Init

Co-authored-by: Steven H <steven@gitbook.io>

.changeset/afraid-gifts-sparkle.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix UX issue about highlighting the search term in search result sections

.changeset/big-gorillas-perform.md

@@ -0,0 +1,9 @@
+---
+"gitbook": patch
+---
+
+Fix three small visual issues
+
+- Fix sidebar showing on `no-toc` pages in the gradient theme
+- Fix variant selector truncating incorrectly in header when sections are present
+- Fix page cover alignment on `lg` screens without TOC

.changeset/breezy-falcons-drop.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Respect fullWidth and defaultWidth for images

.changeset/clever-jokes-yell.md

@@ -0,0 +1,5 @@
+---
+"gitbook-v2": patch
+---
+
+Add docs.testgitbook.com to ADAPTIVE_CONTENT_HOSTS list

.changeset/cold-buckets-divide.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+fix nested a tag causing hydration error

.changeset/cool-jars-matter.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+fix href being empty in TOC

.changeset/cool-seas-approve.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix navigation between sections/variants when previewing a site in v2

.changeset/curly-rules-learn.md

@@ -0,0 +1,5 @@
+---
+"gitbook": minor
+---
+
+Add support for inline icons.

.changeset/fair-crews-wink.md

@@ -0,0 +1,5 @@
+---
+"gitbook": minor
+---
+
+Add circular corners and depth styling

.changeset/famous-melons-compete.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix crash when integration script fails to render block.

.changeset/fast-trees-battle.md

@@ -0,0 +1,5 @@
+---
+'@gitbook/react-openapi': patch
+---
+
+Add authorization header for OAuth2

.changeset/fifty-ducks-press.md

@@ -0,0 +1,6 @@
+---
+'@gitbook/react-openapi': patch
+'gitbook': patch
+---
+
+Improve support for OAuth2 security type

.changeset/flat-wolves-poke.md

@@ -0,0 +1,6 @@
+---
+"gitbook-v2": patch
+"gitbook": patch
+---
+
+Adds Columns layout block to GBO

.changeset/forty-readers-mix.md

@@ -0,0 +1,5 @@
+---
+"gitbook": minor
+---
+
+Support dark-mode specific page cover image

.changeset/fresh-shrimps-flow.md

@@ -0,0 +1,5 @@
+---
+'gitbook': patch
+---
+
+Update Models page styling

.changeset/fuzzy-tables-jump.md

@@ -0,0 +1,5 @@
+---
+"gitbook-v2": patch
+---
+
+Optimize performances by using a smarter per-request cache arround data cached functions

.changeset/gorgeous-cycles-cheat.md

@@ -0,0 +1,5 @@
+---
+"gitbook-v2": patch
+---
+
+add a force-revalidate api route to force bust the cache in case of errors

.changeset/green-clouds-cough.md

@@ -0,0 +1,5 @@
+---
+"gitbook": minor
+---
+
+Fix rendering of ogimage with SVG logos.

.changeset/hip-bobcats-cover.md

@@ -0,0 +1,5 @@
+---
+"gitbook": minor
+---
+
+Best effort at preserving current variant when navigating between sections by matching the pathname against site spaces in the new section.

.changeset/lazy-pants-matter.md

@@ -0,0 +1,6 @@
+---
+"gitbook-v2": patch
+"gitbook": patch
+---
+
+encode customization header

.changeset/long-cameras-protect.md

@@ -0,0 +1,5 @@
+---
+"gitbook": minor
+---
+
+Rework full-width layout, add support for full-width page option

.changeset/nasty-moles-visit.md

@@ -0,0 +1,5 @@
+---
+"gitbook-v2": patch
+---
+
+fix ISR on preview env

.changeset/nervous-students-judge.md

@@ -0,0 +1,6 @@
+---
+"gitbook-v2": patch
+"gitbook": patch
+---
+
+Fix concurrent execution in Vercel causing pages to not be attached to the proper tags.

.changeset/orange-ears-drop.md

@@ -0,0 +1,5 @@
+---
+"@gitbook/react-contentkit": patch
+---
+
+Add basic error handling when transitioning between states.

.changeset/orange-hounds-sparkle.md

@@ -0,0 +1,5 @@
+---
+"gitbook-v2": patch
+---
+
+Generate a llms-full.txt version of the docs site

.changeset/poor-dodos-lick.md

@@ -0,0 +1,5 @@
+---
+"@gitbook/fonts": minor
+---
+
+Initial version of the package

.changeset/pretty-balloons-fold.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix rendering of ogimage when logo or icon are AVIF images.

.changeset/purple-cougars-breathe.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Add margin to adjacent buttons

.changeset/real-walls-glow.md

@@ -0,0 +1,5 @@
+---
+"gitbook-v2": patch
+---
+
+Don't cache unexpected API errors for more than a few minutes.

.changeset/rotten-donuts-bow.md

@@ -0,0 +1,5 @@
+---
+"gitbook-v2": patch
+---
+
+add a global error boundary

.changeset/rotten-seals-rush.md

@@ -0,0 +1,5 @@
+---
+'@gitbook/react-openapi': patch
+---
+
+Indent JSON python code sample

.changeset/sharp-hats-applaud.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix missing title on button to close the announcement banner.

.changeset/sharp-jeans-burn.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Make icons for page groups more contrasting

.changeset/slimy-cows-press.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Ignore case while highlighting search results.

.changeset/slow-lizards-obey.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Make TOC height dynamic based on visible header and footer elements

.changeset/strong-poets-move.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix bold header links hover color

.changeset/stupid-plums-perform.md

@@ -0,0 +1,6 @@
+---
+"gitbook": patch
+"gitbook-v2": patch
+---
+
+cache fonts and static image used in OGImage in memory

.changeset/tame-mangos-battle.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix border being added to cards

.changeset/thick-chefs-repeat.md

@@ -0,0 +1,5 @@
+---
+'@gitbook/react-openapi': patch
+---
+
+Handle nested deprecated properties in generateSchemaExample

.changeset/thin-buckets-grow.md

@@ -0,0 +1,5 @@
+---
+"gitbook-v2": patch
+---
+
+Add `urlObject.hash` to `linker.toLinkForContent` to pass through URL fragment identifiers, used in search

.changeset/tidy-dots-suffer.md

@@ -0,0 +1,5 @@
+---
+"gitbook-v2": patch
+---
+
+apply customization for dynamic context

.changeset/tiny-zoos-scream.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Reverse order of feedback smileys

.changeset/violet-schools-care.md

@@ -0,0 +1,5 @@
+---
+'@gitbook/react-openapi': patch
+---
+
+Deduplicate path parameters from OpenAPI spec

.changeset/warm-roses-sleep.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix ogimage using incorrect Google Font depending on language.

.changeset/wise-gifts-smash.md

@@ -0,0 +1,5 @@
+---
+"gitbook-v2": patch
+---
+
+remove trailing slash from linker

.github/CONTRIBUTING.md

@@ -53,19 +53,47 @@ After forking this repository, you'll want to [create a branch](https://docs.git
 
 #### 3. Install dependencies and run the project locally
 
-GitBook uses [Bun](https://bun.sh/) to run the project. Make sure you're using the specified version of `node` before running any of the development commands to ensure a smooth development experience.
+##### Prerequisites:
+- Node.js (Version: >=20.6)
+  - Use `nvm` for easy Node management
+- [Bun](https://bun.sh/) (Version: >=1.2.15)
+  - We use a text-based lockfile which isn't supported below 1.2.15
 
-You can easily do this by running the command `nvm use`.
+##### Setup steps:
 
-To start your local version of GitBook, run the command `bun dev`.
+1. Ensure you are using the project's version of Node:
+```bash
+nvm use
+```
+
+2. Install dependencies using Bun:
+```bash
+bun install
+```
+
+3. Build the project:
+```bash
+bun build:v2
+```
+
+4. Start the development server:
+```bash
+bun dev:v2
+```
+
+Additional development commands:
+- `bun format`: Format the code using Biome
+- `bun typecheck`: Run TypeScript type checking
+- `bun unit`: Run unit tests
+- `bun e2e`: Run end-to-end tests
 
 #### 4. Preview your changes
 
 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/actions/gradual-deploy-cloudflare/action.yaml

@@ -0,0 +1,83 @@
+name: Gradual Deploy to Cloudflare
+description: Use gradual deployment to deploy to Cloudflare. This action will upload the middleware and server versions to Cloudflare and kept them bound together
+inputs:
+  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
+  middlewareVersionId:
+    description: 'Middleware version ID to deploy'
+    required: true
+  serverVersionId:
+    description: 'Server version ID to deploy'
+    required: true
+outputs:
+  deployment-url: 
+    description: "Deployment URL"
+    value: ${{ steps.deploy_middleware.outputs.deployment-url }}
+runs:
+  using: 'composite'
+  steps:
+      - id: wrangler_status
+        name: Check wrangler deployment status
+        uses: cloudflare/wrangler-action@v3.14.0
+        with:
+            apiToken: ${{ inputs.apiToken }}
+            accountId: ${{ inputs.accountId }}
+            workingDirectory: ./
+            wranglerVersion: '4.10.0'
+            environment: ${{ inputs.environment }}
+            command: deployments status --config ./packages/gitbook-v2/openNext/customWorkers/defaultWrangler.jsonc
+
+      # This step is used to get the version ID that is currently deployed to Cloudflare.
+      - id: extract_current_version
+        name: Extract current version
+        shell: bash
+        run: |
+          version_id=$(echo "${{ steps.wrangler_status.outputs.command-output }}" | grep -A 3 "(100%)" | grep -oP '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}')
+          echo "version_id=$version_id" >> $GITHUB_OUTPUT
+
+      - id: deploy_server
+        name: Deploy server to Cloudflare at 0%
+        uses: cloudflare/wrangler-action@v3.14.0
+        with:
+            apiToken: ${{ inputs.apiToken }}
+            accountId: ${{ inputs.accountId }}
+            workingDirectory: ./
+            wranglerVersion: '4.10.0'
+            environment: ${{ inputs.environment }}
+            command: versions deploy ${{ steps.extract_current_version.outputs.version_id }}@100% ${{ inputs.serverVersionId }}@0% -y --config ./packages/gitbook-v2/openNext/customWorkers/defaultWrangler.jsonc
+
+      # Since we use version overrides headers, we can directly deploy the middleware to 100%.
+      - id: deploy_middleware
+        name: Deploy middleware to Cloudflare at 100%
+        uses: cloudflare/wrangler-action@v3.14.0
+        with:
+            apiToken: ${{ inputs.apiToken }}
+            accountId: ${{ inputs.accountId }}
+            workingDirectory: ./
+            wranglerVersion: '4.10.0'
+            environment: ${{ inputs.environment }}
+            command: versions deploy ${{ inputs.middlewareVersionId }}@100% -y --config ./packages/gitbook-v2/openNext/customWorkers/middlewareWrangler.jsonc
+
+      - name: Deploy server to Cloudflare at 100%
+        uses: cloudflare/wrangler-action@v3.14.0
+        with:
+            apiToken: ${{ inputs.apiToken }}
+            accountId: ${{ inputs.accountId }}
+            workingDirectory: ./
+            wranglerVersion: '4.10.0'
+            environment: ${{ inputs.environment }}
+            command: versions deploy ${{ inputs.serverVersionId }}@100% -y --config ./packages/gitbook-v2/openNext/customWorkers/defaultWrangler.jsonc
+
+      - name: Outputs
+        shell: bash
+        env:
+          DEPLOYMENT_URL: ${{ steps.deploy_middleware.outputs.deployment-url }}
+        run: |
+            echo "URL: ${{ steps.deploy_middleware.outputs.deployment-url }}"

