    });
+
+    it('should return Passthrough for unsupported image extensions', () => {
+        expect(checkIsSizableImageURL('https://example.com/image.svg')).toBe(
+            SizableImageAction.Passthrough
+        );
+        expect(checkIsSizableImageURL('https://example.com/image.bmp')).toBe(
+            SizableImageAction.Passthrough
+        );
+        expect(checkIsSizableImageURL('https://example.com/image.tiff')).toBe(
+            SizableImageAction.Passthrough
+        );
+        expect(checkIsSizableImageURL('https://example.com/image.ico')).toBe(
+            SizableImageAction.Passthrough
+        );
+    });
+
+    it('should handle URLs with query parameters correctly', () => {
+        expect(checkIsSizableImageURL('https://example.com/image.jpg?width=100')).toBe(
+            SizableImageAction.Resize
+        );
+        expect(checkIsSizableImageURL('https://example.com/image.svg?height=200')).toBe(
+            SizableImageAction.Passthrough
+        );
+    });
+
+    it('should be case-insensitive for extensions', () => {
+        expect(checkIsSizableImageURL('https://example.com/image.JPG')).toBe(
+            SizableImageAction.Resize
+        );
+        expect(checkIsSizableImageURL('https://example.com/image.PNG')).toBe(
+            SizableImageAction.Resize
+        );
+    });
+});

packages/gitbook-v2/src/lib/images/checkIsSizableImageURL.ts

@@ -0,0 +1,43 @@
+import { getExtension } from '@/lib/paths';
+
+export enum SizableImageAction {
+    Resize = 'resize',
+    Skip = 'skip',
+    Passthrough = 'passthrough',
+}
+
+/**
+ * https://developers.cloudflare.com/images/transform-images/#supported-input-formats
+ */
+const SUPPORTED_IMAGE_EXTENSIONS = ['.jpg', '.jpeg', '.png', '.gif', '.webp'];
+
+/**
+ * Check if an image URL is resizable.
+ * Skip it for non-http(s) URLs (data, etc).
+ * Skip it for SVGs.
+ * Skip it for GitBook images (to avoid recursion).
+ */
+export function checkIsSizableImageURL(input: string): SizableImageAction {
+    if (!URL.canParse(input)) {
+        return SizableImageAction.Skip;
+    }
+
+    const parsed = new URL(input);
+    if (parsed.protocol !== 'http:' && parsed.protocol !== 'https:') {
+        return SizableImageAction.Skip;
+    }
+    if (parsed.hostname === 'localhost') {
+        return SizableImageAction.Skip;
+    }
+    if (parsed.pathname.includes('/~gitbook/image')) {
+        return SizableImageAction.Skip;
+    }
+
+    const extension = getExtension(parsed.pathname).toLowerCase();
+    if (!extension || SUPPORTED_IMAGE_EXTENSIONS.includes(extension)) {
+        // If no extension, we consider it resizable.
+        return SizableImageAction.Resize;
+    }
+
+    return SizableImageAction.Passthrough;
+}

packages/gitbook-v2/src/lib/images/createImageResizer.ts

@@ -1,45 +1,22 @@
 import 'server-only';
-
 import { GITBOOK_IMAGE_RESIZE_SIGNING_KEY, GITBOOK_IMAGE_RESIZE_URL } from '../env';
-import type { GitBookSpaceLinker } from '../links';
+import type { GitBookLinker } from '../links';
+import { SizableImageAction, checkIsSizableImageURL } from './checkIsSizableImageURL';
+import { getImageSize } from './resizer';
 import { type SignatureVersion, generateImageSignature } from './signatures';
 import type { ImageResizer } from './types';
 
