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feat: report pages opened by input actions - #2679
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PTAL. Thanks! |
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OrKoN
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Thanks for the PR, let's make following changes after rebasing:
- In
src/utils/WaitForHelper.ts(WaitForHelper.waitForEventsAfterAction) andsrc/McpResponse.ts(McpResponse.format,formatPage), track opened popups bypage.target()(mcpPage.target) instead ofmcpPage.pptrPage, and useawait mcpPage.getTitle()andmcpPage.url()insideformatPage. After PR #2812, unselectedMcpPageinstances incontext.getPages()(including newly opened popups) are lazily initialized fromTargetand throwMcpPage is not initializedwhenmcpPage.pptrPageis accessed, andfetchPageTitlehas been replaced bymcpPage.getTitle(). - In
tests/utils/WaitForHelper.test.tsandtests/tools/input.test.ts, replace thewithMcpContextreal-browser popup tests with mock-based unit tests usingcreateMockPuppeteerPage()(emitting'popup') and mock-basedMcpResponsetests intests/McpResponse.test.ts.AGENTS.mdrequires preferring mock-based unit tests over launching a real browser viawithMcpContextwhen testing event listener wiring and response formatting.
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marking as needing changes
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let's check the following:
-
In
src/McpResponse.ts(formatPage), useawait mcpPage.getTitle()andmcpPage.url()instead of callingfetchPageTitle(mcpPage.pptrPage)andmcpPage.pptrPage.url(). Unselected pages (such as other open pages formatted under## Pagesor## Extension Pages) do not have an initializedpptrPage, causingformatPageto throwMcpPage is not initialized. I am actually working on removing the fetches for titles, let's wait for that. -
In
src/utils/WaitForHelper.tsandsrc/McpResponse.ts, recordpopup.target()in aSet<Target>rather than storingpage: objectin aWeakSet<object>. This avoids the looseobjecttyping and#hasOpenedPagesflag, and allows synchronous matching viaopenedTargets.has(mcpPage.target)without awaitingmcpPage.target.page()or eagerly callingawait mcpPage.init(). -
In
tests/utils/WaitForHelper.test.ts, update the popup test to emit'popup'fromcreateMockPuppeteerPage()rather than launching a full browser viawithMcpContext. Unit tests inWaitForHelper.test.tsshould verify event wiring and listener cleanup using mocks rather than real browser integration tests.
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Addressed the latest review feedback and pushed
PTAL, Thanks. |
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@lisa0314 there seem to be another merge conflict, could you please rebase? |
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marking as needing changes
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@OrKoN Sorry for the late reply. The rebase work has been completed. Please take another look. Thanks! |
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@lisa0314 It looks like there is till a rebase issue after more changes landed, could you take care of the new ones as well? |
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@Lightning00Blade Rebased onto the latest main and resolved the new conflict. I also added explicit return types to comply with the new ESLint rules. Please take another look. Thanks! |
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PTAL:
-
In
src/utils/WaitForHelper.ts, import the internalPagetype throughsrc/third_party/index.ts(e.g. addexport type {Page as InternalPage} from 'puppeteer-core/internal/api/Page.js'there) instead of importingpuppeteer-core/internal/api/Page.jsdirectly. All other Puppeteer internals go throughsrc/third_party/index.ts, which is the bundling boundary for third-party code. -
In
tests/utils/WaitForHelper.test.ts(captures popup targets opened by the action), also check that the'popup'listener is removed afterwaitForEventsAfterActionresolves (e.g.pptrPage.listenerCount('popup') === 0). The previous review asked for coverage of both event wiring and listener cleanup, and a leaked listener would add targets from later actions to a stale helper. -
In
tests/McpResponse.test.ts(reports only pages opened by the attached action), addsinon.assert.calledOnceWithExactly(context.createPagesSnapshot). The newopenedPages && !includePagessnapshot refresh inMcpResponse.formatis currently untested, and without it newly opened popups have noMcpPageentry and are silently left out. -
Revert the unrelated blank-line change in
tests/tools/input.test.ts. It is the only change left in that file after the real-browser popup test was removed, so it is just diff noise.