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

@@ -28,7 +28,7 @@ inputs:
 outputs:
     deployment-url: 
       description: "Deployment URL"
-      value: ${{ steps.deploy.outputs.deployment-url }}
+      value: ${{ steps.upload_middleware.outputs.deployment-url }}
 runs:
     using: 'composite'
     steps:
@@ -63,8 +63,8 @@ runs:
           env:
             GITBOOK_RUNTIME: cloudflare
           shell: bash
-        - id: deploy
-          name: Deploy to Cloudflare
+
+        - name: Upload the DO worker
           uses: cloudflare/wrangler-action@v3.14.0
           with:
               apiToken: ${{ inputs.apiToken }}
@@ -72,10 +72,67 @@ runs:
               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
+              command: deploy --config ./packages/gitbook-v2/openNext/customWorkers/doWrangler.jsonc
+
+        - id: upload_server
+          name: Upload server 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: ${{ format('versions upload --tag {0} --message "{1}"', inputs.commitTag, inputs.commitMessage) }} --config ./packages/gitbook-v2/openNext/customWorkers/defaultWrangler.jsonc
+
+        - name: Extract server version worker ID
+          shell: bash
+          id: extract_server_version_id
+          run: |
+              version_id=$(echo '${{ steps.upload_server.outputs.command-output }}' | grep "Worker Version ID" | awk '{print $4}')
+              echo "version_id=$version_id" >> $GITHUB_OUTPUT
+
+        - name: Run updateWrangler scripts
+          shell: bash
+          run: |
+              bun run ./packages/gitbook-v2/openNext/customWorkers/script/updateWrangler.ts ${{ steps.extract_server_version_id.outputs.version_id }}
+
+        - id: upload_middleware
+          name: Upload middleware 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: ${{ format('versions upload --tag {0} --message "{1}"', inputs.commitTag, inputs.commitMessage) }} --config ./packages/gitbook-v2/openNext/customWorkers/middlewareWrangler.jsonc
+        
+        - name: Extract middleware version worker ID
+          shell: bash
+          id: extract_middleware_version_id
+          run: |
+              version_id=$(echo '${{ steps.upload_middleware.outputs.command-output }}' | grep "Worker Version ID" | awk '{print $4}')
+              echo "version_id=$version_id" >> $GITHUB_OUTPUT
+
+        - name: Deploy server and middleware to Cloudflare
+          if: ${{ inputs.deploy == 'true' }}
+          uses: ./.github/actions/gradual-deploy-cloudflare
+          with:
+              apiToken: ${{ inputs.apiToken }}
+              accountId: ${{ inputs.accountId }}
+              opServiceAccount: ${{ inputs.opServiceAccount }}
+              opItem: ${{ inputs.opItem }}
+              environment: ${{ inputs.environment }}
+              serverVersionId: ${{ steps.extract_server_version_id.outputs.version_id }}
+              middlewareVersionId: ${{ steps.extract_middleware_version_id.outputs.version_id }}
+              deploy: ${{ inputs.deploy }}
+
+
         - name: Outputs
           shell: bash
           env:
-            DEPLOYMENT_URL: ${{ steps.deploy.outputs.deployment-url }}
+            DEPLOYMENT_URL: ${{ steps.upload_middleware.outputs.deployment-url }}
           run: |
-              echo "URL: ${{ steps.deploy.outputs.deployment-url }}"
+              echo "URL: ${{ steps.upload_middleware.outputs.deployment-url }}"
+              echo "Output server: ${{ steps.upload_server.outputs.command-output }}"

.github/workflows/deploy-preview.yaml

@@ -152,14 +152,14 @@ jobs:
 
                       | Site | `v1` | `2v` | `2c` |
                       | --- | --- | --- | --- |
-                      | GitBook | [${{ needs.deploy-v1-cloudflare.outputs.deployment-url }}/docs.gitbook.com](${{ needs.deploy-v1-cloudflare.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) | [${{ needs.deploy-v2-cloudflare.outputs.deployment-url }}/url/docs.gitbook.com](${{ needs.deploy-v2-cloudflare.outputs.deployment-url }}/url/docs.gitbook.com) |
+                      | 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
+        timeout-minutes: 10
         steps:
             - name: Checkout
               uses: actions/checkout@v4
@@ -200,7 +200,6 @@ jobs:
         name: Visual Testing v2 (Cloudflare)
         needs: deploy-v2-cloudflare
         timeout-minutes: 10
-        if: startsWith(github.head_ref || github.ref_name, 'cloudflare/') || github.ref == 'refs/heads/main'
         steps:
             - name: Checkout
               uses: actions/checkout@v4
@@ -221,7 +220,7 @@ jobs:
         runs-on: ubuntu-latest
         name: Visual Testing Customers v1
         needs: deploy-v1-cloudflare
-        timeout-minutes: 8
+        timeout-minutes: 10
         steps:
             - name: Checkout
               uses: actions/checkout@v4
@@ -241,7 +240,7 @@ jobs:
         runs-on: ubuntu-latest
         name: Visual Testing Customers v2
         needs: deploy-v2-vercel
-        timeout-minutes: 8
+        timeout-minutes: 10
         steps:
             - name: Checkout
               uses: actions/checkout@v4
@@ -262,8 +261,7 @@ jobs:
         runs-on: ubuntu-latest
         name: Visual Testing Customers v2 (Cloudflare)
         needs: deploy-v2-cloudflare
-        timeout-minutes: 8
-        if: startsWith(github.head_ref || github.ref_name, 'cloudflare/') || github.ref == 'refs/heads/main'
+        timeout-minutes: 10
         steps:
             - name: Checkout
               uses: actions/checkout@v4

.vscode/settings.json

@@ -9,6 +9,7 @@
     ],
     "tailwindCSS.classAttributes": ["class", "className", "style", ".*Style"],
     "prettier.enable": false,
+    "editor.formatOnSave": true,
     "editor.defaultFormatter": "biomejs.biome",
     "editor.codeActionsOnSave": {
         "source.organizeImports.biome": "explicit",

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">
@@ -56,26 +56,27 @@ git clone https://github.com/gitbookIO/gitbook.git
 bun install
 ```
 
-4. Start your local development server.
+4. Run build.
+
+```
+bun build:v2
+```
+
+5. Start your local development server.
 
 ```
 bun dev:v2
 ```
 
-5. Open a published GitBook space in your web browser, prefixing it with `http://localhost:3000/`.
+6. Open a published GitBook space in your web browser, prefixing it with `http://localhost:3000/`.
 
 examples:
 
--   http://localhost:3000/url/docs.gitbook.com
+-   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.
 
-### Other development commands
-
--   `bun format`: format the code
--   `bun lint`: lint the code
-
 ### CI and testing
 
 All pull-requests will be tested against both visual and performances testing to prevent regressions.
@@ -150,11 +151,11 @@ See `LICENSE` for more information.
 </p>
 
 ```md
-[![GitBook](https://img.shields.io/static/v1?message=Documented%20on%20GitBook&logo=gitbook&logoColor=ffffff&label=%20&labelColor=5c5c5c&color=3F89A1)](https://gitbook.com/)
+[![GitBook](https://img.shields.io/static/v1?message=Documented%20on%20GitBook&logo=gitbook&logoColor=ffffff&label=%20&labelColor=5c5c5c&color=3F89A1)](https://www.gitbook.com/preview?utm_source=gitbook_readme_badge&utm_medium=organic&utm_campaign=preview_documentation&utm_content=link)
 ```
 
 ```html
-<a href="https://gitbook.com">
+<a href="https://www.gitbook.com/preview?utm_source=gitbook_readme_badge&utm_medium=organic&utm_campaign=preview_documentation&utm_content=link">
     <img
         src="https://img.shields.io/static/v1?message=Documented%20on%20GitBook&logo=gitbook&logoColor=ffffff&label=%20&labelColor=5c5c5c&color=3F89A1"
     />

package.json

@@ -7,12 +7,11 @@
         "turbo": "^2.5.0",
         "vercel": "^39.3.0"
     },
-    "packageManager": "bun@1.2.8",
+    "packageManager": "bun@1.2.15",
     "overrides": {
         "@codemirror/state": "6.4.1",
-        "react": "18.3.1",
-        "react-dom": "18.3.1",
-        "@gitbook/api": "0.111.0"
+        "react": "^19.0.0",
+        "react-dom": "^19.0.0"
     },
     "private": true,
     "scripts": {
@@ -34,7 +33,12 @@
         "download:env": "op read op://gitbook-x-dev/gitbook-open/.env.local >> .env.local",
         "clean": "turbo run clean"
     },
-    "workspaces": ["packages/*"],
+    "workspaces": {
+        "packages": ["packages/*"],
+        "catalog": {
+            "@gitbook/api": "^0.121.0"
+        }
+    },
     "patchedDependencies": {
         "decode-named-character-reference@1.0.2": "patches/decode-named-character-reference@1.0.2.patch",
         "@vercel/next@4.4.2": "patches/@vercel%2Fnext@4.4.2.patch"

packages/cache-tags/package.json

@@ -10,7 +10,7 @@
     },
     "version": "0.3.1",
     "dependencies": {
-        "@gitbook/api": "^0.111.0",
+        "@gitbook/api": "catalog:",
         "assert-never": "^1.2.1"
     },
     "devDependencies": {

packages/colors/CHANGELOG.md

@@ -1,5 +1,13 @@
 # @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

packages/colors/package.json

@@ -8,7 +8,7 @@
             "default": "./dist/index.js"
         }
     },
-    "version": "0.3.2",
+    "version": "0.3.3",
     "devDependencies": {
         "typescript": "^5.5.3"
     },

packages/colors/src/transformations.ts

@@ -214,13 +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 === 9 ? 1 : index * 0.05;
+        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/fonts/.gitignore