-interface CloudflareImageJsonFormat {
-    width: number;
-    height: number;
-    original: {
-        file_size: number;
-        width: number;
-        height: number;
-        format: string;
-    };
-}
-
-/**
- * https://developers.cloudflare.com/images/image-resizing/resize-with-workers/
- */
-export interface CloudflareImageOptions {
-    format?: 'webp' | 'avif' | 'json' | 'jpeg';
-    fit?: 'scale-down' | 'contain' | 'cover' | 'crop' | 'pad';
-    width?: number;
-    height?: number;
-    dpr?: number;
-    anim?: boolean;
-    quality?: number;
-}
-
 /**
  * Create an image resizer for a rendering context.
  */
 export function createImageResizer({
-    host,
+    imagesContextId,
     linker,
 }: {
     /** The linker to use to create URLs. */
-    linker: GitBookSpaceLinker;
-    /** The host name of the current site. */
-    host: string;
+    linker: GitBookLinker;
+    /** The site identifier to use for verifying the image signature. */
+    imagesContextId: string;
 }): ImageResizer {
     if (!GITBOOK_IMAGE_RESIZE_URL || !GITBOOK_IMAGE_RESIZE_SIGNING_KEY) {
         return createNoopImageResizer();
@@ -47,7 +24,7 @@ export function createImageResizer({
 
     return {
         getResizedImageURL: (urlInput) => {
-            if (!checkIsSizableImageURL(urlInput)) {
+            if (checkIsSizableImageURL(urlInput) === SizableImageAction.Skip) {
                 return null;
             }
 
@@ -58,37 +35,36 @@ export function createImageResizer({
 
             return async (options) => {
                 cachedSignature ??= await generateImageSignature({
-                    host,
+                    imagesContextId,
                     url: urlInput,
                 });
 
-                const url = new URL(
-                    linker.toAbsoluteURL(linker.toPathInContent('/~gitbook/image'))
-                );
-                url.searchParams.set('url', getImageAPIUrl(urlInput));
+                const url = linker.toAbsoluteURL(linker.toPathInSite('/~gitbook/image'));
+                const searchParams = new URLSearchParams();
+                searchParams.set('url', getImageAPIUrl(urlInput));
 
                 if (options.width) {
-                    url.searchParams.set('width', options.width.toString());
+                    searchParams.set('width', options.width.toString());
                 }
                 if (options.height) {
-                    url.searchParams.set('height', options.height.toString());
+                    searchParams.set('height', options.height.toString());
                 }
                 if (options.dpr) {
-                    url.searchParams.set('dpr', options.dpr.toString());
+                    searchParams.set('dpr', options.dpr.toString());
                 }
                 if (options.quality) {
-                    url.searchParams.set('quality', options.quality.toString());
+                    searchParams.set('quality', options.quality.toString());
                 }
 
-                url.searchParams.set('sign', cachedSignature.signature);
-                url.searchParams.set('sv', cachedSignature.version);
+                searchParams.set('sign', cachedSignature.signature);
+                searchParams.set('sv', cachedSignature.version);
 
-                return url.toString();
+                return `${url}?${searchParams.toString()}`;
             };
         },
 
         getImageSize: async (input, options) => {
-            if (!checkIsSizableImageURL(input)) {
+            if (checkIsSizableImageURL(input) !== SizableImageAction.Resize) {
                 return null;
             }
 
@@ -107,124 +83,6 @@ export function createNoopImageResizer(): ImageResizer {
     };
 }
 
