Continue

Co-authored-by: Samy Pessé <samypesse@gmail.com>

.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/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/fair-crews-wink.md

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

.changeset/fast-trees-battle.md

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

.changeset/forty-readers-mix.md

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

.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/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-hounds-sparkle.md

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

.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/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/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/violet-schools-care.md

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

.changeset/wise-gifts-smash.md

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

.github/CONTRIBUTING.md

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

.github/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:
@@ -55,6 +55,7 @@ runs:
             GITBOOK_INTEGRATIONS_HOST: ${{ inputs.opItem }}/GITBOOK_INTEGRATIONS_HOST
             GITBOOK_IMAGE_RESIZE_SIGNING_KEY: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_SIGNING_KEY
             GITBOOK_IMAGE_RESIZE_URL: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_URL
+            GITBOOK_IMAGE_RESIZE_MODE: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_MODE
             GITBOOK_ASSETS_PREFIX: ${{ inputs.opItem }}/GITBOOK_ASSETS_PREFIX
             GITBOOK_FONTS_URL: ${{ inputs.opItem }}/GITBOOK_FONTS_URL
         - name: Build worker
@@ -62,19 +63,76 @@ 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 }}
               accountId: ${{ inputs.accountId }}
               workingDirectory: ./
-              wranglerVersion: '3.112.0'
+              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/composite/deploy-vercel/action.yaml

@@ -54,6 +54,7 @@ runs:
             GITBOOK_INTEGRATIONS_HOST: ${{ inputs.opItem }}/GITBOOK_INTEGRATIONS_HOST
             GITBOOK_IMAGE_RESIZE_SIGNING_KEY: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_SIGNING_KEY
             GITBOOK_IMAGE_RESIZE_URL: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_URL
+            GITBOOK_IMAGE_RESIZE_MODE: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_MODE
             GITBOOK_ASSETS_PREFIX: ${{ inputs.opItem }}/GITBOOK_ASSETS_PREFIX
             GITBOOK_FONTS_URL: ${{ inputs.opItem }}/GITBOOK_FONTS_URL
         - name: Build Project Artifacts

.github/workflows/deploy-preview.yaml

@@ -152,7 +152,7 @@ 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:
@@ -200,7 +200,6 @@ jobs:
         name: Visual Testing v2 (Cloudflare)
         needs: deploy-v2-cloudflare
         timeout-minutes: 10
-        if: startsWith(github.ref_name, 'cloudflare/')
         steps:
             - name: Checkout
               uses: actions/checkout@v4
@@ -263,7 +262,6 @@ jobs:
         name: Visual Testing Customers v2 (Cloudflare)
         needs: deploy-v2-cloudflare
         timeout-minutes: 8
-        if: startsWith(github.ref_name, 'cloudflare/')
         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">
@@ -59,15 +59,15 @@ bun install
 4. Start your local development server.
 
 ```
-bun dev
+bun dev:v2
 ```
 
 5. Open a published GitBook space in your web browser, prefixing it with `http://localhost:3000/`.
 
 examples:
 
--   http://localhost:3000/docs.gitbook.com
--   http://localhost:3000/open-source.gitbook.io/midjourney
+-   http://localhost:3000/url/gitbook.com/docs
+-   http://localhost:3000/url/open-source.gitbook.io/midjourney
 
 Any published GitBook site can be accessed through your local development instance, and any updates you make to the codebase will be reflected in your browser.
 
@@ -150,11 +150,11 @@ 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"
     />

biome.json

@@ -20,7 +20,8 @@
             "**/.wrangler/**/*",
             "packages/openapi-parser/src/fixtures/**/*",
             "packages/emoji-codepoints/index.ts",
-            "packages/icons/src/data/*.json"
+            "packages/icons/src/data/*.json",
+            "packages/cache-do/worker-configuration.d.ts"
         ]
     },
     "formatter": {

package.json

@@ -7,12 +7,12 @@
         "turbo": "^2.5.0",
         "vercel": "^39.3.0"
     },
-    "packageManager": "bun@1.2.8",
+    "packageManager": "bun@1.2.11",
     "overrides": {
         "@codemirror/state": "6.4.1",
-        "react": "18.3.1",
-        "react-dom": "18.3.1",
-        "@gitbook/api": "0.109.0"
+        "@gitbook/api": "^0.119.0",
+        "react": "^19.0.0",
+        "react-dom": "^19.0.0"
     },
     "private": true,
     "scripts": {

packages/cache-do/package.json

@@ -21,10 +21,10 @@
     },
     "devDependencies": {
         "typescript": "^5.5.3",
-        "wrangler": "^3.112.0"
+        "wrangler": "^4.10.0"
     },
     "scripts": {
-        "generate": "wrangler types --experimental-include-runtime",
+        "generate": "wrangler types",
         "build": "tsc",
         "typecheck": "tsc --noEmit",
         "dev": "tsc -w",

packages/cache-do/tsconfig.json

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

packages/cache-tags/CHANGELOG.md

@@ -1,5 +1,11 @@
 # @gitbook/cache-tags
 
+## 0.3.1
+
+### Patch Changes
+
+- 77397ca: Fix version of @gitbook/api referenced in package.json
+
 ## 0.3.0
 
 ### Minor Changes

packages/cache-tags/package.json

@@ -8,9 +8,9 @@
             "default": "./dist/index.js"
         }
     },
-    "version": "0.3.0",
+    "version": "0.3.1",
     "dependencies": {
-        "@gitbook/api": "*",
+        "@gitbook/api": "^0.119.0",
         "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/gitbook-v2/.gitignore

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

packages/gitbook-v2/CHANGELOG.md

@@ -1,5 +1,31 @@
 # gitbook-v2
 
+## 0.3.0
+
+### Minor Changes
+
+- 3119066: Add support for reusable content across spaces.
+- 7d7806d: Pass SVG images through image resizing without resizing them to serve them from optimal host.
+
+### Patch Changes
+
+- 1c8d9fe: keep data cache in OpenNext between deployment
+- 778624a: Only resize images with supported extensions.
+- e6ddc0f: Fix URL in sitemap
+- 5e975ab: Fix code highlighting for HTTP
+- e15757d: Fix crash on Cloudflare by using latest stable version of Next.js instead of canary
+- 634e0b4: Improve error messages around undefined site sections.
+- 97b7c79: Increase logging around caching behaviour causing page crashes.
+- 3f29206: Update the regex for validating site redirect
+- dd043df: Revert investigation work around URL caches.
+
+## 0.2.5
+
+### Patch Changes
+
+- Updated dependencies [77397ca]
+  - @gitbook/cache-tags@0.3.1
+
 ## 0.2.4
 
 ### Patch Changes

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/next.config.mjs

@@ -7,10 +7,7 @@ const nextConfig = {
     experimental: {
         // This is needed to throw "forbidden" when the api token expired during revalidation
         authInterrupts: true,
-
-        // We don't use 'use cache' as it's not supported in OpenNext yet
-        // and instead we scope `unstable_cache` to the parameters of the function
-        useCache: false,
+        useCache: true,
 
         // Content is fully static, we can cache it in the session memory cache for a long time
         staleTimes: {
@@ -34,6 +31,7 @@ const nextConfig = {
         GITBOOK_ASSETS_PREFIX: process.env.GITBOOK_ASSETS_PREFIX,
         GITBOOK_SECRET: process.env.GITBOOK_SECRET,
         GITBOOK_IMAGE_RESIZE_SIGNING_KEY: process.env.GITBOOK_IMAGE_RESIZE_SIGNING_KEY,
+        GITBOOK_IMAGE_RESIZE_MODE: process.env.GITBOOK_IMAGE_RESIZE_MODE,
         GITBOOK_FONTS_URL: process.env.GITBOOK_FONTS_URL,
         GITBOOK_RUNTIME: process.env.GITBOOK_RUNTIME,
 
@@ -55,6 +53,24 @@ const nextConfig = {
             },
         ],
     },
+
+    async headers() {
+        return [
+            {
+                source: '/~gitbook/static/:path*',
+                headers: [
+                    {
+                        key: 'Cache-Control',
+                        value: 'public, max-age=31536000, immutable',
+                    },
+                    {
+                        key: 'Access-Control-Allow-Origin',
+                        value: '*',
+                    },
+                ],
+            },
+        ];
+    },
 };
 
 export default nextConfig;