@@ -0,0 +1,2 @@
+dist/
+src/data/*.json

packages/fonts/README.md

@@ -0,0 +1,3 @@
+# `@gitbook/fonts`
+
+Utilities to lookup default fonts supported by GitBook.

packages/fonts/bin/generate.ts

@@ -0,0 +1,91 @@
+import fs from 'node:fs/promises';
+import path from 'node:path';
+
+import { APIv2 } from 'google-font-metadata';
+
+import { CustomizationDefaultFont } from '@gitbook/api';
+
+import type { FontDefinitions } from '../src/types';
+
+const googleFontsMap: { [fontName in CustomizationDefaultFont]: string } = {
+    [CustomizationDefaultFont.Inter]: 'inter',
+    [CustomizationDefaultFont.FiraSans]: 'fira-sans-extra-condensed',
+    [CustomizationDefaultFont.IBMPlexSerif]: 'ibm-plex-serif',
+    [CustomizationDefaultFont.Lato]: 'lato',
+    [CustomizationDefaultFont.Merriweather]: 'merriweather',
+    [CustomizationDefaultFont.NotoSans]: 'noto-sans',
+    [CustomizationDefaultFont.OpenSans]: 'open-sans',
+    [CustomizationDefaultFont.Overpass]: 'overpass',
+    [CustomizationDefaultFont.Poppins]: 'poppins',
+    [CustomizationDefaultFont.Raleway]: 'raleway',
+    [CustomizationDefaultFont.Roboto]: 'roboto',
+    [CustomizationDefaultFont.RobotoSlab]: 'roboto-slab',
+    [CustomizationDefaultFont.SourceSansPro]: 'source-sans-3',
+    [CustomizationDefaultFont.Ubuntu]: 'ubuntu',
+    [CustomizationDefaultFont.ABCFavorit]: 'inter',
+};
+
+/**
+ * Scripts to generate the list of all icons.
+ */
+async function main() {
+    // @ts-expect-error - we build the object
+    const output: FontDefinitions = {};
+
+    for (const font of Object.values(CustomizationDefaultFont)) {
+        const googleFontName = googleFontsMap[font];
+        const fontMetadata = APIv2[googleFontName.toLowerCase()];
+        if (!fontMetadata) {
+            throw new Error(`Font ${googleFontName} not found`);
+        }
+
+        output[font] = {
+            font: googleFontName,
+            unicodeRange: fontMetadata.unicodeRange,
+            variants: {
+                '400': {},
+                '700': {},
+            },
+        };
+
+        Object.keys(output[font].variants).forEach((weight) => {
+            const variants = fontMetadata.variants[weight];
+            const normalVariant = variants.normal;
+            if (!normalVariant) {
+                throw new Error(`Font ${googleFontName} has no normal variant`);
+            }
+
+            output[font].variants[weight] = {};
+            Object.entries(normalVariant).forEach(([script, url]) => {
+                output[font].variants[weight][script] = url.url.woff;
+            });
+        });
+    }
+
+    await writeDataFile('fonts', JSON.stringify(output, null, 2));
+}
+
+/**
+ * We write both in dist and src as the build process might have happen already
+ * and tsc doesn't copy the files.
+ */
+async function writeDataFile(name, content) {
+    const srcData = path.resolve(__dirname, '../src/data');
+    const distData = path.resolve(__dirname, '../dist/data');
+
+    // Ensure the directories exists
+    await Promise.all([
+        fs.mkdir(srcData, { recursive: true }),
+        fs.mkdir(distData, { recursive: true }),
+    ]);
+
+    await Promise.all([
+        fs.writeFile(path.resolve(srcData, `${name}.json`), content),
+        fs.writeFile(path.resolve(distData, `${name}.json`), content),
+    ]);
+}
+
+main().catch((error) => {
+    console.error(`Error generating icons list: ${error}`);
+    process.exit(1);
+});

packages/fonts/package.json

@@ -0,0 +1,31 @@
+{
+    "name": "@gitbook/fonts",
+    "type": "module",
+    "exports": {
+        ".": {
+            "types": "./dist/index.d.ts",
+            "development": "./src/index.ts",
+            "default": "./dist/index.js"
+        }
+    },
+    "version": "0.0.0",
+    "dependencies": {
+        "@gitbook/api": "catalog:"
+    },
+    "devDependencies": {
+        "google-font-metadata": "^6.0.3",
+        "typescript": "^5.5.3"
+    },
+    "scripts": {
+        "generate": "bun ./bin/generate.js",
+        "build": "tsc --project tsconfig.build.json",
+        "typecheck": "tsc --noEmit",
+        "dev": "tsc -w",
+        "clean": "rm -rf ./dist && rm -rf ./src/data",
+        "unit": "bun test"
+    },
+    "files": ["dist", "src", "bin", "README.md", "CHANGELOG.md"],
+    "engines": {
+        "node": ">=20.0.0"
+    }
+}

packages/fonts/src/__snapshots__/getDefaultFont.test.ts.snap

@@ -0,0 +1,57 @@
+// Bun Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`getDefaultFont should return correct object for Latin text 1`] = `
+{
+  "font": "Inter",
+  "url": "https://fonts.gstatic.com/s/inter/v18/UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuLyfAZ9hjp-Ek-_0ew.woff",
+}
+`;
+
+exports[`getDefaultFont should return correct object for Cyrillic text 1`] = `
+{
+  "font": "Inter",
+  "url": "https://fonts.gstatic.com/s/inter/v18/UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuLyfAZthjp-Ek-_0ewmM.woff",
+}
+`;
+
+exports[`getDefaultFont should return correct object for Greek text 1`] = `
+{
+  "font": "Inter",
+  "url": "https://fonts.gstatic.com/s/inter/v18/UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuLyfAZxhjp-Ek-_0ewmM.woff",
+}
+`;
+
+exports[`getDefaultFont should handle mixed script text 1`] = `
+{
+  "font": "Inter",
+  "url": "https://fonts.gstatic.com/s/inter/v18/UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuLyfAZthjp-Ek-_0ewmM.woff",
+}
+`;
+
+exports[`getDefaultFont should handle different font weights: regular 1`] = `
+{
+  "font": "Inter",
+  "url": "https://fonts.gstatic.com/s/inter/v18/UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuLyfAZ9hjp-Ek-_0ew.woff",
+}
+`;
+
+exports[`getDefaultFont should handle different font weights: bold 1`] = `
+{
+  "font": "Inter",
+  "url": "https://fonts.gstatic.com/s/inter/v18/UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuFuYAZ9hjp-Ek-_0ew.woff",
+}
+`;
+
+exports[`getDefaultFont should handle different fonts: inter 1`] = `
+{
+  "font": "Inter",
+  "url": "https://fonts.gstatic.com/s/inter/v18/UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuLyfAZ9hjp-Ek-_0ew.woff",
+}
+`;
+
+exports[`getDefaultFont should handle different fonts: roboto 1`] = `
+{
+  "font": "Roboto",
+  "url": "https://fonts.gstatic.com/s/roboto/v32/KFOmCnqEu92Fr1Mu4mxMKTU1Kg.woff",
+}
+`;

packages/fonts/src/fonts.ts

@@ -0,0 +1,5 @@
+import type { FontDefinitions } from './types';
+
+import rawFonts from './data/fonts.json' with { type: 'json' };
+
+export const fonts: FontDefinitions = rawFonts;

packages/fonts/src/getDefaultFont.test.ts

@@ -0,0 +1,119 @@
+import { describe, expect, it } from 'bun:test';
+import { CustomizationDefaultFont } from '@gitbook/api';
+import { getDefaultFont } from './getDefaultFont';
+
+describe('getDefaultFont', () => {
+    it('should return null for invalid font', () => {
+        const result = getDefaultFont({
+            font: 'invalid-font' as CustomizationDefaultFont,
+            text: 'Hello',
+            weight: 400,
+        });
+        expect(result).toBeNull();
+    });
+
+    it('should return null for invalid weight', () => {
+        const result = getDefaultFont({
+            font: CustomizationDefaultFont.Inter,
+            text: 'Hello',
+            weight: 999 as any,
+        });
+        expect(result).toBeNull();
+    });
+
+    it('should return null for text not supported by any script', () => {
+        const result = getDefaultFont({
+            font: CustomizationDefaultFont.Inter,
+            text: '😀', // Emoji not supported by Inter
+            weight: 400,
+        });
+        expect(result).toBeNull();
+    });
+
+    it('should return correct object for Latin text', () => {
+        const result = getDefaultFont({
+            font: CustomizationDefaultFont.Inter,
+            text: 'Hello World',
+            weight: 400,
+        });
+        expect(result).not.toBeNull();
+        expect(result?.font).toBe(CustomizationDefaultFont.Inter);
+        expect(result).toMatchSnapshot();
+    });
+
+    it('should return correct object for Cyrillic text', () => {
+        const result = getDefaultFont({
+            font: CustomizationDefaultFont.Inter,
+            text: 'Привет мир',
+            weight: 400,
+        });
+        expect(result).not.toBeNull();
+        expect(result?.font).toBe(CustomizationDefaultFont.Inter);
+        expect(result).toMatchSnapshot();
+    });
+
+    it('should return correct object for Greek text', () => {
+        const result = getDefaultFont({
+            font: CustomizationDefaultFont.Inter,
+            text: 'Γεια σας',
+            weight: 400,
+        });
+        expect(result).not.toBeNull();
+        expect(result?.font).toBe(CustomizationDefaultFont.Inter);
+        expect(result).toMatchSnapshot();
+    });
+
+    it('should handle mixed script text', () => {
+        const result = getDefaultFont({
+            font: CustomizationDefaultFont.Inter,
+            text: 'Hello Привет',
+            weight: 400,
+        });
+        expect(result).not.toBeNull();
+        expect(result?.font).toBe(CustomizationDefaultFont.Inter);
+        expect(result).toMatchSnapshot();
+    });
+
+    it('should handle different font weights', () => {
+        const regular = getDefaultFont({
+            font: CustomizationDefaultFont.Inter,
+            text: 'Hello',
+            weight: 400,
+        });
+        const bold = getDefaultFont({
+            font: CustomizationDefaultFont.Inter,
+            text: 'Hello',
+            weight: 700,
+        });
+        expect(regular).not.toBeNull();
+        expect(bold).not.toBeNull();
+        expect(regular).toMatchSnapshot('regular');
+        expect(bold).toMatchSnapshot('bold');
+    });
+
+    it('should handle empty string', () => {
+        const result = getDefaultFont({
+            font: CustomizationDefaultFont.Inter,
+            text: '',
+            weight: 400,
+        });
+        expect(result).toBeNull();
+    });
+
+    it('should handle different fonts', () => {
+        const inter = getDefaultFont({
+            font: CustomizationDefaultFont.Inter,
+            text: 'Hello',
+            weight: 400,
+        });
+        const roboto = getDefaultFont({
+            font: CustomizationDefaultFont.Roboto,
+            text: 'Hello',
+            weight: 400,
+        });
+        expect(inter).not.toBeNull();
+        expect(roboto).not.toBeNull();
+        expect(inter).toMatchSnapshot('inter');
+        expect(roboto).toMatchSnapshot('roboto');
+    });
+});