-/**
- * Check if a URL is an HTTP URL.
- */
-export function checkIsHttpURL(input: string | URL): boolean {
-    if (!URL.canParse(input)) {
-        return false;
-    }
-    const parsed = new URL(input);
-    return parsed.protocol === 'http:' || parsed.protocol === 'https:';
-}
-
-/**
- * Check if an image URL is resizable.
- * Skip it for non-http(s) URLs (data, etc).
- * Skip it for SVGs.
- * Skip it for GitBook images (to avoid recursion).
- */
-export function checkIsSizableImageURL(input: string): boolean {
-    if (!URL.canParse(input)) {
-        return false;
-    }
-
-    if (input.includes('/~gitbook/image')) {
-        return false;
-    }
-
-    const parsed = new URL(input);
-    if (parsed.pathname.endsWith('.svg') || parsed.pathname.endsWith('.avif')) {
-        return false;
-    }
-    if (!checkIsHttpURL(parsed)) {
-        return false;
-    }
-
-    return true;
-}
-
-/**
- * Get the size of an image.
- */
-export async function getImageSize(
-    input: string,
-    defaultSize: Partial<CloudflareImageOptions> = {}
-): Promise<{ width: number; height: number } | null> {
-    if (!checkIsSizableImageURL(input)) {
-        return null;
-    }
-
-    try {
-        const response = await resizeImage(input, {
-            // Abort the request after 2 seconds to avoid blocking rendering for too long
-            signal: AbortSignal.timeout(2000),
-            // Measure size and resize it to the most common size
-            // to optimize caching
-            ...defaultSize,
-            format: 'json',
-            anim: false,
-        });
-
-        const json = (await response.json()) as CloudflareImageJsonFormat;
-        return {
-            width: json.original.width,
-            height: json.original.height,
-        };
-    } catch (_error) {
-        return null;
-    }
-}
-
-/**
- * Execute a Cloudflare Image Resize operation on an image.
- */
-export async function resizeImage(
-    input: string,
-    options: CloudflareImageOptions & {
-        signal?: AbortSignal;
-    }
-): Promise<Response> {
-    const { signal, ...resizeOptions } = options;
-
-    const parsed = new URL(input);
-    if (parsed.protocol === 'data:') {
-        throw new Error('Cannot resize data: URLs');
-    }
-
-    if (parsed.hostname === 'localhost') {
-        throw new Error('Cannot resize localhost URLs');
-    }
-
-    // Since Cloudflare Images options on fetch are not supported on Cloudflare Pages,
-    // we need to use the Cloudflare Image Resize API directly.
-    if (!GITBOOK_IMAGE_RESIZE_URL) {
-        throw new Error('GITBOOK_IMAGE_RESIZE_URL is not set');
-    }
-
-    return await fetch(
-        `${GITBOOK_IMAGE_RESIZE_URL}${stringifyOptions(
-            resizeOptions
-        )}/${encodeURIComponent(input)}`,
-        {
-            headers: {
-                // Pass the `Accept` header, as Cloudflare uses this to validate the format.
-                Accept:
-                    resizeOptions.format === 'json'
-                        ? 'application/json'
-                        : `image/${resizeOptions.format || 'jpeg'}`,
-            },
-            signal,
-        }
-    );
-}
-
-function stringifyOptions(options: CloudflareImageOptions): string {
-    return Object.entries({ ...options }).reduce((rest, [key, value]) => {
-        return `${rest}${rest ? ',' : ''}${key}=${value}`;
-    }, '');
-}
-
 /**
  * Because of a bug in Cloudflare, 127.0.0.1 is replaced by localhost.
  * We protect against it by converting to a special token, and then parsing

packages/gitbook-v2/src/lib/images/getImageResizingContextId.ts

@@ -0,0 +1,13 @@
+import { getProxyRequestIdentifier, isProxyRequest } from '../data';
+
+/**
+ * Get the site identifier to use for image resizing for an incoming request.
+ * This identifier can be obtained before resolving the request URL.
+ */
+export function getImageResizingContextId(url: URL): string {
+    if (isProxyRequest(url)) {
+        return getProxyRequestIdentifier(url);
+    }
+
+    return url.host;
+}

packages/gitbook-v2/src/lib/images/index.ts

@@ -2,3 +2,6 @@ export * from './types';
 export * from './createImageResizer';
 export * from './signatures';
 export * from './utils';
+export * from './getImageResizingContextId';
+export * from './resizer';
+export * from './checkIsSizableImageURL';