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

@@ -1,18 +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 +1,127 @@
+{
+    "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"
+                }
+            ],
+            "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"
+                }
+            ],
+            "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"
+                }
+            ],
+            "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 +1,202 @@
+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');
+                        return localCacheEntry.json();
+                    }
+
+                    const r2Object = await r2.get(cacheKey);
+                    if (!r2Object) return null;
+
+                    span.setAttribute('cacheHit', 'r2');
+                    return {
+                        value: await r2Object.json(),
+                        lastModified: r2Object.uploaded.getTime(),
+                    };
+                } catch (e) {
+                    console.error('Failed to get from cache', e);
+                    return null;
+                }
+            }
+        );
+    }
+
+    async set<CacheType extends CacheEntryType = 'cache'>(
+        key: string,
+        value: CacheValue<CacheType>,
+        cacheType?: CacheType
+    ): Promise<void> {
+        const cacheKey = this.getR2Key(key, cacheType);
+        return trace(
+            {
+                operation: 'openNextIncrementalCacheSet',
+                name: cacheKey,
+            },
+            async (span) => {
+                span.setAttribute('cacheType', cacheType ?? 'cache');
+                const 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

@@ -1,22 +1,23 @@
 {
     "name": "gitbook-v2",
-    "version": "0.2.4",
+    "version": "0.3.0",
     "private": true,
     "dependencies": {
-        "next": "canary",
+        "@gitbook/api": "^0.119.0",
+        "@gitbook/cache-tags": "workspace:*",
+        "@opennextjs/cloudflare": "1.1.0",
+        "@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",
-        "server-only": "^0.0.1",
-        "warn-once": "^0.1.1",
         "rison": "^0.1.1",
-        "jwt-decode": "^4.0.0"
+        "server-only": "^0.0.1",
+        "warn-once": "^0.1.1"
     },
     "devDependencies": {
         "gitbook": "*",
-        "@opennextjs/cloudflare": "https://pkg.pr.new/opennextjs/opennextjs-cloudflare/@opennextjs/cloudflare@7b3b305",
         "@types/rison": "^0.0.9",
         "tailwindcss": "^3.4.0",
         "postcss": "^8"
@@ -28,7 +29,9 @@
         "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/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/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

@@ -98,6 +98,10 @@ export async function wrapDataFetcherError<T>(
  */
 export function getExposableError(error: Error): DataFetcherErrorData {
     if (error instanceof GitBookAPIError) {
+        if (error.code >= 500) {
+            throw error;
+        }
+
         return {
             code: error.code,
             message: error.errorMessage,
@@ -105,6 +109,10 @@ export function getExposableError(error: Error): DataFetcherErrorData {
     }
 
     if (error instanceof DataFetcherError) {
+        if (error.code >= 500) {
+            throw error;
+        }
+
         return {
             code: error.code,
             message: error.message,

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

@@ -4,5 +4,4 @@ export * from './pages';
 export * from './urls';
 export * from './errors';
 export * from './lookup';
-export * from './proxy';
 export * from './visitor';

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

@@ -1,55 +1,102 @@
 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 { GitBookAPI, 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;
+    visitorPayload: SiteVisitorPayload;
+}
+
+/**
+ * Lookup a content by its URL using the GitBook resolvePublishedContentByUrl API endpoint.
+ * To optimize caching, we try multiple lookup alternatives and return the first one that matches.
+ */
+export async function resolvePublishedContentByUrl(input: LookupPublishedContentByUrlInput) {
+    return lookupPublishedContentByUrl({
+        url: input.url,
+        fetchLookupAPIResult: ({ url, signal }) => {
+            const api = apiClient({ apiToken: input.apiToken });
+            return trace(
+                {
+                    operation: 'resolvePublishedContentByUrl',
+                    name: url,
+                },
+                () =>
+                    tryCatch(
+                        api.urls.resolvePublishedContentByUrl(
+                            {
+                                url,
+                                ...(input.visitorPayload ? { visitor: input.visitorPayload } : {}),
+                                redirectOnError: input.redirectOnError,
+                            },
+                            { signal }
+                        )
+                    )
+            );
+        },
+    });
+}
+
+/**
+ * Lookup a content by its URL using the GitBook getPublishedContentByUrl API endpoint.
+ * To optimize caching, we try multiple lookup alternatives and return the first one that matches.
+ *
+ * @deprecated use resolvePublishedContentByUrl.
+ *
+ */
+export async function getPublishedContentByURL(input: LookupPublishedContentByUrlInput) {
+    return lookupPublishedContentByUrl({
+        url: input.url,
+        fetchLookupAPIResult: ({ url, signal }) => {
+            const api = apiClient({ apiToken: input.apiToken });
+            return trace(
+                {
+                    operation: 'getPublishedContentByURL',
+                    name: url,
+                },
+                () =>
+                    tryCatch(
+                        api.urls.getPublishedContentByUrl(
+                            {
+                                url,
+                                visitorAuthToken: input.visitorPayload.jwtToken ?? undefined,
+                                redirectOnError: input.redirectOnError,
+                                // @ts-expect-error - cacheVersion is not a real query param
+                                cacheVersion: 'v2',
+                            },
+                            { signal }
+                        )
+                    )
+            );
+        },
+    });
+}
+
+type TryCatch<T> = ReturnType<typeof tryCatch<T>>;
+
+async function lookupPublishedContentByUrl(input: {
+    url: string;
+    fetchLookupAPIResult: (args: {
+        url: string;
+        signal: AbortSignal;
+    }) => TryCatch<Awaited<ReturnType<GitBookAPI['urls']['resolvePublishedContentByUrl']>>>;
 }): Promise<DataFetcherResponse<PublishedSiteContentLookup>> {
     const lookupURL = new URL(input.url);
     const url = stripURLSearch(lookupURL);
     const lookup = getURLLookupAlternatives(url);
 
     const result = await race(lookup.urls, async (alternative, { signal }) => {
-        const api = await apiClient({ apiToken: input.apiToken });
-
-        const callResult = await trace(
-            {
-                operation: 'getPublishedContentByURL',
-                name: alternative.url,
-            },
-            () =>
-                tryCatch(
-                    api.urls.getPublishedContentByUrl(
-                        {
-                            url: alternative.url,
-                            visitorAuthToken: input.visitorAuthToken ?? undefined,
-                            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,
-                        }
-                    )
-                )
-        );
+        const callResult = await input.fetchLookupAPIResult({
+            url: alternative.url,
+            signal,
+        });
 
         if (callResult.error) {
             if (alternative.primary) {

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 (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: (...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(...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/types.ts

@@ -189,5 +189,7 @@ export interface GitBookDataFetcher {
         input: api.AIMessageInput[];
         output: api.AIOutputFormat;
         model: api.AIModel;
+        instructions?: string;
+        previousResponseId?: string;
     }): AsyncGenerator<api.AIStreamResponse, void, unknown>;
 }

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

@@ -1,6 +1,6 @@
 import { withLeadingSlash, withTrailingSlash } from '@/lib/paths';
 import type { PublishedSiteContent } from '@gitbook/api';
-import { getProxyRequestIdentifier, isProxyRequest } from './proxy';
+import { getProxyRequestIdentifier, isProxyRequest } from '@v2/lib/proxy';
 
 /**
  * Get the appropriate base path for the visitor authentication cookie.