packages/fonts/src/getDefaultFont.ts

@@ -0,0 +1,112 @@
+import type { CustomizationDefaultFont } from '@gitbook/api';
+import { fonts } from './fonts';
+import type { FontWeight } from './types';
+
+/**
+ * Get the URL to load a font for a text.
+ */
+export function getDefaultFont(input: {
+    /**
+     * GitBook font to use.
+     */
+    font: CustomizationDefaultFont;
+
+    /**
+     * Text to display with the font.
+     */
+    text: string;
+
+    /**
+     * Font weight to use.
+     */
+    weight: FontWeight;
+}): { font: string; url: string } | null {
+    if (!input.text.trim()) {
+        return null;
+    }
+
+    const fontDefinition = fonts[input.font];
+    if (!fontDefinition) {
+        return null;
+    }
+
+    const variant = fontDefinition.variants[`${input.weight}`];
+    if (!variant) {
+        return null;
+    }
+
+    const script = getBestUnicodeRange(input.text, fontDefinition.unicodeRange);
+    if (!script) {
+        return null;
+    }
+
+    return variant[script]
+        ? {
+              font: input.font,
+              url: variant[script],
+          }
+        : null;
+}
+
+/**
+ * Determine which named @font-face unicode-range covers
+ * the greatest share of the characters in `text`.
+ *
+ * @param text   The text you want to inspect.
+ * @param ranges An object whose keys are range names and whose
+ *               values are CSS-style comma-separated unicode-range
+ *               declarations (e.g. "U+0370-03FF,U+1F00-1FFF").
+ * @returns      The key of the best-matching range, or `null`
+ *               when nothing matches at all.
+ */
+function getBestUnicodeRange(text: string, ranges: Record<string, string>): string | null {
+    // ---------- helper: parse "U+XXXX" or "U+XXXX-YYYY" ----------
+    const parseOne = (token: string): [number, number] | null => {
+        token = token.trim().toUpperCase();
+        if (!token.startsWith('U+')) return null;
+
+        const body = token.slice(2); // drop "U+"
+        const [startHex, endHex] = body.split('-');
+        const start = Number.parseInt(startHex, 16);
+        const end = endHex ? Number.parseInt(endHex, 16) : start;
+
+        if (Number.isNaN(start) || Number.isNaN(end) || end < start) return null;
+        return [start, end];
+    };
+
+    // ---------- helper: build lookup table ----------
+    const parsed: Record<string, [number, number][]> = {};
+    for (const [label, list] of Object.entries(ranges)) {
+        parsed[label] = list
+            .split(',')
+            .map(parseOne)
+            .filter((x): x is [number, number] => x !== null);
+    }
+
+    // ---------- tally code-point hits ----------
+    const hits: Record<string, number> = Object.fromEntries(Object.keys(parsed).map((k) => [k, 0]));
+
+    for (let i = 0; i < text.length; ) {
+        const cp = text.codePointAt(i)!;
+        i += cp > 0xffff ? 2 : 1; // advance by 1 UTF-16 code-unit (or 2 for surrogates)
+
+        for (const [label, rangesArr] of Object.entries(parsed)) {
+            if (rangesArr.some(([lo, hi]) => cp >= lo && cp <= hi)) {
+                hits[label]++;
+            }
+        }
+    }
+
+    // ---------- choose the "best" ----------
+    let winner: string | null = null;
+    let maxCount = 0;
+
+    for (const [label, count] of Object.entries(hits)) {
+        if (count > maxCount) {
+            maxCount = count;
+            winner = label;
+        }
+    }
+
+    return maxCount > 0 ? winner : null;
+}

packages/fonts/src/index.ts

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

packages/fonts/src/types.ts

@@ -0,0 +1,17 @@
+import type { CustomizationDefaultFont } from '@gitbook/api';
+
+export type FontWeight = 400 | 700;
+
+export type FontDefinition = {
+    font: string;
+    unicodeRange: {
+        [script: string]: string;
+    };
+    variants: {
+        [weight in string]: {
+            [script: string]: string;
+        };
+    };
+};
+
+export type FontDefinitions = { [fontName in CustomizationDefaultFont]: FontDefinition };

packages/fonts/tsconfig.build.json

@@ -0,0 +1,4 @@
+{
+    "extends": "./tsconfig.json",
+    "exclude": ["node_modules", "src/**/*.test.ts"]
+}

packages/fonts/tsconfig.json

@@ -0,0 +1,24 @@
+{
+    "compilerOptions": {
+        "lib": ["es2023"],
+        "module": "ESNext",
+        "target": "es2022",
+        "strict": true,
+        "esModuleInterop": true,
+        "skipLibCheck": true,
+        "moduleResolution": "bundler",
+        "allowJs": true,
+        "noEmit": false,
+        "declaration": true,
+        "outDir": "dist",
+        "resolveJsonModule": true,
+        "isolatedModules": true,
+        "jsx": "react-jsx",
+        "incremental": true,
+        "types": [
+            "bun-types" // add Bun global
+        ]
+    },
+    "include": ["src/**/*.ts"],
+    "exclude": ["node_modules"]
+}

packages/fonts/turbo.json

@@ -0,0 +1,9 @@
+{
+    "extends": ["//"],
+    "tasks": {
+        "generate": {
+            "inputs": ["bin/**/*", "package.json"],
+            "outputs": ["src/data/*.json", "dist/data/*.json"]
+        }
+    }
+}

packages/gitbook-v2/.gitignore

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

packages/gitbook-v2/CHANGELOG.md

@@ -1,5 +1,24 @@
 # 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

packages/gitbook-v2/next-env.d.ts

@@ -1,5 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
+/// <reference types="next/navigation-types/compat/navigation" />
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

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

@@ -1,18 +1,29 @@
-import { defineCloudflareConfig } from '@opennextjs/cloudflare';
-import r2IncrementalCache from '@opennextjs/cloudflare/overrides/incremental-cache/r2-incremental-cache';
-import { withRegionalCache } from '@opennextjs/cloudflare/overrides/incremental-cache/regional-cache';
-import doQueue from '@opennextjs/cloudflare/overrides/queue/do-queue';
-import doShardedTagCache from '@opennextjs/cloudflare/overrides/tag-cache/do-sharded-tag-cache';
+import type { OpenNextConfig } from '@opennextjs/cloudflare';
 
-export default defineCloudflareConfig({
-    incrementalCache: withRegionalCache(r2IncrementalCache, { mode: 'long-lived' }),
-    tagCache: doShardedTagCache({
-        baseShardSize: 12,
-        regionalCache: true,
-        shardReplication: {
-            numberOfSoftReplicas: 2,
-            numberOfHardReplicas: 1,
+export default {
+    default: {
+        override: {
+            wrapper: 'cloudflare-node',
+            converter: 'edge',
+            proxyExternalRequest: 'fetch',
+            queue: () => import('./openNext/queue/middleware').then((m) => m.default),
+            incrementalCache: () => import('./openNext/incrementalCache').then((m) => m.default),
+            tagCache: () => import('./openNext/tagCache/middleware').then((m) => m.default),
         },
-    }),
-    queue: doQueue,
-});
+    },
+    middleware: {
+        external: true,
+        override: {
+            wrapper: 'cloudflare-edge',
+            converter: 'edge',
+            proxyExternalRequest: 'fetch',
+            queue: () => import('./openNext/queue/middleware').then((m) => m.default),
+            incrementalCache: () => import('./openNext/incrementalCache').then((m) => m.default),
+            tagCache: () => import('./openNext/tagCache/middleware').then((m) => m.default),
+        },
+    },
+    dangerous: {
+        enableCacheInterception: true,
+    },
+    edgeExternals: ['node:crypto'],
+} satisfies OpenNextConfig;

packages/gitbook-v2/openNext/customWorkers/default.js

@@ -0,0 +1,36 @@
+import { runWithCloudflareRequestContext } from '../../.open-next/cloudflare/init.js';
+
+import { DurableObject } from 'cloudflare:workers';
+
+// Only needed to run locally, in prod we'll use the one from do.js
+export class R2WriteBuffer extends DurableObject {
+    writePromise;
+
+    async write(cacheKey, value) {
+        // We are already writing to this key
+        if (this.writePromise) {
+            return;
+        }
+
+        this.writePromise = this.env.NEXT_INC_CACHE_R2_BUCKET.put(cacheKey, value);
+        this.ctx.waitUntil(
+            this.writePromise.finally(() => {
+                this.writePromise = undefined;
+            })
+        );
+    }
+}
+
+export default {
+    async fetch(request, env, ctx) {
+        return runWithCloudflareRequestContext(request, env, ctx, async () => {
+            // We can't move the handler import to the top level, otherwise the runtime will not be properly initialized
+            const { handler } = await import(
+                '../../.open-next/server-functions/default/handler.mjs'
+            );
+
+            // - `Request`s are handled by the Next server
+            return handler(request, env, ctx);
+        });
+    },
+};