packages/gitbook-v2/src/lib/images/resizer/cdn-cgi.ts

@@ -0,0 +1,48 @@
+import { GITBOOK_IMAGE_RESIZE_URL } from '@v2/lib/env';
+import type { CloudflareImageOptions } from './types';
+import { copyImageResponse } from './utils';
+
+/**
+ * Resize an image by doing a request to a /cdn/cgi/ endpoint.
+ * https://developers.cloudflare.com/images/transform-images/transform-via-url/
+ */
+export async function resizeImageWithCDNCgi(
+    input: string,
+    options: CloudflareImageOptions & {
+        signal?: AbortSignal;
+    }
+): Promise<Response> {
+    const { signal, ...resizeOptions } = options;
+
+    // Since Cloudflare Images options on fetch are not supported on Cloudflare Pages,
+    // we need to use the Cloudflare Image Resize API directly.
+    if (!GITBOOK_IMAGE_RESIZE_URL) {
+        throw new Error('GITBOOK_IMAGE_RESIZE_URL is not set for cdn-cgi image resize mode');
+    }
+
+    const resizeURL = `${GITBOOK_IMAGE_RESIZE_URL}${stringifyOptions(
+        resizeOptions
+    )}/${encodeURIComponent(input)}`;
+
+    // biome-ignore lint/suspicious/noConsole: this log is useful for debugging
+    console.log(`resize image using cdn-cgi: ${resizeURL}`);
+
+    return copyImageResponse(
+        await fetch(resizeURL, {
+            headers: {
+                // Pass the `Accept` header, as Cloudflare uses this to validate the format.
+                Accept:
+                    resizeOptions.format === 'json'
+                        ? 'application/json'
+                        : `image/${resizeOptions.format || 'jpeg'}`,
+            },
+            signal,
+        })
+    );
+}
+
+function stringifyOptions(options: CloudflareImageOptions): string {
+    return Object.entries({ ...options }).reduce((rest, [key, value]) => {
+        return `${rest}${rest ? ',' : ''}${key}=${value}`;
+    }, '');
+}

packages/gitbook-v2/src/lib/images/resizer/cf-fetch.ts

@@ -0,0 +1,34 @@
+import type { CloudflareImageOptions } from './types';
+import { copyImageResponse } from './utils';
+
+/**
+ * Resize an image by doing a request to the image itself using the Cloudflare fetch.
+ * https://developers.cloudflare.com/images/transform-images/transform-via-workers/
+ *
+ * This method doesn't work in Cloudflare Pages and is only supported in workers.
+ */
+export async function resizeImageWithCFFetch(
+    input: string,
+    options: CloudflareImageOptions & {
+        signal?: AbortSignal;
+    }
+): Promise<Response> {
+    const { signal, ...resizeOptions } = options;
+
+    // biome-ignore lint/suspicious/noConsole: this log is useful for debugging
+    console.log(`resize image using cf-fetch: ${input}`);
+
+    return copyImageResponse(
+        await fetch(input, {
+            headers: {
+                // Pass the `Accept` header, as Cloudflare uses this to validate the format.
+                Accept:
+                    resizeOptions.format === 'json'
+                        ? 'application/json'
+                        : `image/${resizeOptions.format || 'jpeg'}`,
+            },
+            signal,
+            cf: { image: resizeOptions },
+        })
+    );
+}

packages/gitbook-v2/src/lib/images/resizer/index.ts

@@ -0,0 +1,2 @@
+export * from './types';
+export * from './resizeImage';