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

@@ -85,6 +85,15 @@ export const GITBOOK_IMAGE_RESIZE_URL = process.env.GITBOOK_IMAGE_RESIZE_URL ??
 export const GITBOOK_IMAGE_RESIZE_SIGNING_KEY =
     process.env.GITBOOK_IMAGE_RESIZE_SIGNING_KEY ?? null;
 
+/**
+ * Mode used for resizing images.
+ */
+export const GITBOOK_IMAGE_RESIZE_MODE = enforceEnum(
+    'GITBOOK_IMAGE_RESIZE_MODE',
+    process.env.GITBOOK_IMAGE_RESIZE_MODE || 'cdn-cgi',
+    ['cdn-cgi', 'cf-fetch']
+);
+
 /**
  * Endpoint where icons are served.
  */
@@ -100,3 +109,12 @@ export const GITBOOK_ICONS_TOKEN = process.env.GITBOOK_ICONS_TOKEN;
  * Secret used to validate requests from the GitBook app.
  */
 export const GITBOOK_SECRET = process.env.GITBOOK_SECRET ?? null;
+
+function enforceEnum<T extends string>(key: string, value: string, enumValues: T[]): T {
+    if (!enumValues.includes(value as T)) {
+        throw new Error(
+            `Invalid value for ${key}: "${value}", expected one of: ${enumValues.join(', ')}`
+        );
+    }
+    return value as T;
+}

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

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

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

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

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

@@ -1,34 +1,11 @@
 import 'server-only';
-
 import { GITBOOK_IMAGE_RESIZE_SIGNING_KEY, GITBOOK_IMAGE_RESIZE_URL } from '../env';
 import type { GitBookLinker } from '../links';
+import { SizableImageAction, checkIsSizableImageURL } from './checkIsSizableImageURL';
+import { getImageSize } from './resizer';
 import { type SignatureVersion, generateImageSignature } from './signatures';
 import type { ImageResizer } from './types';
 
-interface CloudflareImageJsonFormat {
-    width: number;
-    height: number;
-    original: {
-        file_size: number;
-        width: number;
-        height: number;
-        format: string;
-    };
-}
-
-/**
- * https://developers.cloudflare.com/images/image-resizing/resize-with-workers/
- */
-export interface CloudflareImageOptions {
-    format?: 'webp' | 'avif' | 'json' | 'jpeg';
-    fit?: 'scale-down' | 'contain' | 'cover' | 'crop' | 'pad';
-    width?: number;
-    height?: number;
-    dpr?: number;
-    anim?: boolean;
-    quality?: number;
-}
-
 /**
  * Create an image resizer for a rendering context.
  */
@@ -47,7 +24,7 @@ export function createImageResizer({
 
     return {
         getResizedImageURL: (urlInput) => {
-            if (!checkIsSizableImageURL(urlInput)) {
+            if (checkIsSizableImageURL(urlInput) === SizableImageAction.Skip) {
                 return null;
             }
 
@@ -87,7 +64,7 @@ export function createImageResizer({
         },
 
         getImageSize: async (input, options) => {
-            if (!checkIsSizableImageURL(input)) {
+            if (checkIsSizableImageURL(input) !== SizableImageAction.Resize) {
                 return null;
             }
 
@@ -106,124 +83,6 @@ export function createNoopImageResizer(): ImageResizer {
     };
 }
 
-/**
- * Check if a URL is an HTTP URL.
- */
-export function checkIsHttpURL(input: string | URL): boolean {
-    if (!URL.canParse(input)) {
-        return false;
-    }
-    const parsed = new URL(input);
-    return parsed.protocol === 'http:' || parsed.protocol === 'https:';
-}
-
-/**
- * Check if an image URL is resizable.
- * Skip it for non-http(s) URLs (data, etc).
- * Skip it for SVGs.
- * Skip it for GitBook images (to avoid recursion).
- */
-export function checkIsSizableImageURL(input: string): boolean {
-    if (!URL.canParse(input)) {
-        return false;
-    }
-
-    if (input.includes('/~gitbook/image')) {
-        return false;
-    }
-
-    const parsed = new URL(input);
-    if (parsed.pathname.endsWith('.svg') || parsed.pathname.endsWith('.avif')) {
-        return false;
-    }
-    if (!checkIsHttpURL(parsed)) {
-        return false;
-    }
-
-    return true;
-}
-
-/**
- * Get the size of an image.
- */
-export async function getImageSize(
-    input: string,
-    defaultSize: Partial<CloudflareImageOptions> = {}
-): Promise<{ width: number; height: number } | null> {
-    if (!checkIsSizableImageURL(input)) {
-        return null;
-    }
-
-    try {
-        const response = await resizeImage(input, {
-            // Abort the request after 2 seconds to avoid blocking rendering for too long
-            signal: AbortSignal.timeout(2000),
-            // Measure size and resize it to the most common size
-            // to optimize caching
-            ...defaultSize,
-            format: 'json',
-            anim: false,
-        });
-
-        const json = (await response.json()) as CloudflareImageJsonFormat;
-        return {
-            width: json.original.width,
-            height: json.original.height,
-        };
-    } catch (_error) {
-        return null;
-    }
-}
-
-/**
- * Execute a Cloudflare Image Resize operation on an image.
- */
-export async function resizeImage(
-    input: string,
-    options: CloudflareImageOptions & {
-        signal?: AbortSignal;
-    }
-): Promise<Response> {
-    const { signal, ...resizeOptions } = options;
-
-    const parsed = new URL(input);
-    if (parsed.protocol === 'data:') {
-        throw new Error('Cannot resize data: URLs');
-    }
-
-    if (parsed.hostname === 'localhost') {
-        throw new Error('Cannot resize localhost URLs');
-    }
-
-    // Since Cloudflare Images options on fetch are not supported on Cloudflare Pages,
-    // we need to use the Cloudflare Image Resize API directly.
-    if (!GITBOOK_IMAGE_RESIZE_URL) {
-        throw new Error('GITBOOK_IMAGE_RESIZE_URL is not set');
-    }
-
-    return await fetch(
-        `${GITBOOK_IMAGE_RESIZE_URL}${stringifyOptions(
-            resizeOptions
-        )}/${encodeURIComponent(input)}`,
-        {
-            headers: {
-                // Pass the `Accept` header, as Cloudflare uses this to validate the format.
-                Accept:
-                    resizeOptions.format === 'json'
-                        ? 'application/json'
-                        : `image/${resizeOptions.format || 'jpeg'}`,
-            },
-            signal,
-        }
-    );
-}
-
-function stringifyOptions(options: CloudflareImageOptions): string {
-    return Object.entries({ ...options }).reduce((rest, [key, value]) => {
-        return `${rest}${rest ? ',' : ''}${key}=${value}`;
-    }, '');
-}
-
 /**
  * Because of a bug in Cloudflare, 127.0.0.1 is replaced by localhost.
  * We protect against it by converting to a special token, and then parsing

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

@@ -0,0 +1,19 @@
+import { describe, expect, it } from 'bun:test';
+import { getImageResizingContextId } from './getImageResizingContextId';
+
+describe('getImageResizingContextId', () => {
+    it('should return proxy identifier for proxy requests', () => {
+        const proxyRequestURL = new URL('https://proxy.gitbook.site/sites/site_foo/hello/world');
+        expect(getImageResizingContextId(proxyRequestURL)).toBe('sites/site_foo');
+    });
+
+    it('should return preview identifier for preview requests', () => {
+        const previewRequestURL = new URL('https://preview/site_foo/hello/world');
+        expect(getImageResizingContextId(previewRequestURL)).toBe('site_foo');
+    });
+
+    it('should return host for regular requests', () => {
+        const regularRequestURL = new URL('https://example.com/docs/foo/hello/world');
+        expect(getImageResizingContextId(regularRequestURL)).toBe('example.com');
+    });
+});

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

@@ -1,4 +1,5 @@
-import { getProxyRequestIdentifier, isProxyRequest } from '../data';
+import { getPreviewRequestIdentifier, isPreviewRequest } from '@v2/lib/preview';
+import { getProxyRequestIdentifier, isProxyRequest } from '@v2/lib/proxy';
 
 /**
  * Get the site identifier to use for image resizing for an incoming request.
@@ -8,6 +9,9 @@ export function getImageResizingContextId(url: URL): string {
     if (isProxyRequest(url)) {
         return getProxyRequestIdentifier(url);
     }
+    if (isPreviewRequest(url)) {
+        return getPreviewRequestIdentifier(url);
+    }
 
     return url.host;
 }

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

@@ -3,3 +3,5 @@ export * from './createImageResizer';
 export * from './signatures';
 export * from './utils';
 export * from './getImageResizingContextId';
+export * from './resizer';
+export * from './checkIsSizableImageURL';