packages/gitbook-v2/openNext/customWorkers/defaultWrangler.jsonc

@@ -0,0 +1,163 @@
+{
+    "main": "default.js",
+    "name": "gitbook-open-v2-server",
+    "compatibility_date": "2025-04-14",
+    "compatibility_flags": [
+        "nodejs_compat",
+        "allow_importable_env",
+        "global_fetch_strictly_public"
+    ],
+    "observability": {
+        "enabled": true
+    },
+    "vars": {
+        "NEXT_CACHE_DO_QUEUE_DISABLE_SQLITE": "true"
+    },
+    "env": {
+        "dev": {
+            "vars": {
+                "STAGE": "dev"
+            },
+            "r2_buckets": [
+                {
+                    "binding": "NEXT_INC_CACHE_R2_BUCKET",
+                    "bucket_name": "gitbook-open-v2-cache-preview"
+                }
+            ],
+            "services": [
+                {
+                    "binding": "WORKER_SELF_REFERENCE",
+                    "service": "gitbook-open-v2-server-dev"
+                }
+            ],
+            "durable_objects": {
+                "bindings": [
+                    {
+                        "name": "WRITE_BUFFER",
+                        "class_name": "R2WriteBuffer"
+                    }
+                ]
+            },
+            "migrations": [
+                {
+                    "tag": "v1",
+                    "new_sqlite_classes": ["R2WriteBuffer"]
+                }
+            ]
+        },
+        "preview": {
+            "vars": {
+                "STAGE": "preview",
+                // Just as a test for the preview environment to check that everything works
+                "NEXT_PRIVATE_DEBUG_CACHE": "true"
+            },
+            "r2_buckets": [
+                {
+                    "binding": "NEXT_INC_CACHE_R2_BUCKET",
+                    "bucket_name": "gitbook-open-v2-cache-preview"
+                }
+            ],
+            "services": [
+                {
+                    "binding": "WORKER_SELF_REFERENCE",
+                    "service": "gitbook-open-v2-server-preview"
+                }
+            ],
+            "durable_objects": {
+                "bindings": [
+                    {
+                        "name": "WRITE_BUFFER",
+                        "class_name": "R2WriteBuffer",
+                        "script_name": "gitbook-open-v2-do-preview"
+                    },
+                    {
+                        "name": "NEXT_TAG_CACHE_DO_SHARDED",
+                        "class_name": "DOShardedTagCache",
+                        "script_name": "gitbook-open-v2-do-preview"
+                    },
+                    {
+                        "name": "NEXT_CACHE_DO_QUEUE",
+                        "class_name": "DOQueueHandler",
+                        "script_name": "gitbook-open-v2-do-preview"
+                    }
+                ]
+            }
+        },
+        "staging": {
+            "r2_buckets": [
+                {
+                    "binding": "NEXT_INC_CACHE_R2_BUCKET",
+                    "bucket_name": "gitbook-open-v2-cache-staging"
+                }
+            ],
+            "services": [
+                {
+                    "binding": "WORKER_SELF_REFERENCE",
+                    "service": "gitbook-open-v2-server-staging"
+                }
+            ],
+            "durable_objects": {
+                "bindings": [
+                    {
+                        "name": "WRITE_BUFFER",
+                        "class_name": "R2WriteBuffer",
+                        "script_name": "gitbook-open-v2-do-staging"
+                    },
+                    {
+                        "name": "NEXT_TAG_CACHE_DO_SHARDED",
+                        "class_name": "DOShardedTagCache",
+                        "script_name": "gitbook-open-v2-do-staging"
+                    },
+                    {
+                        "name": "NEXT_CACHE_DO_QUEUE",
+                        "class_name": "DOQueueHandler",
+                        "script_name": "gitbook-open-v2-do-staging"
+                    }
+                ]
+            },
+            "tail_consumers": [
+                {
+                    "service": "gitbook-x-staging-tail"
+                }
+            ]
+        },
+        "production": {
+            "r2_buckets": [
+                {
+                    "binding": "NEXT_INC_CACHE_R2_BUCKET",
+                    "bucket_name": "gitbook-open-v2-cache-production"
+                }
+            ],
+            "services": [
+                {
+                    "binding": "WORKER_SELF_REFERENCE",
+                    "service": "gitbook-open-v2-server-production"
+                }
+            ],
+            "durable_objects": {
+                "bindings": [
+                    {
+                        "name": "WRITE_BUFFER",
+                        "class_name": "R2WriteBuffer",
+                        "script_name": "gitbook-open-v2-do-production"
+                    },
+                    {
+                        "name": "NEXT_TAG_CACHE_DO_SHARDED",
+                        "class_name": "DOShardedTagCache",
+                        "script_name": "gitbook-open-v2-do-production"
+                    },
+                    {
+                        "name": "NEXT_CACHE_DO_QUEUE",
+                        "class_name": "DOQueueHandler",
+                        "script_name": "gitbook-open-v2-do-production"
+                    }
+                ]
+            },
+            "tail_consumers": [
+                {
+                    "service": "gitbook-x-prod-tail"
+                }
+            ]
+        }
+    }
+}

packages/gitbook-v2/openNext/customWorkers/do.js

@@ -0,0 +1,38 @@
+// This worker only purposes it to host the different DO that we will need in the other workers.
+import { DurableObject } from 'cloudflare:workers';
+
+// `use cache` could cause multiple writes to the same key to happen concurrently, there is a limit of 1 write per key/second
+// so we need to buffer writes to the R2 bucket to avoid hitting this limit.
+export class R2WriteBuffer extends DurableObject {
+    writePromise;
+
+    async write(cacheKey, value) {
+        // We are already writing to this key
+        if (this.writePromise) {
+            return;
+        }
+
+        this.writePromise = this.env.NEXT_INC_CACHE_R2_BUCKET.put(cacheKey, value);
+        this.ctx.waitUntil(
+            this.writePromise.finally(() => {
+                this.writePromise = undefined;
+            })
+        );
+    }
+}
+
+export { DOQueueHandler } from '../../.open-next/.build/durable-objects/queue.js';
+
+export { DOShardedTagCache } from '../../.open-next/.build/durable-objects/sharded-tag-cache.js';
+
+export default {
+    async fetch() {
+        // This worker does not handle any requests, it only provides Durable Objects
+        return new Response('This worker is not meant to handle requests directly', {
+            status: 400,
+            headers: {
+                'Content-Type': 'text/plain',
+            },
+        });
+    },
+};

packages/gitbook-v2/openNext/customWorkers/doWrangler.jsonc

@@ -0,0 +1,145 @@
+{
+    "main": "do.js",
+    "name": "gitbook-open-v2-do",
+    "compatibility_date": "2025-04-14",
+    "compatibility_flags": [
+        "nodejs_compat",
+        "allow_importable_env",
+        "global_fetch_strictly_public"
+    ],
+    "observability": {
+        "enabled": true
+    },
+    "env": {
+        "preview": {
+            "vars": {
+                "STAGE": "preview",
+                "NEXT_CACHE_DO_QUEUE_DISABLE_SQLITE": "true"
+            },
+            "r2_buckets": [
+                {
+                    "binding": "NEXT_INC_CACHE_R2_BUCKET",
+                    "bucket_name": "gitbook-open-v2-cache-preview"
+                }
+            ],
+            "services": [
+                {
+                    "binding": "WORKER_SELF_REFERENCE",
+                    "service": "gitbook-open-v2-preview"
+                }
+            ],
+            "durable_objects": {
+                "bindings": [
+                    {
+                        "name": "NEXT_CACHE_DO_QUEUE",
+                        "class_name": "DOQueueHandler"
+                    },
+                    {
+                        "name": "NEXT_TAG_CACHE_DO_SHARDED",
+                        "class_name": "DOShardedTagCache"
+                    },
+                    {
+                        "name": "WRITE_BUFFER",
+                        "class_name": "R2WriteBuffer"
+                    }
+                ]
+            },
+            "migrations": [
+                {
+                    "tag": "v1",
+                    "new_sqlite_classes": ["DOQueueHandler", "DOShardedTagCache", "R2WriteBuffer"]
+                }
+            ]
+        },
+        "staging": {
+            "vars": {
+                "STAGE": "staging",
+                "NEXT_CACHE_DO_QUEUE_DISABLE_SQLITE": "true"
+            },
+            "r2_buckets": [
+                {
+                    "binding": "NEXT_INC_CACHE_R2_BUCKET",
+                    "bucket_name": "gitbook-open-v2-cache-staging"
+                }
+            ],
+            "tail_consumers": [
+                {
+                    "service": "gitbook-x-staging-tail"
+                }
+            ],
+            "services": [
+                {
+                    "binding": "WORKER_SELF_REFERENCE",
+                    "service": "gitbook-open-v2-staging"
+                }
+            ],
+            "durable_objects": {
+                "bindings": [
+                    {
+                        "name": "NEXT_CACHE_DO_QUEUE",
+                        "class_name": "DOQueueHandler"
+                    },
+                    {
+                        "name": "NEXT_TAG_CACHE_DO_SHARDED",
+                        "class_name": "DOShardedTagCache"
+                    },
+                    {
+                        "name": "WRITE_BUFFER",
+                        "class_name": "R2WriteBuffer"
+                    }
+                ]
+            },
+            "migrations": [
+                {
+                    "tag": "v1",
+                    "new_sqlite_classes": ["DOQueueHandler", "DOShardedTagCache", "R2WriteBuffer"]
+                }
+            ]
+        },
+        "production": {
+            "vars": {
+                "NEXT_CACHE_DO_QUEUE_DISABLE_SQLITE": "true",
+                "STAGE": "production"
+            },
+            "r2_buckets": [
+                {
+                    "binding": "NEXT_INC_CACHE_R2_BUCKET",
+                    "bucket_name": "gitbook-open-v2-cache-production"
+                }
+            ],
+            "tail_consumers": [
+                {
+                    "service": "gitbook-x-prod-tail"
+                }
+            ],
+            "services": [
+                {
+                    "binding": "WORKER_SELF_REFERENCE",
+                    "service": "gitbook-open-v2-production"
+                }
+            ],
+            "durable_objects": {
+                "bindings": [
+                    {
+                        "name": "NEXT_CACHE_DO_QUEUE",
+                        "class_name": "DOQueueHandler"
+                    },
+                    {
+                        "name": "NEXT_TAG_CACHE_DO_SHARDED",
+                        "class_name": "DOShardedTagCache"
+                    },
+                    {
+                        "name": "WRITE_BUFFER",
+                        "class_name": "R2WriteBuffer"
+                    }
+                ]
+            },
+            "migrations": [
+                {
+                    "tag": "v1",
+                    "new_sqlite_classes": ["DOQueueHandler", "DOShardedTagCache", "R2WriteBuffer"]
+                }
+            ]
+        }
+    }
+}