packages/gitbook-v2/src/lib/images/resizer/resizeImage.ts

@@ -0,0 +1,72 @@
+import 'server-only';
+import assertNever from 'assert-never';
+import { GITBOOK_IMAGE_RESIZE_MODE } from '../../env';
+import { SizableImageAction, checkIsSizableImageURL } from '../checkIsSizableImageURL';
+import { resizeImageWithCDNCgi } from './cdn-cgi';
+import { resizeImageWithCFFetch } from './cf-fetch';
+import type { CloudflareImageJsonFormat, CloudflareImageOptions } from './types';
+
+/**
+ * Get the size of an image.
+ */
+export async function getImageSize(
+    input: string,
+    defaultSize: Partial<CloudflareImageOptions> = {}
+): Promise<{ width: number; height: number } | null> {
+    if (checkIsSizableImageURL(input) !== SizableImageAction.Resize) {
+        return null;
+    }
+
+    try {
+        const response = await resizeImage(input, {
+            // Abort the request after 2 seconds to avoid blocking rendering for too long
+            signal: AbortSignal.timeout(2000),
+            // Measure size and resize it to the most common size
+            // to optimize caching
+            ...defaultSize,
+            format: 'json',
+            anim: false,
+        });
+
+        const json = (await response.json()) as CloudflareImageJsonFormat;
+        return {
+            width: json.original.width,
+            height: json.original.height,
+        };
+    } catch (error) {
+        console.warn(`Error getting image size for ${input}:`, error);
+        return null;
+    }
+}
+
+/**
+ * Execute a Cloudflare Image Resize operation on an image.
+ */
+export async function resizeImage(
+    input: string,
+    options: CloudflareImageOptions & {
+        signal?: AbortSignal;
+    }
+): Promise<Response> {
+    const action = checkIsSizableImageURL(input);
+    if (action === SizableImageAction.Skip) {
+        throw new Error(
+            'Cannot resize this image, this function should have never been called on this url'
+        );
+    }
+
+    if (action === SizableImageAction.Passthrough) {
+        return fetch(input, {
+            signal: options.signal,
+        });
+    }
+
+    switch (GITBOOK_IMAGE_RESIZE_MODE) {
+        case 'cdn-cgi':
+            return resizeImageWithCDNCgi(input, options);
+        case 'cf-fetch':
+            return resizeImageWithCFFetch(input, options);
+        default:
+            assertNever(GITBOOK_IMAGE_RESIZE_MODE);
+    }
+}

packages/gitbook-v2/src/lib/images/resizer/types.ts

@@ -0,0 +1,23 @@
+export interface CloudflareImageJsonFormat {
+    width: number;
+    height: number;
+    original: {
+        file_size: number;
+        width: number;
+        height: number;
+        format: string;
+    };
+}
+
+/**
+ * https://developers.cloudflare.com/images/image-resizing/resize-with-workers/
+ */
+export interface CloudflareImageOptions {
+    format?: 'webp' | 'avif' | 'json' | 'jpeg';
+    fit?: 'scale-down' | 'contain' | 'cover' | 'crop' | 'pad';
+    width?: number;
+    height?: number;
+    dpr?: number;
+    anim?: boolean;
+    quality?: number;
+}

packages/gitbook-v2/src/lib/images/resizer/utils.ts

@@ -0,0 +1,7 @@
+/**
+ * Copy a response to make sure it can be mutated by the rest of the middleware.
+ * To avoid errors "Can't modify immutable headers".
+ */
+export function copyImageResponse(response: Response) {
+    return new Response(response.body, response);
+}

packages/gitbook-v2/src/lib/images/signatures.ts

@@ -18,7 +18,7 @@ export const CURRENT_SIGNATURE_VERSION: SignatureVersion = '2';
 
 type SignFnInput = {
     url: string;
-    host: string;
+    imagesContextId: string;
 };
 
 type SignFn = (input: SignFnInput) => MaybePromise<string>;
@@ -32,6 +32,11 @@ export async function verifyImageSignature(
 ): Promise<boolean> {
     const generator = IMAGE_SIGNATURE_FUNCTIONS[version];
     const generated = await generator(input);
+
+    // biome-ignore lint/suspicious/noConsole: we want to log the signature comparison
+    console.log(
+        `comparing image signature for "${input.url}" on identifier "${input.imagesContextId}": "${generated}" (expected) === "${signature}" (actual)`
+    );
     return generated === signature;
 }
 
@@ -60,12 +65,14 @@ const generateSignatureV2: SignFn = async (input) => {
     assert(GITBOOK_IMAGE_RESIZE_SIGNING_KEY, 'GITBOOK_IMAGE_RESIZE_SIGNING_KEY is not set');
     const all = [
         input.url,
-        input.host, // The hostname is used to avoid serving images from other sites on the same domain
+        input.imagesContextId, // The hostname is used to avoid serving images from other sites on the same domain
         GITBOOK_IMAGE_RESIZE_SIGNING_KEY,
     ]
         .filter(Boolean)
         .join(':');
-    return fnv1a(all, { utf8Buffer: fnv1aUtf8Buffer }).toString(16);
+
+    const signature = fnv1a(all, { utf8Buffer: fnv1aUtf8Buffer }).toString(16);
+    return signature;
 };
 