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

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

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

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

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

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

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

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

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

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

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

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

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

@@ -19,7 +19,7 @@ const siteGitBookIO = createLinker({
     siteBasePath: '/sitename/',
 });
 
-describe('toPathInContent', () => {
+describe('toPathInSpace', () => {
     it('should return the correct path', () => {
         expect(root.toPathInSpace('some/path')).toBe('/some/path');
         expect(variantInSection.toPathInSpace('some/path')).toBe('/section/variant/some/path');
@@ -29,6 +29,16 @@ describe('toPathInContent', () => {
         expect(root.toPathInSpace('/some/path')).toBe('/some/path');
         expect(variantInSection.toPathInSpace('/some/path')).toBe('/section/variant/some/path');
     });
+
+    it('should remove the trailing slash', () => {
+        expect(root.toPathInSpace('some/path/')).toBe('/some/path');
+        expect(variantInSection.toPathInSpace('some/path/')).toBe('/section/variant/some/path');
+    });
+
+    it('should not add a trailing slash', () => {
+        expect(root.toPathInSpace('')).toBe('');
+        expect(variantInSection.toPathInSpace('')).toBe('/section/variant');
+    });
 });
 
 describe('toPathInSite', () => {
@@ -36,6 +46,16 @@ describe('toPathInSite', () => {
         expect(root.toPathInSite('some/path')).toBe('/some/path');
         expect(siteGitBookIO.toPathInSite('some/path')).toBe('/sitename/some/path');
     });
+
+    it('should remove the trailing slash', () => {
+        expect(root.toPathInSite('some/path/')).toBe('/some/path');
+        expect(siteGitBookIO.toPathInSite('some/path/')).toBe('/sitename/some/path');
+    });
+
+    it('should not add a trailing slash', () => {
+        expect(root.toPathInSite('')).toBe('');
+        expect(siteGitBookIO.toPathInSite('')).toBe('/sitename');
+    });
 });
 
 describe('toRelativePathInSite', () => {

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

@@ -93,6 +93,11 @@ export function createLinker(
         },
 
         toAbsoluteURL(absolutePath: string): string {
+            // If the path is already a full URL, we return it as is.
+            if (URL.canParse(absolutePath)) {
+                return absolutePath;
+            }
+
             if (!servedOn.host) {
                 return absolutePath;
             }
@@ -123,5 +128,9 @@ export function createLinker(
 function joinPaths(prefix: string, path: string): string {
     const prefixPath = prefix.endsWith('/') ? prefix : `${prefix}/`;
     const suffixPath = path.startsWith('/') ? path.slice(1) : path;
-    return prefixPath + suffixPath;
+    return removeTrailingSlash(prefixPath + suffixPath);
+}
+
+function removeTrailingSlash(path: string): string {
+    return path.endsWith('/') ? path.slice(0, -1) : path;
 }

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

@@ -0,0 +1,21 @@
+import { describe, expect, it } from 'bun:test';
+import { getPreviewRequestIdentifier, isPreviewRequest } from './preview';
+
+describe('isPreviewRequest', () => {
+    it('should return true for preview requests', () => {
+        const previewRequestURL = new URL('https://preview/site_foo/hello/world');
+        expect(isPreviewRequest(previewRequestURL)).toBe(true);
+    });
+
+    it('should return false for non-preview requests', () => {
+        const nonPreviewRequestURL = new URL('https://example.com/docs/foo/hello/world');
+        expect(isPreviewRequest(nonPreviewRequestURL)).toBe(false);
+    });
+});
+
+describe('getPreviewRequestIdentifier', () => {
+    it('should return the correct identifier for preview requests', () => {
+        const previewRequestURL = new URL('https://preview/site_foo/hello/world');
+        expect(getPreviewRequestIdentifier(previewRequestURL)).toBe('site_foo');
+    });
+});

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

@@ -0,0 +1,13 @@
+/**
+ * Check if the request to the site is a preview request.
+ */
+export function isPreviewRequest(requestURL: URL): boolean {
+    return requestURL.host === 'preview';
+}
+
+export function getPreviewRequestIdentifier(requestURL: URL): string {
+    // For preview requests, we extract the site ID from the pathname
+    // e.g. https://preview/site_id/...
+    const pathname = requestURL.pathname.slice(1).split('/');
+    return pathname[0];
+}

packages/gitbook-v2/src/middleware.ts

@@ -10,15 +10,16 @@ import {
     type ResponseCookies,
     getPathScopedCookieName,
     getResponseCookiesForVisitorAuth,
-    getVisitorToken,
+    getVisitorData,
     normalizeVisitorAuthURL,
-} from '@/lib/visitor-token';
+} from '@/lib/visitors';
 import { serveResizedImage } from '@/routes/image';
 import {
     DataFetcherError,
     getPublishedContentByURL,
     getVisitorAuthBasePath,
     normalizeURL,
+    resolvePublishedContentByUrl,
     throwIfDataError,
 } from '@v2/lib/data';
 import { isGitBookAssetsHostURL, isGitBookHostURL } from '@v2/lib/env';
@@ -33,6 +34,15 @@ export const config = {
 
 type URLWithMode = { url: URL; mode: 'url' | 'url-host' };
 
+/**
+ * Temporary list of hosts to test adaptive content using the new resolution API.
+ */
+const ADAPTIVE_CONTENT_HOSTS = [
+    'docs.gitbook.com',
+    'adaptive-docs.gitbook-staging.com',
+    'enriched-content-playground.gitbook-staging.io',
+];
+
 export async function middleware(request: NextRequest) {
     try {
         const requestURL = new URL(request.url);
@@ -85,17 +95,22 @@ async function serveSiteRoutes(requestURL: URL, request: NextRequest) {
     //
     // Detect and extract the visitor authentication token from the request
     //
-    // @ts-ignore - request typing
-    const visitorToken = getVisitorToken({
+    const { visitorToken, unsignedClaims, visitorParamsCookie } = getVisitorData({
         cookies: request.cookies.getAll(),
         url: siteRequestURL,
     });
 
     const withAPIToken = async (apiToken: string | null) => {
+        const resolve = ADAPTIVE_CONTENT_HOSTS.includes(siteRequestURL.hostname)
+            ? resolvePublishedContentByUrl
+            : getPublishedContentByURL;
         const siteURLData = await throwIfDataError(
-            getPublishedContentByURL({
+            resolve({
                 url: siteRequestURL.toString(),
-                visitorAuthToken: visitorToken?.token ?? null,
+                visitorPayload: {
+                    jwtToken: visitorToken?.token ?? undefined,
+                    unsignedClaims,
+                },
                 // When the visitor auth token is pulled from the cookie, set redirectOnError when calling getPublishedContentByUrl to allow
                 // redirecting when the token is invalid as we could be dealing with stale token stored in the cookie.
                 // For example when the VA backend signature has changed but the token stored in the cookie is not yet expired.
@@ -106,7 +121,13 @@ async function serveSiteRoutes(requestURL: URL, request: NextRequest) {
                 apiToken,
             })
         );
-        const cookies: ResponseCookies = [];
+
+        const cookies: ResponseCookies = visitorParamsCookie
+            ? [
+                  // If visitor.* params were passed to the site URL, include a session cookie to persist these params across navigation.
+                  visitorParamsCookie,
+              ]
+            : [];
 