packages/gitbook-v2/openNext/customWorkers/middleware.js

@@ -0,0 +1,42 @@
+import { WorkerEntrypoint } from 'cloudflare:workers';
+import { runWithCloudflareRequestContext } from '../../.open-next/cloudflare/init.js';
+
+import { handler as middlewareHandler } from '../../.open-next/middleware/handler.mjs';
+
+export { DOQueueHandler } from '../../.open-next/.build/durable-objects/queue.js';
+
+export { DOShardedTagCache } from '../../.open-next/.build/durable-objects/sharded-tag-cache.js';
+
+export default class extends WorkerEntrypoint {
+    async fetch(request) {
+        return runWithCloudflareRequestContext(request, this.env, this.ctx, async () => {
+            // - `Request`s are handled by the Next server
+            const reqOrResp = await middlewareHandler(request, this.env, this.ctx);
+            if (reqOrResp instanceof Response) {
+                return reqOrResp;
+            }
+
+            if (this.env.STAGE !== 'preview') {
+                // https://developers.cloudflare.com/workers/configuration/versions-and-deployments/gradual-deployments/#version-affinity
+                reqOrResp.headers.set(
+                    'Cloudflare-Workers-Version-Overrides',
+                    `gitbook-open-v2-${this.env.STAGE}="${this.env.WORKER_VERSION_ID}"`
+                );
+                return this.env.DEFAULT_WORKER?.fetch(reqOrResp, {
+                    cf: {
+                        cacheEverything: false,
+                    },
+                });
+            }
+            // If we are in preview mode, we need to send the request to the preview URL
+            const modifiedUrl = new URL(reqOrResp.url);
+            modifiedUrl.hostname = this.env.PREVIEW_HOSTNAME;
+            const nextRequest = new Request(modifiedUrl, reqOrResp);
+            return fetch(nextRequest, {
+                cf: {
+                    cacheEverything: false,
+                },
+            });
+        });
+    }
+}

packages/gitbook-v2/openNext/customWorkers/middlewareWrangler.jsonc

@@ -0,0 +1,216 @@
+{
+    "main": "middleware.js",
+    "name": "gitbook-open-v2",
+    "compatibility_date": "2025-04-14",
+    "compatibility_flags": [
+        "nodejs_compat",
+        "allow_importable_env",
+        "global_fetch_strictly_public"
+    ],
+    "assets": {
+        "directory": "../../.open-next/assets",
+        "binding": "ASSETS"
+    },
+    "observability": {
+        "enabled": true
+    },
+    "vars": {
+        "NEXT_CACHE_DO_QUEUE_DISABLE_SQLITE": "true"
+    },
+    "env": {
+        "dev": {
+            "vars": {
+                "STAGE": "dev",
+                "NEXT_PRIVATE_DEBUG_CACHE": "true"
+            },
+            "r2_buckets": [
+                {
+                    "binding": "NEXT_INC_CACHE_R2_BUCKET",
+                    "bucket_name": "gitbook-open-v2-cache-preview"
+                }
+            ],
+            "services": [
+                {
+                    "binding": "WORKER_SELF_REFERENCE",
+                    "service": "gitbook-open-v2-dev"
+                },
+                {
+                    "binding": "DEFAULT_WORKER",
+                    "service": "gitbook-open-v2-server-dev"
+                }
+            ]
+        },
+        "preview": {
+            "vars": {
+                "STAGE": "preview",
+                "PREVIEW_HOSTNAME": "TO_REPLACE",
+                "WORKER_VERSION_ID": "TO_REPLACE"
+            },
+            "r2_buckets": [
+                {
+                    "binding": "NEXT_INC_CACHE_R2_BUCKET",
+                    "bucket_name": "gitbook-open-v2-cache-preview"
+                }
+            ],
+            "services": [
+                {
+                    "binding": "WORKER_SELF_REFERENCE",
+                    "service": "gitbook-open-v2-preview"
+                },
+                {
+                    "binding": "DEFAULT_WORKER",
+                    "service": "gitbook-open-v2-server-preview"
+                }
+            ],
+            "durable_objects": {
+                "bindings": [
+                    {
+                        "name": "WRITE_BUFFER",
+                        "class_name": "R2WriteBuffer",
+                        "script_name": "gitbook-open-v2-do-preview"
+                    },
+                    {
+                        "name": "NEXT_TAG_CACHE_DO_SHARDED",
+                        "class_name": "DOShardedTagCache",
+                        "script_name": "gitbook-open-v2-do-preview"
+                    },
+                    {
+                        "name": "NEXT_CACHE_DO_QUEUE",
+                        "class_name": "DOQueueHandler",
+                        "script_name": "gitbook-open-v2-do-preview"
+                    }
+                ]
+            }
+        },
+        "staging": {
+            "vars": {
+                "STAGE": "staging",
+                "WORKER_VERSION_ID": "TO_REPLACE"
+            },
+            "routes": [
+                {
+                    "pattern": "open-2c.gitbook-staging.com/*",
+                    "zone_name": "gitbook-staging.com"
+                },
+                {
+                    "pattern": "static-2c.gitbook-staging.com/*",
+                    "zone_name": "gitbook-staging.com"
+                }
+            ],
+            "r2_buckets": [
+                {
+                    "binding": "NEXT_INC_CACHE_R2_BUCKET",
+                    "bucket_name": "gitbook-open-v2-cache-staging"
+                }
+            ],
+            "services": [
+                {
+                    "binding": "WORKER_SELF_REFERENCE",
+                    "service": "gitbook-open-v2-staging"
+                },
+                {
+                    "binding": "DEFAULT_WORKER",
+                    "service": "gitbook-open-v2-server-staging"
+                }
+            ],
+            "tail_consumers": [
+                {
+                    "service": "gitbook-x-staging-tail"
+                }
+            ],
+            "durable_objects": {
+                "bindings": [
+                    {
+                        "name": "WRITE_BUFFER",
+                        "class_name": "R2WriteBuffer",
+                        "script_name": "gitbook-open-v2-do-staging"
+                    },
+                    {
+                        "name": "NEXT_TAG_CACHE_DO_SHARDED",
+                        "class_name": "DOShardedTagCache",
+                        "script_name": "gitbook-open-v2-do-staging"
+                    },
+                    {
+                        "name": "NEXT_CACHE_DO_QUEUE",
+                        "class_name": "DOQueueHandler",
+                        "script_name": "gitbook-open-v2-do-staging"
+                    }
+                ]
+            },
+            "migrations": [
+                {
+                    "tag": "v1",
+                    "new_sqlite_classes": ["DOQueueHandler", "DOShardedTagCache"]
+                }
+            ]
+        },
+        "production": {
+            "vars": {
+                // This is a bit misleading, but it means that we can have 500 concurrent revalidations
+                // This means that we'll have up to 100 durable objects instance running at the same time
+                "MAX_REVALIDATE_CONCURRENCY": "100",
+                // Temporary variable to find the issue once deployed
+                // TODO: remove this once the issue is fixed
+                "DEBUG_CLOUDFLARE": "true",
+                "WORKER_VERSION_ID": "TO_REPLACE",
+                "STAGE": "production"
+            },
+            "routes": [
+                {
+                    "pattern": "open-2c.gitbook.com/*",
+                    "zone_name": "gitbook.com"
+                },
+                {
+                    "pattern": "static-2c.gitbook.com/*",
+                    "zone_name": "gitbook.com"
+                }
+            ],
+            "r2_buckets": [
+                {
+                    "binding": "NEXT_INC_CACHE_R2_BUCKET",
+                    "bucket_name": "gitbook-open-v2-cache-production"
+                }
+            ],
+            "services": [
+                {
+                    "binding": "WORKER_SELF_REFERENCE",
+                    "service": "gitbook-open-v2-production"
+                },
+                {
+                    "binding": "DEFAULT_WORKER",
+                    "service": "gitbook-open-v2-server-production"
+                }
+            ],
+            "tail_consumers": [
+                {
+                    "service": "gitbook-x-prod-tail"
+                }
+            ],
+            "durable_objects": {
+                "bindings": [
+                    {
+                        "name": "WRITE_BUFFER",
+                        "class_name": "R2WriteBuffer",
+                        "script_name": "gitbook-open-v2-do-production"
+                    },
+                    {
+                        "name": "NEXT_TAG_CACHE_DO_SHARDED",
+                        "class_name": "DOShardedTagCache",
+                        "script_name": "gitbook-open-v2-do-production"
+                    },
+                    {
+                        "name": "NEXT_CACHE_DO_QUEUE",
+                        "class_name": "DOQueueHandler",
+                        "script_name": "gitbook-open-v2-do-production"
+                    }
+                ]
+            },
+            "migrations": [
+                {
+                    "tag": "v1",
+                    "new_sqlite_classes": ["DOQueueHandler", "DOShardedTagCache"]
+                }
+            ]
+        }
+    }
+}

packages/gitbook-v2/openNext/customWorkers/script/updateWrangler.ts

@@ -0,0 +1,26 @@
+// In this script, we use the args from the cli to update the PREVIEW_URL vars in the wrangler config file for the middleware
+import fs from 'node:fs';
+import path from 'node:path';
+
+const wranglerConfigPath = path.join(__dirname, '../middlewareWrangler.jsonc');
+
+const file = fs.readFileSync(wranglerConfigPath, 'utf-8');
+
+const args = process.argv.slice(2);
+// The versionId is in the format xxx-xxx-xxx-xxx, we need the first part to reconstruct the preview URL
+const versionId = args[0];
+
+// The preview URL is in the format https://<versionId>-gitbook-open-v2-server-preview.gitbook.workers.dev
+const previewHostname = `${versionId.split('-')[0]}-gitbook-open-v2-server-preview.gitbook.workers.dev`;
+
+let updatedFile = file.replace(
+    /"PREVIEW_HOSTNAME": "TO_REPLACE"/,
+    `"PREVIEW_HOSTNAME": "${previewHostname}"`
+);
+
+updatedFile = updatedFile.replaceAll(
+    /"WORKER_VERSION_ID": "TO_REPLACE"/g,
+    `"WORKER_VERSION_ID": "${versionId}"`
+);
+
+fs.writeFileSync(wranglerConfigPath, updatedFile);