 // Reused buffer for FNV-1a hashing in the v1 algorithm

packages/gitbook-v2/src/lib/links.test.ts

@@ -1,25 +1,51 @@
 import { describe, expect, it } from 'bun:test';
-import { appendBasePathToLinker, createLinker } from './links';
+import { createLinker } from './links';
 
 const root = createLinker({
     host: 'docs.company.com',
-    pathname: '/',
+    spaceBasePath: '/',
+    siteBasePath: '/',
 });
 
 const variantInSection = createLinker({
     host: 'docs.company.com',
-    pathname: '/section/variant',
+    spaceBasePath: '/section/variant',
+    siteBasePath: '/',
+});
+
+const siteGitBookIO = createLinker({
+    host: 'org.gitbook.io',
+    spaceBasePath: '/sitename/variant/',
+    siteBasePath: '/sitename/',
 });
 
 describe('toPathInContent', () => {
     it('should return the correct path', () => {
-        expect(root.toPathInContent('some/path')).toBe('/some/path');
-        expect(variantInSection.toPathInContent('some/path')).toBe('/section/variant/some/path');
+        expect(root.toPathInSpace('some/path')).toBe('/some/path');
+        expect(variantInSection.toPathInSpace('some/path')).toBe('/section/variant/some/path');
     });
 
     it('should handle leading slash', () => {
-        expect(root.toPathInContent('/some/path')).toBe('/some/path');
-        expect(variantInSection.toPathInContent('/some/path')).toBe('/section/variant/some/path');
+        expect(root.toPathInSpace('/some/path')).toBe('/some/path');
+        expect(variantInSection.toPathInSpace('/some/path')).toBe('/section/variant/some/path');
+    });
+});
+
+describe('toPathInSite', () => {
+    it('should return the correct path', () => {
+        expect(root.toPathInSite('some/path')).toBe('/some/path');
+        expect(siteGitBookIO.toPathInSite('some/path')).toBe('/sitename/some/path');
+    });
+});
+
+describe('toRelativePathInSite', () => {
+    it('should return the correct path', () => {
+        expect(root.toRelativePathInSite('/some/path')).toBe('some/path');
+        expect(siteGitBookIO.toRelativePathInSite('/sitename/some/path')).toBe('some/path');
+    });
+
+    it('should preserve absolute paths outside of the site', () => {
+        expect(siteGitBookIO.toRelativePathInSite('/outside/some/path')).toBe('/outside/some/path');
     });
 });
 
@@ -32,27 +58,17 @@ describe('toAbsoluteURL', () => {
     });
 });
 
-describe('appendBasePathToLinker', () => {
-    const prefixedRoot = appendBasePathToLinker(root, '/section/variant');
-    const prefixedVariantInSection = appendBasePathToLinker(variantInSection, '/base');
-
-    describe('toPathInContent', () => {
-        it('should return the correct path', () => {
-            expect(prefixedRoot.toPathInContent('some/path')).toBe('/section/variant/some/path');
-            expect(prefixedVariantInSection.toPathInContent('some/path')).toBe(
-                '/section/variant/base/some/path'
-            );
-        });
+describe('toLinkForContent', () => {
+    it('should return the correct path', () => {
+        expect(root.toLinkForContent('https://docs.company.com/some/path')).toBe('/some/path');
+        expect(siteGitBookIO.toLinkForContent('https://org.gitbook.io/sitename/some/path')).toBe(
+            '/sitename/some/path'
+        );
     });
 
-    describe('toAbsoluteURL', () => {
-        it('should return the correct path', () => {
-            expect(prefixedRoot.toAbsoluteURL('some/path')).toBe(
-                'https://docs.company.com/some/path'
-            );
-            expect(prefixedVariantInSection.toAbsoluteURL('some/path')).toBe(
-                'https://docs.company.com/some/path'
-            );
-        });
+    it('should preserve an absolute URL if the site is not the same', () => {
+        expect(siteGitBookIO.toLinkForContent('https://org.gitbook.io/anothersite/some/path')).toBe(
+            'https://org.gitbook.io/anothersite/some/path'
+        );
     });
 });