         //
         // Handle redirects

packages/gitbook-v2/src/pages/api/~gitbook/force-revalidate.ts

@@ -0,0 +1,49 @@
+import crypto from 'node:crypto';
+import type { NextApiRequest, NextApiResponse } from 'next';
+
+interface JsonBody {
+    // The paths need to be the rewritten one, `res.revalidate` call don't go through the middleware
+    paths: string[];
+}
+
+export default async function handler(req: NextApiRequest, res: NextApiResponse) {
+    // Only allow POST requests
+    if (req.method !== 'POST') {
+        return res.status(405).json({ error: 'Method not allowed' });
+    }
+    const signatureHeader = req.headers['x-gitbook-signature'] as string | undefined;
+    if (!signatureHeader) {
+        return res.status(400).json({ error: 'Missing signature header' });
+    }
+    // We cannot use env from `@/v2/lib/env` here as it make it crash because of the import "server-only" in the file.
+    if (process.env.GITBOOK_SECRET) {
+        try {
+            const computedSignature = crypto
+                .createHmac('sha256', process.env.GITBOOK_SECRET)
+                .update(JSON.stringify(req.body))
+                .digest('hex');
+
+            if (computedSignature === signatureHeader) {
+                const results = await Promise.allSettled(
+                    (req.body as JsonBody).paths.map((path) => {
+                        // biome-ignore lint/suspicious/noConsole: we want to log here
+                        console.log(`Revalidating path: ${path}`);
+                        return res.revalidate(path);
+                    })
+                );
+                return res.status(200).json({
+                    success: results.every((result) => result.status === 'fulfilled'),
+                    errors: results
+                        .filter((result) => result.status === 'rejected')
+                        .map((result) => (result as PromiseRejectedResult).reason),
+                });
+            }
+            return res.status(401).json({ error: 'Invalid signature' });
+        } catch (error) {
+            console.error('Error during revalidation:', error);
+            return res.status(400).json({ error: 'Invalid request or unable to parse JSON' });
+        }
+    }
+    // If no secret is set, we do not allow revalidation
+    return res.status(403).json({ error: 'Revalidation is disabled' });
+}

packages/gitbook-v2/wrangler.jsonc

@@ -1,8 +1,12 @@
 {
     "main": ".open-next/worker.js",
     "name": "gitbook-open-v2",
-    "compatibility_date": "2025-03-11",
-    "compatibility_flags": ["nodejs_compat", "allow_importable_env"],
+    "compatibility_date": "2025-04-14",
+    "compatibility_flags": [
+        "nodejs_compat",
+        "allow_importable_env",
+        "global_fetch_strictly_public"
+    ],
     "assets": {
         "directory": ".open-next/assets",
         "binding": "ASSETS"
@@ -10,15 +14,15 @@
     "observability": {
         "enabled": true
     },
+    "vars": {
+        "NEXT_CACHE_DO_QUEUE_DISABLE_SQLITE": "true",
+        "IS_PREVIEW": "false"
+    },
     "env": {
         "preview": {
-            "d1_databases": [
-                {
-                    "binding": "NEXT_CACHE_D1",
-                    "database_id": "f59ddb40-ad72-4312-9395-0ac6a129af8e",
-                    "database_name": "gitbook-open-v2-tags-preview"
-                }
-            ],
+            "vars": {
+                "IS_PREVIEW": "true"
+            },
             "r2_buckets": [
                 {
                     "binding": "NEXT_INC_CACHE_R2_BUCKET",
@@ -55,13 +59,6 @@
                     "bucket_name": "gitbook-open-v2-cache-staging"
                 }
             ],
-            "d1_databases": [
-                {
-                    "binding": "NEXT_CACHE_D1",
-                    "database_id": "9df62e39-1f35-4066-83aa-e9b8ed3ac8d5",
-                    "database_name": "gitbook-open-v2-tags-staging"
-                }
-            ],
             "services": [
                 {
                     "binding": "WORKER_SELF_REFERENCE",
@@ -97,6 +94,14 @@
             ]
         },
         "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"
+            },
             "routes": [
                 {
                     "pattern": "open-2c.gitbook.com/*",
@@ -113,13 +118,6 @@
                     "bucket_name": "gitbook-open-v2-cache-production"
                 }
             ],
-            "d1_databases": [
-                {
-                    "binding": "NEXT_CACHE_D1",
-                    "database_id": "a6f16fce-5f45-43a9-89a4-7b83ddf25b77",
-                    "database_name": "gitbook-open-v2-tags-production"
-                }
-            ],
             "services": [
                 {
                     "binding": "WORKER_SELF_REFERENCE",

packages/gitbook/CHANGELOG.md

@@ -1,5 +1,85 @@
 # gitbook
 
+## 0.12.0
+
+### Minor Changes
+
+- 8339e91: Fix images in reusable content across spaces.
+- 326e28e: Design tweaks to code blocks and OpenAPI pages
+- 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
+
+- c4ebb3f: Fix openapi-select hover in responses
+- aed79fd: Decrease rounding of header logo
+- 42ca7e1: Fix openapi CR preview
+- e6ddc0f: Fix URL in sitemap
+- 5e975ab: Fix code highlighting for HTTP
+- 5d504ff: Fix resolution of links in reusable contents
+- 95a1f65: Better print layouts: wrap code blocks & force table column auto-sizing
+- 0499966: Fix invalid sitemap.xml generated with relative URLs instead of absolute ones
+- 2a805cc: Change OpenAPI schema-optional from `info` to `tint` color
+- 580101d: Fix schemas disclosure label causing client error
+- 12a455d: Fix OpenAPI layout issues
+- 97b7c79: Increase logging around caching behaviour causing page crashes.
+- 373f18f: Prevent section group popovers from opening on click
+- 3f29206: Update the regex for validating site redirect
+- 0c973a3: Always link main logo to the root of the site
+- ae5f1ab: Change `Dropdown`s to use Radix's `DropdownMenu`
+- 0e201d5: Add border to filled sidebar on gradient theme
+- dd043df: Revert investigation work around URL caches.
+- 89a5816: Fix OpenAPI disclosure label ("Show properties") misalignment on mobile
+- Updated dependencies [c3f6b8c]
+- Updated dependencies [d00dc8c]
+- Updated dependencies [42ca7e1]
+- Updated dependencies [326e28e]
+- Updated dependencies [5e975ab]
+- Updated dependencies [f7a3470]
+- Updated dependencies [580101d]
+- Updated dependencies [20ebecb]
+- Updated dependencies [80cb52a]
+- Updated dependencies [cb5598d]
+- Updated dependencies [c6637b0]
+- Updated dependencies [a3ec264]
+  - @gitbook/colors@0.3.3
+  - @gitbook/openapi-parser@2.1.4
+  - @gitbook/react-openapi@1.3.0
+
+## 0.11.1
+
+### Patch Changes
+
+- Updated dependencies [ebc39e9]
+- Updated dependencies [b6b09d4]
+  - @gitbook/react-openapi@1.2.1
+
+## 0.11.0
+
+### Minor Changes
+
+- d67699a: Add OpenAPI Webhook block
+
+### Patch Changes
+
+- 4b8a621: Show sections tabs only if there is at least two sections
+- 8ed1bda: Translate OpenAPI blocks
+- 7588cfe: Improve OpenAPIResponses examples and schemas
+- Updated dependencies [eeb977f]
+- Updated dependencies [3363a18]
+- Updated dependencies [d67699a]
+- Updated dependencies [8ed1bda]
+- Updated dependencies [7588cfe]
+- Updated dependencies [ad1dc0b]
+  - @gitbook/react-openapi@1.2.0
+
+## 0.10.1
+
+### Patch Changes
+
+- Updated dependencies [77397ca]
+  - @gitbook/cache-tags@0.3.1
+
 ## 0.10.0
 