packages/gitbook-v2/openNext/incrementalCache.ts

@@ -0,0 +1,217 @@
+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';
+
+import type { DurableObjectNamespace, Rpc } from '@cloudflare/workers-types';
+
+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');
+                        const result = (await localCacheEntry.json()) as WithLastModified<
+                            CacheValue<CacheType>
+                        >;
+                        return this.returnNullOn404(result);
+                    }
+
+                    const r2Object = await r2.get(cacheKey);
+                    if (!r2Object) return null;
+
+                    span.setAttribute('cacheHit', 'r2');
+                    return this.returnNullOn404({
+                        value: await r2Object.json(),
+                        lastModified: r2Object.uploaded.getTime(),
+                    });
+                } catch (e) {
+                    console.error('Failed to get from cache', e);
+                    return null;
+                }
+            }
+        );
+    }
+
+    //TODO: This is a workaround to handle 404 responses in the cache.
+    // It should be handled by OpenNext cache interception directly. This should be removed once OpenNext cache interception is fixed.
+    returnNullOn404<CacheType extends CacheEntryType = 'cache'>(
+        cacheEntry: WithLastModified<CacheValue<CacheType>> | null
+    ): WithLastModified<CacheValue<CacheType>> | null {
+        if (!cacheEntry?.value) return null;
+        if ('meta' in cacheEntry.value && cacheEntry.value.meta?.status === 404) {
+            return null;
+        }
+        return cacheEntry;
+    }
+
+    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 localCache = await this.getCacheInstance();
+
+                try {
+                    await this.writeToR2(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 writeToR2(key: string, value: string): Promise<void> {
+        const env = getCloudflareContext().env as {
+            WRITE_BUFFER: DurableObjectNamespace<
+                Rpc.DurableObjectBranded & {
+                    write: (key: string, value: string) => Promise<void>;
+                }
+            >;
+        };
+        const id = env.WRITE_BUFFER.idFromName(key);
+
+        // A stub is a client used to invoke methods on the Durable Object
+        const stub = env.WRITE_BUFFER.get(id);
+
+        await stub.write(key, value);
+    }
+
+    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/openNext/queue/middleware.ts

@@ -0,0 +1,14 @@
+import { trace } from '@/lib/tracing';
+import type { Queue } from '@opennextjs/aws/types/overrides.js';
+import { getCloudflareContext } from '@opennextjs/cloudflare';
+import doQueue from '@opennextjs/cloudflare/overrides/queue/do-queue';
+
+export default {
+    name: 'GitbookISRQueue',
+    send: async (msg) => {
+        return trace({ operation: 'gitbookISRQueueSend', name: msg.MessageBody.url }, async () => {
+            const { ctx } = getCloudflareContext();
+            ctx.waitUntil(doQueue.send(msg));
+        });
+    },
+} satisfies Queue;

packages/gitbook-v2/openNext/queue/server.ts

@@ -0,0 +1,9 @@
+import type { Queue } from '@opennextjs/aws/types/overrides.js';
+
+export default {
+    name: 'GitbookISRQueue',
+    send: async (msg) => {
+        // We should never reach this point in the server. If that's the case, we should log it.
+        console.warn('GitbookISRQueue: send called on server side, this should not happen.', msg);
+    },
+} satisfies Queue;

packages/gitbook-v2/openNext/tagCache/middleware.ts

@@ -0,0 +1,81 @@
+import { trace } from '@/lib/tracing';
+import type { NextModeTagCache } from '@opennextjs/aws/types/overrides.js';
+import doShardedTagCache from '@opennextjs/cloudflare/overrides/tag-cache/do-sharded-tag-cache';
+import { softTagFilter } from '@opennextjs/cloudflare/overrides/tag-cache/tag-cache-filter';
+
+const originalTagCache = doShardedTagCache({
+    baseShardSize: 12,
+    regionalCache: true,
+    // We can probably increase this value even further
+    regionalCacheTtlSec: 60,
+    shardReplication: {
+        numberOfSoftReplicas: 2,
+        numberOfHardReplicas: 1,
+        regionalReplication: {
+            defaultRegion: 'enam',
+        },
+    },
+});
+
+export default {
+    name: 'GitbookTagCache',
+    mode: 'nextMode',
+    getLastRevalidated: async (tags: string[]) => {
+        const tagsToCheck = tags.filter(softTagFilter);
+        if (tagsToCheck.length === 0) {
+            // If we reach here, it probably means that there is an issue that we'll need to address.
+            console.warn(
+                'getLastRevalidated - No valid tags to check for last revalidation, original tags:',
+                tags
+            );
+            return 0; // If no tags to check, return 0
+        }
+        return trace(
+            {
+                operation: 'gitbookTagCacheGetLastRevalidated',
+                name: tagsToCheck.join(', '),
+            },
+            async () => {
+                return await originalTagCache.getLastRevalidated(tagsToCheck);
+            }
+        );
+    },
+    hasBeenRevalidated: async (tags: string[], lastModified?: number) => {
+        const tagsToCheck = tags.filter(softTagFilter);
+        if (tagsToCheck.length === 0) {
+            // If we reach here, it probably means that there is an issue that we'll need to address.
+            console.warn(
+                'hasBeenRevalidated - No valid tags to check for revalidation, original tags:',
+                tags
+            );
+            return false; // If no tags to check, return false
+        }
+        return trace(
+            {
+                operation: 'gitbookTagCacheHasBeenRevalidated',
+                name: tagsToCheck.join(', '),
+            },
+            async () => {
+                const result = await originalTagCache.hasBeenRevalidated(tagsToCheck, lastModified);
+                return result;
+            }
+        );
+    },
+    writeTags: async (tags: string[]) => {
+        return trace(
+            {
+                operation: 'gitbookTagCacheWriteTags',
+                name: tags.join(', '),
+            },
+            async () => {
+                const tagsToWrite = tags.filter(softTagFilter);
+                if (tagsToWrite.length === 0) {
+                    console.warn('writeTags - No valid tags to write');
+                    return; // If no tags to write, exit early
+                }
+                // Write only the filtered tags
+                await originalTagCache.writeTags(tagsToWrite);
+            }
+        );
+    },
+} satisfies NextModeTagCache;

packages/gitbook-v2/package.json

@@ -1,23 +1,24 @@
 {
     "name": "gitbook-v2",
-    "version": "0.2.5",
+    "version": "0.3.0",
     "private": true,
     "dependencies": {
-        "next": "canary",
+        "@gitbook/api": "catalog:",
+        "@gitbook/cache-tags": "workspace:*",
+        "@opennextjs/cloudflare": "1.2.1",
+        "@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": "*",
-        "@gitbook/cache-tags": "workspace:*",
-        "@sindresorhus/fnv1a": "^3.1.0",
+        "rison": "^0.1.1",
         "server-only": "^0.0.1",
         "warn-once": "^0.1.1",
-        "rison": "^0.1.1",
-        "jwt-decode": "^4.0.0",
-        "assert-never": "^1.2.1"
+        "object-identity": "^0.1.2"
     },
     "devDependencies": {
         "gitbook": "*",
-        "@opennextjs/cloudflare": "^1.0.0-beta.3",
         "@types/rison": "^0.0.9",
         "tailwindcss": "^3.4.0",
         "postcss": "^8"
@@ -29,7 +30,9 @@
         "build:v2": "next build",
         "start": "next start",
         "build:v2:cloudflare": "opennextjs-cloudflare build",
-        "dev:v2:cloudflare": "wrangler dev --port 8771",
+        "dev:v2:cloudflare": "wrangler dev --port 8771 --env preview",
+        "dev:v2:cf:middleware": "wrangler dev --port 8771 --inspector-port 9230 --env dev --config ./openNext/customWorkers/middlewareWrangler.jsonc",
+        "dev:v2:cf:server": "wrangler dev --port 8772 --env dev --config ./openNext/customWorkers/defaultWrangler.jsonc",
         "unit": "bun test",
         "typecheck": "tsc --noEmit"
     }

packages/gitbook-v2/src/app/global-error.tsx

@@ -0,0 +1,18 @@
+'use client';
+
+import NextError from 'next/error';
+
+export default function GlobalError({
+    error,
+}: {
+    error: Error & { digest?: string };
+}) {
+    console.error('Global error:', error);
+    return (
+        <html lang="en">
+            <body>
+                <NextError statusCode={undefined as any} />
+            </body>
+        </html>
+    );
+}

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

@@ -0,0 +1,14 @@
+import type { NextRequest } from 'next/server';
+
+import { serveLLMsFullTxt } from '@/routes/llms-full';
+import { type RouteLayoutParams, getStaticSiteContext } from '@v2/app/utils';
+
+export const dynamic = 'force-static';
+
+export async function GET(
+    _request: NextRequest,
+    { params }: { params: Promise<RouteLayoutParams> }
+) {
+    const { context } = await getStaticSiteContext(await params);
+    return serveLLMsFullTxt(context);
+}

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

@@ -1,4 +1,5 @@
 import { getVisitorAuthClaims, getVisitorAuthClaimsFromToken } from '@/lib/adaptive';
+import { getDynamicCustomizationSettings } from '@/lib/customization';
 import type { SiteAPIToken } from '@gitbook/api';
 import { type SiteURLData, fetchSiteContextByURLLookup, getBaseContext } from '@v2/lib/context';
 import { jwtDecode } from 'jwt-decode';
@@ -67,6 +68,8 @@ export async function getDynamicSiteContext(params: RouteLayoutParams) {
         siteURLData
     );
 
+    context.customization = await getDynamicCustomizationSettings(context.customization);
+
     return {
         context,
         visitorAuthClaims: getVisitorAuthClaims(siteURLData),

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

@@ -0,0 +1,80 @@
+import { describe, expect, it } from 'bun:test';
+import { withStableRef } from './cache';
+
+describe('withStableRef', () => {
+    it('should return primitive values as is', () => {
+        const toStableRef = withStableRef();
+
+        expect(toStableRef(42)).toBe(42);
+        expect(toStableRef('hello')).toBe('hello');
+        expect(toStableRef(true)).toBe(true);
+        expect(toStableRef(null)).toBe(null);
+        expect(toStableRef(undefined)).toBe(undefined);
+    });
+
+    it('should return the same reference for identical objects', () => {
+        const toStableRef = withStableRef();
+
+        const obj1 = { a: 1, b: 2 };
+        const obj2 = { a: 1, b: 2 };
+
+        const ref1 = toStableRef(obj1);
+        const ref2 = toStableRef(obj2);
+
+        expect(ref1).toBe(ref2);
+        expect(ref1).toBe(obj1);
+        expect(ref1).not.toBe(obj2);
+    });
+
+    it('should return the same reference for identical arrays', () => {
+        const toStableRef = withStableRef();
+
+        const arr1 = [1, 2, 3];
+        const arr2 = [1, 2, 3];
+
+        const ref1 = toStableRef(arr1);
+        const ref2 = toStableRef(arr2);
+
+        expect(ref1).toBe(ref2);
+        expect(ref1).toBe(arr1);
+        expect(ref1).not.toBe(arr2);
+    });
+
+    it('should return the same reference for identical nested objects', () => {
+        const toStableRef = withStableRef();
+
+        const obj1 = { a: { b: 1 }, c: [2, 3] };
+        const obj2 = { a: { b: 1 }, c: [2, 3] };
+
+        const ref1 = toStableRef(obj1);
+        const ref2 = toStableRef(obj2);
+
+        expect(ref1).toBe(ref2);
+        expect(ref1).toBe(obj1);
+        expect(ref1).not.toBe(obj2);
+    });
+
+    it('should return different references for different objects', () => {
+        const toStableRef = withStableRef();
+
+        const obj1 = { a: 1 };
+        const obj2 = { a: 2 };
+
+        const ref1 = toStableRef(obj1);
+        const ref2 = toStableRef(obj2);
+
+        expect(ref1).not.toBe(ref2);
+    });
+
+    it('should maintain reference stability across multiple calls', () => {
+        const toStableRef = withStableRef();
+
+        const obj = { a: 1 };
+        const ref1 = toStableRef(obj);
+        const ref2 = toStableRef(obj);
+        const ref3 = toStableRef(obj);
+
+        expect(ref1).toBe(ref2);
+        expect(ref2).toBe(ref3);
+    });
+});