 ### Minor Changes
@@ -530,7 +610,7 @@
 - 4cbcc5b: Rollback of scalar modal while fixing perf issue
 - 3996110: Optimize images rendered in community ads
 - 133c3e7: Update design of Checkbox to be more consistent and readable
-- 5096f7f: Disable KV cache for docs.gitbook.com as a test, also disable it for change-request to improve consistency
+- 5096f7f: Disable KV cache for gitbook.com/docs as a test, also disable it for change-request to improve consistency
 - 0f1565c: Add optional env `GITBOOK_INTEGRATIONS_HOST` to configure the host serving the integrations
 - 2ff7ed1: Fix table of contents being visible on mobile when disabled at the page level
 - b075f0f: Fix accessibility of the table of contents by using `aria-current` instead of `aria-selected`

packages/gitbook/e2e/customers.spec.ts

@@ -10,18 +10,18 @@ const testCases: TestsCase[] = [
             { name: 'OpenAPI', url: '/snyk-api/reference/apps', run: waitForCookiesDialog },
         ],
     },
-    {
-        name: 'Nexthink',
-        contentBaseURL: 'https://docs.nexthink.com',
-        tests: [
-            {
-                name: 'Home',
-                url: '/',
-                screenshot: { waitForTOCScrolling: false },
-                run: waitForCookiesDialog,
-            },
-        ],
-    },
+    // {
+    //     name: 'Nexthink',
+    //     contentBaseURL: 'https://docs.nexthink.com',
+    //     tests: [
+    //         {
+    //             name: 'Home',
+    //             url: '/',
+    //             screenshot: { waitForTOCScrolling: false },
+    //             run: waitForCookiesDialog,
+    //         },
+    //     ],
+    // },
     {
         name: 'asiksupport-stg.dto.kemkes.go.id',
         contentBaseURL: 'https://asiksupport-stg.dto.kemkes.go.id',
@@ -157,11 +157,11 @@ const testCases: TestsCase[] = [
         contentBaseURL: 'https://wiki.redmodding.org',
         tests: [{ name: 'Home', url: '/' }],
     },
-    {
-        name: 'docs.cherry-ai.com',
-        contentBaseURL: 'https://docs.cherry-ai.com',
-        tests: [{ name: 'Home', url: '/', run: waitForCookiesDialog }],
-    },
+    // {
+    //     name: 'docs.cherry-ai.com',
+    //     contentBaseURL: 'https://docs.cherry-ai.com',
+    //     tests: [{ name: 'Home', url: '/', run: waitForCookiesDialog }],
+    // },
     {
         name: 'docs.snyk.io',
         contentBaseURL: 'https://docs.snyk.io',

packages/gitbook/e2e/internal.spec.ts

@@ -1,9 +1,11 @@
 import {
     CustomizationBackground,
     CustomizationCorners,
+    CustomizationDepth,
     CustomizationHeaderPreset,
     CustomizationIconsStyle,
     CustomizationSidebarListStyle,
+    CustomizationThemeMode,
 } from '@gitbook/api';
 import { expect } from '@playwright/test';
 import jwt from 'jsonwebtoken';
@@ -12,7 +14,7 @@ import {
     VISITOR_TOKEN_COOKIE,
     getVisitorAuthCookieName,
     getVisitorAuthCookieValue,
-} from '@/lib/visitor-token';
+} from '@/lib/visitors';
 
 import { getSiteAPIToken } from '../tests/utils';
 import {
@@ -111,24 +113,24 @@ const testCases: TestsCase[] = [
                 name: 'Customized variant titles are displayed',
                 url: '',
                 run: async (page) => {
-                    const spaceDrowpdown = page
+                    const spaceDropdown = page
                         .locator('[data-testid="space-dropdown-button"]')
                         .locator('visible=true');
-                    await spaceDrowpdown.click();
+                    await spaceDropdown.click();
 
                     const variantSelectionDropdown = page.locator(
-                        'css=[data-testid="space-dropdown-button"] + div'
+                        'css=[data-testid="dropdown-menu"]'
                     );
                     // the customized space title
                     await expect(
-                        variantSelectionDropdown.getByRole('link', {
+                        variantSelectionDropdown.getByRole('menuitem', {
                             name: 'Multi-Variants',
                         })
                     ).toBeVisible();
 
                     // the NON-customized space title
                     await expect(
-                        variantSelectionDropdown.getByRole('link', {
+                        variantSelectionDropdown.getByRole('menuitem', {
                             name: 'RFCs',
                         })
                     ).toBeVisible();
@@ -145,14 +147,17 @@ const testCases: TestsCase[] = [
                 url: 'api-multi-versions/reference/api-reference/pets',
                 screenshot: false,
                 run: async (page) => {
-                    const spaceDrowpdown = await page
+                    const spaceDropdown = await page
                         .locator('[data-testid="space-dropdown-button"]')
                         .locator('visible=true');
-                    await spaceDrowpdown.click();
+                    await spaceDropdown.click();
 
+                    const variantSelectionDropdown = page.locator(
+                        'css=[data-testid="dropdown-menu"]'
+                    );
                     // Click the second variant in the dropdown
-                    await page
-                        .getByRole('link', {
+                    await variantSelectionDropdown
+                        .getByRole('menuitem', {
                             name: '2.0',
                         })
                         .click();
@@ -168,14 +173,18 @@ const testCases: TestsCase[] = [
                 url: 'api-multi-versions-share-links/8tNo6MeXg7CkFMzSSz81/reference/api-reference/pets',
                 screenshot: false,
                 run: async (page) => {
-                    const spaceDrowpdown = await page
+                    const spaceDropdown = await page
                         .locator('[data-testid="space-dropdown-button"]')
                         .locator('visible=true');
-                    await spaceDrowpdown.click();
+                    await spaceDropdown.click();
+
+                    const variantSelectionDropdown = page.locator(
+                        'css=[data-testid="dropdown-menu"]'
+                    );
 
                     // Click the second variant in the dropdown
-                    await page
-                        .getByRole('link', {
+                    await variantSelectionDropdown
+                        .getByRole('menuitem', {
                             name: '2.0',
                         })
                         .click();
@@ -205,14 +214,18 @@ const testCases: TestsCase[] = [
                     return `api-multi-versions-va/reference/api-reference/pets?jwt_token=${token}`;
                 },
                 run: async (page) => {
-                    const spaceDrowpdown = await page
+                    const spaceDropdown = await page
                         .locator('[data-testid="space-dropdown-button"]')
                         .locator('visible=true');
-                    await spaceDrowpdown.click();
+                    await spaceDropdown.click();
+
+                    const variantSelectionDropdown = page.locator(
+                        'css=[data-testid="dropdown-menu"]'
+                    );
 
                     // Click the second variant in the dropdown
-                    await page
-                        .getByRole('link', {
+                    await variantSelectionDropdown
+                        .getByRole('menuitem', {
                             name: '2.0',
                         })
                         .click();
@@ -258,7 +271,7 @@ const testCases: TestsCase[] = [
     },
     {
         name: 'GitBook',
-        contentBaseURL: 'https://docs.gitbook.com',
+        contentBaseURL: 'https://gitbook.com/docs/',
         tests: [
             {
                 name: 'Home',
@@ -419,6 +432,38 @@ const testCases: TestsCase[] = [
             },
         ],
     },
+    {
+        name: 'llms.txt',
+        skip: process.env.ARGOS_BUILD_NAME !== 'v2-vercel',
+        contentBaseURL: 'https://gitbook.gitbook.io/test-gitbook-open/',
+        tests: [
+            {
+                name: 'llms.txt',
+                url: 'llms.txt',
+                screenshot: false,
+                run: async (_page, response) => {
+                    expect(response?.status()).toBe(200);
+                    expect(response?.headers()['content-type']).toContain('text/markdown');
+                },
+            },
+        ],
+    },
+    {
+        name: 'llms-full.txt',
+        skip: process.env.ARGOS_BUILD_NAME !== 'v2-vercel',
+        contentBaseURL: 'https://gitbook.gitbook.io/test-gitbook-open/',
+        tests: [
+            {
+                name: 'llms-full.txt',
+                url: 'llms-full.txt',
+                screenshot: false,
+                run: async (_page, response) => {
+                    expect(response?.status()).toBe(200);
+                    expect(response?.headers()['content-type']).toContain('text/markdown');
+                },
+            },
+        ],
+    },
     {
         name: 'Site subdirectory (proxy)',
         skip: process.env.ARGOS_BUILD_NAME !== 'v2-vercel',
@@ -637,6 +682,16 @@ const testCases: TestsCase[] = [
                 url: 'page-options/page-with-cover',
                 run: waitForCookiesDialog,
             },
+            {
+                name: 'With cover for dark mode',
+                url: `page-options/page-with-dark-cover${getCustomizationURL({
+                    themes: {
+                        default: CustomizationThemeMode.Dark,
+                        toggeable: false,
+                    },
+                })}`,
+                run: waitForCookiesDialog,
+            },
             {
                 name: 'With hero cover',
                 url: 'page-options/page-with-hero-cover',
@@ -806,6 +861,16 @@ const testCases: TestsCase[] = [
                 }),
                 run: waitForCookiesDialog,
             },
+            {
+                name: `With flat and circular corners - Theme mode ${themeMode}`,
+                url: getCustomizationURL({
+                    styling: {
+                        depth: CustomizationDepth.Flat,
+                        corners: CustomizationCorners.Circular,
+                    },
+                }),
+                run: waitForCookiesDialog,
+            },
         ]),
     },
     {

packages/gitbook/e2e/util.ts

@@ -3,6 +3,7 @@ import {
     CustomizationBackground,
     CustomizationCorners,
     CustomizationDefaultFont,
+    CustomizationDepth,
     type CustomizationHeaderItem,
     CustomizationHeaderPreset,
     CustomizationIconsStyle,
@@ -168,6 +169,7 @@ export function runTestCases(testCases: TestsCase[]) {
                               new URL(testEntryPathname, testCase.contentBaseURL).toString()
                           )
                         : getTestURL(testEntryPathname);
+
                     if (testEntry.cookies) {
                         await context.addCookies(
                             testEntry.cookies.map((cookie) => ({
@@ -219,10 +221,10 @@ export function runTestCases(testCases: TestsCase[]) {
                                 fullPage: testEntry.fullPage ?? false,
                                 beforeScreenshot: async ({ runStabilization }) => {
                                     await runStabilization();
-                                    await waitForIcons(page);
                                     if (screenshotOptions?.waitForTOCScrolling !== false) {
                                         await waitForTOCScrolling(page);
                                     }
+                                    await waitForIcons(page);
                                 },
                             });
                         }
@@ -277,6 +279,7 @@ export function getCustomizationURL(partial: DeepPartial<SiteCustomizationSettin
             dangerColor: { light: '#FB2C36', dark: '#FB2C36' },
             successColor: { light: '#00C950', dark: '#00C950' },
             corners: CustomizationCorners.Rounded,
+            depth: CustomizationDepth.Subtle,
             font: CustomizationDefaultFont.Inter,
             background: CustomizationBackground.Plain,
             icons: CustomizationIconsStyle.Regular,
@@ -345,61 +348,78 @@ export function getCustomizationURL(partial: DeepPartial<SiteCustomizationSettin
  */
 async function waitForIcons(page: Page) {
     await page.waitForFunction(() => {
-        const urls = new Set<string>();
+        const urlStates: Record<
+            string,
+            { state: 'pending'; uri: null } | { state: 'loaded'; uri: string }
+        > = (window as any).__ICONS_STATES__ || {};
+        (window as any).__ICONS_STATES__ = urlStates;
+
+        const fetchSvgAsDataUri = async (url: string): Promise<string> => {
+            const response = await fetch(url);
+            if (!response.ok) {
+                throw new Error(`Failed to fetch SVG: ${response.status}`);
+            }
+
+            const svgText = await response.text();
+            const encoded = encodeURIComponent(svgText).replace(/'/g, '%27').replace(/"/g, '%22');
+
+            return `data:image/svg+xml;charset=utf-8,${encoded}`;
+        };
+
+        const loadUrl = (url: string) => {
+            // Mark the URL as pending.
+            urlStates[url] = { state: 'pending', uri: null };
+            fetchSvgAsDataUri(url).then((uri) => {
+                urlStates[url] = { state: 'loaded', uri };
+            });
+        };
+
         const icons = Array.from(document.querySelectorAll('svg.gb-icon'));
         const results = icons.map((icon) => {
             if (!(icon instanceof SVGElement)) {
                 throw new Error('Icon is not an SVGElement');
             }
 
-            // If loaded, good it passes the test.
-            if (icon.dataset.loadingState === 'loaded') {
-                return true;
-            }
-
-            // If not loaded yet, we need to load it.
-            if (icon.dataset.loadingState === 'pending') {
-                return false;
-            }
-
             // Ignore icons that are not visible.
             if (!icon.checkVisibility()) {
                 return true;
             }
 
+            const state = icon.getAttribute('data-argos-state');
+
+            if (state === 'pending') {
+                return false;
+            }
+
+            if (state === 'loaded') {
+                return true;
+            }
+
             // url("https://ka-p.fontawesome.com/releases/v6.6.0/svgs/light/moon.svg?v=2&token=a463935e93")
             const maskImage = window.getComputedStyle(icon).getPropertyValue('mask-image');
             const urlMatch = maskImage.match(/url\("([^"]+)"\)/);
-            const url = urlMatch ? urlMatch[1] : null;
+            const url = urlMatch?.[1];
 
             // If URL is invalid we throw an error.
             if (!url) {
                 throw new Error('No mask-image');
             }
 
-            // If the URL is already loaded, we just mark it as loaded.
-            if (urls.has(url)) {
-                icon.dataset.loadingState = 'loaded';
-                return true;
+            // If the URL is already queued for loading, we return the state.
+            if (urlStates[url]) {
+                if (urlStates[url].state === 'loaded') {
+                    icon.setAttribute('data-argos-state', 'pending');
+                    icon.style.maskImage = `url("${urlStates[url].uri}")`;
+                    requestAnimationFrame(() => {
+                        icon.setAttribute('data-argos-state', 'loaded');
+                    });
+                    return false;
+                }
+
+                return false;
             }
 
-            // Mark the icon as pending and load the image.
-            icon.dataset.loadingState = 'pending';
-
-            // Mark the URL as seen.
-            urls.add(url);
-
-            const img = new Image();
-            img.src = url;
-            img.decode().then(() => {
-                // Wait two frames to let the time to the icon to repaint.
-                requestAnimationFrame(() => {
-                    requestAnimationFrame(() => {
-                        icon.dataset.loadingState = 'loaded';
-                    });
-                });
-            });
-
+            loadUrl(url);
             return false;
         });
 

packages/gitbook/package.json

@@ -1,6 +1,6 @@
 {
     "name": "gitbook",
-    "version": "0.10.0",
+    "version": "0.12.0",
     "private": true,
     "scripts": {
         "dev": "env-cmd --silent -f ../../.env.local next dev",
@@ -16,7 +16,7 @@
         "clean": "rm -rf ./.next && rm -rf ./public/~gitbook/static/icons && rm -rf ./public/~gitbook/static/math"
     },
     "dependencies": {
-        "@gitbook/api": "*",
+        "@gitbook/api": "^0.119.0",
         "@gitbook/cache-do": "workspace:*",
         "@gitbook/cache-tags": "workspace:*",
         "@gitbook/colors": "workspace:*",
@@ -27,6 +27,7 @@
         "@gitbook/react-math": "workspace:*",
         "@gitbook/react-openapi": "workspace:*",
         "@radix-ui/react-checkbox": "^1.0.4",
+        "@radix-ui/react-dropdown-menu": "^2.1.12",
         "@radix-ui/react-navigation-menu": "^1.2.3",
         "@radix-ui/react-popover": "^1.0.7",
         "@radix-ui/react-tooltip": "^1.1.8",
@@ -37,6 +38,7 @@
         "assert-never": "^1.2.1",
         "bun-types": "^1.1.20",
         "classnames": "^2.5.1",
+        "event-iterator": "^2.0.0",
         "framer-motion": "^10.16.14",
         "js-cookie": "^3.0.5",
         "jsontoxml": "^1.0.1",
@@ -44,16 +46,24 @@
         "katex": "^0.16.9",
         "mathjax": "^3.2.2",
         "mdast-util-to-markdown": "^2.1.2",
+        "mdast-util-from-markdown": "^2.0.2",
+        "mdast-util-frontmatter": "^2.0.1",
+        "mdast-util-gfm": "^3.1.0",
+        "micromark-extension-gfm": "^3.0.0",
+        "micromark-extension-frontmatter": "^2.0.0",
+        "unist-util-remove": "^4.0.0",
+        "unist-util-visit": "^5.0.0",
         "memoizee": "^0.4.17",
         "next": "14.2.26",
         "next-themes": "^0.2.1",
         "nuqs": "^2.2.3",
         "object-hash": "^3.0.0",
         "openapi-types": "^12.1.3",
-        "p-map": "^7.0.0",
+        "p-map": "^7.0.3",
         "parse-cache-control": "^1.0.1",
-        "react": "18.3.1",
-        "react-dom": "18.3.1",
+        "partial-json": "^0.1.7",
+        "react": "^19.0.0",
+        "react-dom": "^19.0.0",
         "react-hotkeys-hook": "^4.4.1",
         "rehype-sanitize": "^6.0.0",
         "rehype-stringify": "^10.0.1",
@@ -70,13 +80,11 @@
         "usehooks-ts": "^3.1.0",
         "zod": "^3.24.2",
         "zod-to-json-schema": "^3.24.5",
-        "event-iterator": "^2.0.0",
-        "partial-json": "^0.1.7",
         "zustand": "^5.0.3"
     },
     "devDependencies": {
-        "@argos-ci/playwright": "^4.3.0",
-        "@cloudflare/next-on-pages": "1.13.7",
+        "@argos-ci/playwright": "^5.0.3",
+        "@cloudflare/next-on-pages": "1.13.12",
         "@cloudflare/workers-types": "^4.20241230.0",
         "@playwright/test": "^1.51.1",
         "@types/js-cookie": "^3.0.6",