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

@@ -0,0 +1,59 @@
+import { identify } from 'object-identity';
+import * as React from 'react';
+
+/**
+ * Equivalent to `React.cache` but with support for non-primitive arguments.
+ * As `React.cache` only uses `Object.is` to compare arguments, it will not work with non-primitive arguments.
+ */
+export function cache<Args extends any[], Return>(fn: (...args: Args) => Return) {
+    const cached = React.cache(fn);
+
+    return (...args: Args) => {
+        const toStableRef = getWithStableRef();
+        const stableArgs = args.map((value) => {
+            return toStableRef(value);
+        }) as Args;
+        return cached(...stableArgs);
+    };
+}
+
+/**
+ * To ensure memory is garbage collected between each request, we use a per-request cache to store the ref maps.
+ */
+const getWithStableRef = React.cache(withStableRef);
+
+/**
+ * Create a function that converts a value to a stable reference.
+ */
+export function withStableRef(): <T>(value: T) => T {
+    const reverseIndex = new WeakMap<object, string>();
+    const refIndex = new Map<string, object>();
+
+    return <T>(value: T) => {
+        if (isPrimitive(value)) {
+            return value;
+        }
+
+        const objectValue = value as object;
+        const index = reverseIndex.get(objectValue);
+        if (index !== undefined) {
+            return refIndex.get(index) as T;
+        }
+
+        const hash = identify(objectValue);
+        reverseIndex.set(objectValue, hash);
+
+        const existing = refIndex.get(hash);
+        if (existing !== undefined) {
+            return existing as T;
+        }
+
+        // first time we've seen this shape
+        refIndex.set(hash, objectValue);
+        return value;
+    };
+}
+
+function isPrimitive(value: any): boolean {
+    return value === null || typeof value !== 'object';
+}

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

@@ -19,6 +19,7 @@ import {
     getDataOrNull,
     throwIfDataError,
 } from '@v2/lib/data';
+import assertNever from 'assert-never';
 import { notFound } from 'next/navigation';
 import { assert } from 'ts-essentials';
 import { GITBOOK_URL } from './env';
@@ -164,7 +165,7 @@ export function getBaseContext(input: {
         // 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}${urlObject.search}`;
+            return `/url/${urlObject.host}${urlObject.pathname}${urlObject.search}${urlObject.hash}`;
         };
     }
 
@@ -242,19 +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) {
@@ -380,7 +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

@@ -11,15 +11,3 @@ export function getCloudflareContext() {
 
     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

@@ -1,4 +1,5 @@
 import { GitBookAPIError } from '@gitbook/api';
+import { unstable_cacheLife as cacheLife } from 'next/cache';
 import type { DataFetcherErrorData, DataFetcherResponse } from './types';
 
 export class DataFetcherError extends Error {
@@ -47,11 +48,7 @@ export function getDataOrNull<T>(
         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;
+    return ignoreDataFetcherErrors(response, ignoreErrors).data ?? null;
 }
 
 /**
@@ -93,6 +90,50 @@ export async function wrapDataFetcherError<T>(
     }
 }
 
+/**
+ * Wrap an async execution to handle errors and return a DataFetcherResponse.
+ * This should be used inside 'use cache' functions.
+ */
+export async function wrapCacheDataFetcherError<T>(
+    fn: () => Promise<T>
+): Promise<DataFetcherResponse<T>> {
+    const result = await wrapDataFetcherError(fn);
+    if (result.error && result.error.code >= 500) {
+        // We don't want to cache errors for too long.
+        // as the API might
+        cacheLife('minutes');
+    }
+    return result;
+}
+
+/**
+ * Ignore some data fetcher errors.
+ */
+export function ignoreDataFetcherErrors<T>(
+    response: DataFetcherResponse<T>,
+    ignoreErrors?: number[]
+): DataFetcherResponse<T>;
+export function ignoreDataFetcherErrors<T>(
+    response: Promise<DataFetcherResponse<T>>,
+    ignoreErrors?: number[]
+): Promise<DataFetcherResponse<T>>;
+export function ignoreDataFetcherErrors<T>(
+    response: DataFetcherResponse<T> | Promise<DataFetcherResponse<T>>,
+    ignoreErrors: number[] = [404]
+): DataFetcherResponse<T> | Promise<DataFetcherResponse<T>> {
+    if (response instanceof Promise) {
+        return response.then((result) => ignoreDataFetcherErrors(result, ignoreErrors));
+    }
+
+    if (response.error) {
+        if (ignoreErrors.includes(response.error.code)) {
+            return response;
+        }
+        throw new DataFetcherError(response.error.message, response.error.code);
+    }
+    return response;
+}
+
 /**
  * Get a data fetcher exposable error from a JS error.
  */

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

@@ -1,8 +1,7 @@
 export * from './api';
 export * from './types';
-export * from './pages';
 export * from './urls';
 export * from './errors';
 export * from './lookup';
-export * from './proxy';
 export * from './visitor';
+export * from './pages';

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

@@ -1,52 +1,46 @@
 import { race, tryCatch } from '@/lib/async';
 import { joinPath, joinPathWithBaseURL } from '@/lib/paths';
 import { trace } from '@/lib/tracing';
-import type { PublishedSiteContentLookup } from '@gitbook/api';
+import type { PublishedSiteContentLookup, SiteVisitorPayload } from '@gitbook/api';
 import { apiClient } from './api';
 import { getExposableError } from './errors';
 import type { DataFetcherResponse } from './types';
 import { getURLLookupAlternatives, stripURLSearch } from './urls';
 
-/**
- * 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: {
+interface LookupPublishedContentByUrlInput {
     url: string;
-    visitorAuthToken: string | null;
     redirectOnError: boolean;
     apiToken: string | null;
-}): Promise<DataFetcherResponse<PublishedSiteContentLookup>> {
+    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 lookupPublishedContentByUrl(
+    input: LookupPublishedContentByUrlInput
+): 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 api = await apiClient({ apiToken: input.apiToken });
-
+        const api = apiClient({ apiToken: input.apiToken });
         const callResult = await trace(
             {
-                operation: 'getPublishedContentByURL',
+                operation: 'resolvePublishedContentByUrl',
                 name: alternative.url,
             },
             () =>
                 tryCatch(
-                    api.urls.getPublishedContentByUrl(
+                    api.urls.resolvePublishedContentByUrl(
                         {
                             url: alternative.url,
-                            visitorAuthToken: input.visitorAuthToken ?? undefined,
+                            ...(input.visitorPayload ? { visitor: input.visitorPayload } : {}),
                             redirectOnError: input.redirectOnError,
-
-                            // As this endpoint is cached by our API, we version the request
-                            // to void getting stale data with missing properties.
-                            // this could be improved by ensuring our API cache layer is versioned
-                            // or invalidated when needed
-                            // @ts-expect-error - cacheVersion is not a real query param
-                            cacheVersion: 'v2',
                         },
-                        {
-                            signal,
-                        }
+                        { signal }
                     )
                 )
         );

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

@@ -1,52 +0,0 @@
-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

@@ -1,87 +0,0 @@
-/**
- * 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

@@ -1,15 +1,30 @@
-import type { JSONDocument, RevisionPageDocument, Space } from '@gitbook/api';
+import { waitUntil } from '@/lib/waitUntil';
+import type { JSONDocument, RevisionPageDocument } from '@gitbook/api';
+import type { GitBookSiteContext, GitBookSpaceContext } from '../context';
 import { getDataOrNull } from './errors';
-import type { GitBookDataFetcher } from './types';
 
 /**
  * Get the document for a page.
  */
 export async function getPageDocument(
-    dataFetcher: GitBookDataFetcher,
-    space: Space,
+    context: GitBookSpaceContext | GitBookSiteContext,
     page: RevisionPageDocument
 ): Promise<JSONDocument | null> {
+    const { dataFetcher, space } = context;
+
+    if (
+        'site' in context &&
+        (context.site.id === 'site_JOVzv' || context.site.id === 'site_IxAYj')
+    ) {
+        return getDataOrNull(
+            dataFetcher.getRevisionPageDocument({
+                spaceId: space.id,
+                revisionId: space.revision,
+                pageId: page.id,
+            })
+        );
+    }
+
     if (page.documentId) {
         return getDataOrNull(
             dataFetcher.getDocument({ spaceId: space.id, documentId: page.documentId })
@@ -26,5 +41,33 @@ export async function getPageDocument(
         );
     }
 
+    // Pre-fetch the document to start filling the cache before we migrate to this API.
+    if (process.env.NODE_ENV === 'development') {
+        // Disable for now to investigate side-effects
+        if (isInPercentRollout(space.id, 10) || process.env.VERCEL_ENV === 'preview') {
+            await waitUntil(
+                getDataOrNull(
+                    dataFetcher.getRevisionPageDocument({
+                        spaceId: space.id,
+                        revisionId: space.revision,
+                        pageId: page.id,
+                    })
+                )
+            );
+        }
+    }
+
     return null;
 }
+
+function isInPercentRollout(value: string, rollout: number) {
+    return getRandomPercent(value) < rollout;
+}
+
+function getRandomPercent(value: string) {
+    const hash = value.split('').reduce((acc, char) => {
+        return acc + char.charCodeAt(0);
+    }, 0);
+
+    return hash % 100;
+}