packages/gitbook/public/_headers

@@ -1,3 +1,7 @@
 # GitBook immutable static assets
+# Duplicated from next.config.mjs until OpenNext supports generating static headers
 /~gitbook/static/*
   cache-control: public,max-age=31536000,immutable
+  Access-Control-Allow-Origin: *
+/_next/static/*
+  Access-Control-Allow-Origin: *

packages/gitbook/src/components/Announcement/AnnouncementBanner.tsx

@@ -1,5 +1,6 @@
 'use client';
 
+import { tString, useLanguage } from '@/intl/client';
 import * as storage from '@/lib/local-storage';
 import type { ResolvedContentRef } from '@/lib/references';
 import { tcls } from '@/lib/tailwind';
@@ -18,6 +19,8 @@ export function AnnouncementBanner(props: {
 }) {
     const { announcement, contentRef } = props;
 
+    const language = useLanguage();
+
     const hasLink = announcement.link && contentRef?.href;
     const closeable = announcement.style !== 'danger';
 
@@ -25,13 +28,13 @@ export function AnnouncementBanner(props: {
     const style = BANNER_STYLES[announcement.style];
 
     return (
-        <div className="announcement-banner theme-bold:bg-header-background pt-4 pb-2">
+        <div id="announcement-banner" className="theme-bold:bg-header-background pt-4 pb-2">
             <div className="scroll-nojump">
                 <div className={tcls('relative', CONTAINER_STYLE)}>
                     <Tag
                         href={contentRef?.href ?? ''}
                         className={tcls(
-                            'flex w-full items-start justify-center overflow-hidden rounded-md straight-corners:rounded-none px-4 py-3 text-neutral-strong text-sm theme-bold:ring-1 theme-gradient:ring-1 ring-inset transition-colors',
+                            'flex w-full items-start justify-center overflow-hidden circular-corners:rounded-xl rounded-md straight-corners:rounded-none px-4 py-3 text-neutral-strong text-sm theme-bold:ring-1 theme-gradient:ring-1 ring-inset transition-colors',
                             style.container,
                             closeable && 'pr-12',
                             hasLink && style.hover
@@ -78,9 +81,10 @@ export function AnnouncementBanner(props: {
                     </Tag>
                     {closeable ? (
                         <button
-                            className={`absolute top-0 right-4 mt-2 mr-2 rounded straight-corners:rounded-none p-1.5 transition-all hover:ring-1 sm:right-6 md:right-8 ${style.close}`}
+                            className={`absolute top-0 right-4 mt-2 mr-2 rounded circular-corners:rounded-lg straight-corners:rounded-none p-1.5 transition-all hover:ring-1 sm:right-6 md:right-8 ${style.close}`}
                             type="button"
                             onClick={dismissAnnouncement}
+                            title={tString(language, 'close')}
                         >
                             <Icon icon="close" className="size-4" />
                         </button>

packages/gitbook/src/components/Ask/AskDialog.tsx

@@ -0,0 +1,66 @@
+'use client';
+
+import { tcls } from '@/lib/tailwind';
+import { Button } from '../primitives';
+import { AskInput } from './AskInput';
+import { AskMessages } from './AskMessages';
+import { useAskController, useAskState } from './state';
+
+export function AskDialog() {
+    const state = useAskState();
+    const controller = useAskController();
+
+    if (!state.opened) {
+        return null;
+    }
+
+    return (
+        <div
+            role="dialog"
+            className={`ask-dialog ${tcls(
+                'z-40',
+                'fixed',
+                'top-3',
+                'right-3',
+                'bottom-3',
+                'w-[480px]',
+                'flex',
+                'flex-col',
+                'bg-tint-base',
+                'rounded-lg',
+                'straight-corners:rounded-sm',
+                'circular-corners:rounded-2xl',
+                'ring-1',
+                'ring-tint',
+                'shadow-2xl',
+                'depth-flat:shadow-none',
+                'overflow-hidden',
+                'dark:ring-inset',
+                'dark:ring-tint'
+            )})`}
+        >
+            <div className="flex flex-row">
+                <div className="flex-1"></div>
+                <div className="p-2">
+                    <Button
+                        variant="blank"
+                        icon="close"
+                        iconOnly
+                        onClick={() => {
+                            controller.close();
+                        }}
+                    />
+                </div>
+            </div>
+            <div className="flex-1">
+                <AskMessages session={state.session} />
+            </div>
+            <div className="flex flex-row">
+                <AskInput />
+            </div>
+            {/* <div>
+            <h1>{state.session.title}</h1>
+        </div> */}
+        </div>
+    );
+}

packages/gitbook/src/components/Ask/AskInput.tsx

@@ -0,0 +1,28 @@
+import { tcls } from '@/lib/tailwind';
+import React from 'react';
+import { useAskController } from './state';
+
+export function AskInput() {
+    const controller = useAskController();
+    const [value, setValue] = React.useState('');
+
+    return (
+        <textarea
+            className={tcls('resize-none', 'bg-tint-base', 'rounded-lg', 'm-2', 'p-2', 'flex-1')}
+            value={value}
+            placeholder="Ask a question..."
+            onChange={(event) => {
+                setValue(event.currentTarget.value);
+            }}
+            onKeyDown={(event) => {
+                if (event.key === 'Enter' && !event.shiftKey) {
+                    event.preventDefault();
+                    controller.postMessage({
+                        message: value,
+                    });
+                    setValue('');
+                }
+            }}
+        />
+    );
+}

packages/gitbook/src/components/Ask/AskMessages.tsx

@@ -0,0 +1,15 @@
+import type { AskSession } from './state';
+
+export function AskMessages(props: {
+    session: AskSession;
+}) {
+    const { session } = props;
+
+    return (
+        <div className="flex flex-col gap-2">
+            {session.messages.map((message, index) => {
+                return <div key={index}>{message.content}</div>;
+            })}
+        </div>
+    );
+}

packages/gitbook/src/components/Ask/index.ts

@@ -0,0 +1,2 @@
+export * from './AskDialog';
+export * from './state';

packages/gitbook/src/components/Ask/server-actions/AIMessageView.tsx

@@ -0,0 +1,31 @@
+import type { AIMessage } from '@gitbook/api';
+import { DocumentView } from '../../DocumentView';
+
+/**
+ * Render a message from the API backend.
+ */
+export function AIMessageView(props: {
+    message: AIMessage;
+}) {
+    const { message } = props;
+
+    return (
+        <div className="flex flex-col gap-2">
+            {message.steps.map((step, index) => {
+                return (
+                    <div key={index} className="flex flex-col gap-2">
+                        <DocumentView
+                            document={step.content}
+                            context={{
+                                mode: 'default',
+                                contentContext: undefined,
+                                wrapBlocksInSuspense: false,
+                            }}
+                            style={['space-y-5']}
+                        />
+                    </div>
+                );
+            })}
+        </div>
+    );
+}