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Thanks for the review! All four points are addressed:
PTAL. Thanks! |
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Thanks! The last item: I think the InternalPage usage can be dropped:
- In
src/utils/WaitForHelper.ts(waitForEventsAfterAction), register the'popup'listener on the publicPagepassed to the constructor so the handler gets a publicPage | nullandpage.target()can go into#openedPagesdirectly, then remove the runtimeinstanceof Targetcheck and theInternalPageexport fromsrc/third_party/index.ts. Right now theinstanceofcheck exists only to convert the internalTargettype to the public one, which goes against theAGENTS.mdrule against redundant type checks, and if it ever fails the popup is silently dropped.
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@lisa0314 could you please rebase as well? |
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@OrKoN Rebased onto the latest main, resolved the McpResponse conflict while preserving fresh page titles and popup reporting. |
Head branch was pushed to by a user without write access
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Rebased onto the latest main and resolved the helper-function insertion conflict introduced by the Lighthouse update. Auto-merge was automatically disabled. Please help to approve to merge again. Thanks! @OrKoN |
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🤖 I have created a release *beep* *boop* --- ## [1.11.0](chrome-devtools-mcp-v1.10.1...chrome-devtools-mcp-v1.11.0) (2026-10-15) ### 🎉 Features * add --file-navigations flag to reject file: URL navigations ([#2853](#2853)) ([54cae57](54cae57)) * Add analyze_heapsnapshot_contexts MCP tool ([#2791](#2791)) ([190aeee](190aeee)) * add ignoreCache option to performance_start_trace ([#2931](#2931)) ([3467d40](3467d40)) * add maxNameLength truncation option to compare_heapsnapshots ([#3098](#3098)) ([1e1c53e](1e1c53e)) * Add pagination to compare_heapsnapshots ([#3140](#3140)) ([daebfd1](daebfd1)) * **config:** add ConfigWatcher to watch config file changes ([#3139](#3139)) ([9171f77](9171f77)) * discover the config file in predefined locations ([#2876](#2876)) ([02c0112](02c0112)) * implement ffmpeg-free screencast tools enabled by default ([#3123](#3123)) ([8953ea5](8953ea5)) * reduce StaticText noise in text snapshots ([#2895](#2895)) ([4441325](4441325)) * report pages opened by input actions ([#2679](#2679)) ([28fb230](28fb230)) * resolve config defaults after merging CLI and config file ([#2849](#2849)) ([bdeb70d](bdeb70d)) * return failing audits and DOM nodes inline from lighthouse_audit ([#2930](#2930)) ([241fba5](241fba5)) * skip more redundant data in text snapshots ([#2896](#2896)) ([b2f522c](b2f522c)) * support debugging WebMCP tools in third-party developer tools ([#2900](#2900)) ([0db519f](0db519f)) * support emulating additional CSS media features ([#2929](#2929)) ([69524f0](69524f0)) * support evaluating scripts from local files ([#2606](#2606)) ([9cf47a4](9cf47a4)) * Support truncation in get_heapsnapshot_details ([#3137](#3137)) ([f827e06](f827e06)) * Truncate long names by default to 100 characters ([#2893](#2893)) ([5ddb0a3](5ddb0a3)) ### 🛠️ Fixes * account for scroll offsets in downscaled screenshots ([#2685](#2685)) ([830c693](830c693)) * allow --categoryExtensions when connecting to an existing browser ([#3041](#3041)) ([d250bc5](d250bc5)) * allow stopping the CLI if command fails ([#3088](#3088)) ([77e238e](77e238e)), closes [#2982](#2982) * avoid runtime title fetches ([#2883](#2883)) ([04195d1](04195d1)) * better config support for chrome-devtools CLI ([#2819](#2819)) ([9624e64](9624e64)) * clamp async stack trace separator repeat count ([#3035](#3035)) ([93e06ab](93e06ab)), closes [#3031](#3031) * **cli:** pass positional values starting with `-` through to tools ([#3084](#3084)) ([9de05ae](9de05ae)), closes [#2984](#2984) * **collectors:** ignore transient target errors when subscribing to service workers ([#2888](#2888)) ([551dd6c](551dd6c)) * **daemon:** bound browser shutdown and avoid watchFile timeout on stop ([#2887](#2887)) ([f3db5e7](f3db5e7)) * **daemon:** keep fallback socket in private runtime dir ([#2766](#2766)) ([871a37e](871a37e)) * **daemon:** verify process identity before treating PID file as active ([#3109](#3109)) ([b608bed](b608bed)) * do not close a healthy browser when a tool call outlasts 60s ([#3149](#3149)) ([39c7db1](39c7db1)) * ensure aggregate IDs in heap snapshots are deterministic ([#2923](#2923)) ([e918c47](e918c47)) * escape client-supplied values in McpContext logs and errors ([#2832](#2832)) ([efb0d02](efb0d02)), closes [#2831](#2831) * fail fast on tool calls stuck after a dead browser connection ([#2699](#2699)) ([2a7ef50](2a7ef50)) * harden third-party tool result serialization ([#2892](#2892)) ([4418a7b](4418a7b)) * honor explicit --allowUnrestrictedPaths=false in CLI mode ([#3040](#3040)) ([61fc362](61fc362)) * include errors in slim responses ([#3085](#3085)) ([ee38097](ee38097)) * **input:** reject multiple file paths on single-file input in upload_file ([#2995](#2995)) ([#3135](#3135)) ([e650843](e650843)) * list fresh page titles ([#3103](#3103)) ([e717082](e717082)) * **memory:** reject contradictory pagination options in take_heapsnapshot ([#3002](#3002)) ([#3131](#3131)) ([508126c](508126c)) * **network:** enforce URL policy across redirects ([#2767](#2767)) ([274cd4c](274cd4c)) * pass categoryExtensions to the target filter when connecting ([#3047](#3047)) ([4e90238](4e90238)) * **performance:** report an error when performance_stop_trace is called with no active trace ([#3001](#3001)) ([#3126](#3126)) ([e170384](e170384)) * preserve HeapSnapshotManager across browser reconnects ([#3025](#3025)) ([64388c6](64388c6)) * propagate failed responseFilePath write error instead of reporting body unavailable ([#2957](#2957)) ([#3119](#3119)) ([3cee3bd](3cee3bd)) * **pwa:** wait for initial navigation on launch and retry transient install error ([#2889](#2889)) ([63010cb](63010cb)) * record screencast at the page's device pixel size ([#3155](#3155)) ([62e2aa4](62e2aa4)) * reject --blockedUrlPattern/--allowedUrlPattern hostname regexp groups ([#2796](#2796)) ([ae0aaef](ae0aaef)) * reject JSON arrays as 3p and WebMCP tool params ([#2785](#2785)) ([c14e616](c14e616)) * reject named groups in URL patterns ([#2857](#2857)) ([5b2c6f9](5b2c6f9)) * reject non-positive --viewport dimensions ([#2781](#2781)) ([0ef528a](0ef528a)) * reject non-positive resize_page dimensions ([#2784](#2784)) ([6ab6d35](6ab6d35)) * reject unrestricted paths with an explicit workspace ([#2858](#2858)) ([45c1c6c](45c1c6c)) * report unknown page id before last-page guard in close_page ([#3042](#3042)) ([bdc7e24](bdc7e24)) * round lighthouse category scores and show unscored categories as n/a ([#2924](#2924)) ([7007680](7007680)), closes [#2915](#2915) [#2916](#2916) * set empty filePath to undefined instead of empty string ([#2836](#2836)) ([adfc1ff](adfc1ff)), closes [#2825](#2825) * surface WebMCP tool exceptions in execute_webmcp_tool ([#3107](#3107)) ([d80d22e](d80d22e)), closes [#2975](#2975) * url pattern partial ipv4 ([#2859](#2859)) ([c87d190](c87d190)) ### 📄 Documentation * clarify Antigravity MCP setup for VS Code extension ([#2855](#2855)) ([12e13ca](12e13ca)) * clarify scope of --no-javascript-evaluation ([#3100](#3100)) ([0c67cd5](0c67cd5)) * correct link to configuration ([#3086](#3086)) ([bbb1e36](bbb1e36)) * document trusted host environment in SECURITY.md ([#3125](#3125)) ([1352207](1352207)) * fix inaccurate examples in skills and CLI docs ([#2922](#2922)) ([ec372b0](ec372b0)), closes [#2906](#2906) [#2907](#2907) [#2908](#2908) [#2910](#2910) [#2912](#2912) [#2913](#2913) [#2918](#2918) [#2919](#2919) [#2920](#2920) [#2921](#2921) * fix some reported issues ([#3099](#3099)) ([d5d2f08](d5d2f08)) * include serviceWorkerId parameter for evaluate_script ([#3015](#3015)) ([#3129](#3129)) ([0623434](0623434)) * mention heapsnapshot being cached between runs ([#3045](#3045)) ([f08dbe1](f08dbe1)), closes [#2976](#2976) * **skills:** remove invalid outputDir flag from lighthouse_audit calls ([#3013](#3013)) ([#3130](#3130)) ([7754226](7754226)) * update documentation and SKILL for get_css_styles tool ([#2824](#2824)) ([3c12a91](3c12a91)) ### ⚡ Performance * **cli:** re-use MCPServer.from helpers for daemon ([#2804](#2804)) ([89eb3d5](89eb3d5)) * Load heap snapshots in parallel in compare_heapsnapshots ([#3023](#3023)) ([20c1391](20c1391)) ### 🏗️ Refactor * centralize config defaults and conflict checks ([#2753](#2753)) ([a739ba8](a739ba8)) * create all tools and register per slim mode ([#2874](#2874)) ([99847a7](99847a7)) * enable categories by default ([#2811](#2811)) ([e33ee48](e33ee48)) * extract CLI examples and conflict list in mcp-options ([#2848](#2848)) ([45000d9](45000d9)) * extract config parsing logic in a class ([#2861](#2861)) ([e4168d0](e4168d0)) * extract worker logic into McpWorker ([#2800](#2800)) ([77165c6](77165c6)) * group Puppeteer and tool options ([#2875](#2875)) ([699c4d5](699c4d5)) * lazily initialize McpPage from Target and enumerate targets in McpContext ([#2812](#2812)) ([545cbe3](545cbe3)) * use default Error for toolSchema ([#2822](#2822)) ([8b2768d](8b2768d)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). Co-authored-by: Alex Rudenko <OrKoN@users.noreply.github.com>
## Summary Add a **Pre-submit checklist** section to `AGENTS.md`. Each item comes from a recent review finding or a landed bug fix in this repository. The checklist has five groups: - **Scope and PR description**: one change per PR, title and commit type match, description lists every behavior change and matches the diff, `npm run gen` and `npm run format` ran. - **Design**: fix in the lowest layer that owns the data, fix upstream (Puppeteer, devtools-frontend) first, one helper for repeated code, options objects instead of positional `undefined` arguments, validation in Zod schemas. - **Correctness and edge cases**: no stale state after a failed call, artifacts written before a throw, abandoned async continuations, mutex guards, file removal races, `dispose()` releases every resource, secrets never reach logs, path parameters validated even when they parse as URLs. - **Tests**: every new function has a test, no vacuous assertions, `notCalled` targets the first call after validation, exact-argument assertions, reusable stubs in `tests/mocks.ts`, bounded timeouts, no second CDP session for event waits. - **Documentation and output**: tool descriptions state when a parameter is ignored, skills stay generic, one-sentence inline comments. Sources: review comments on ChromeDevTools#2679, ChromeDevTools#2797, ChromeDevTools#2859, ChromeDevTools#2881, ChromeDevTools#2901, ChromeDevTools#3048, ChromeDevTools#3082, ChromeDevTools#3109, ChromeDevTools#3120, ChromeDevTools#3132, ChromeDevTools#3134, ChromeDevTools#3139, ChromeDevTools#3148, ChromeDevTools#3156, ChromeDevTools#3158, ChromeDevTools#3161, ChromeDevTools#3182, ChromeDevTools#3183, ChromeDevTools#3186, ChromeDevTools#3187, ChromeDevTools#3188, ChromeDevTools#3189, ChromeDevTools#3192, ChromeDevTools#3196, ChromeDevTools#3197, ChromeDevTools#3198, ChromeDevTools#3203, ChromeDevTools#3204, and fixes ChromeDevTools#3150, ChromeDevTools#3160, ChromeDevTools#3185, ChromeDevTools#3202, ChromeDevTools#3207, ChromeDevTools#3208. Existing content in `AGENTS.md` is unchanged. Closes ChromeDevTools#3222
Fixes #367
Report pages opened by input actions using the source page popup events. The response lists only opened pages under
## Opened pageswith their MCP page ID, title, and URL, and exposes them asstructuredContent.openedPages. Already-open pages are excluded; a full page list is not implicitly enabled.The popup set uses a WeakSet. Before formatting a response, the page snapshot is refreshed so opened pages have MCP IDs. The response follows the context page order rather than promising event order. Shared page formatting also covers the regular and extension page lists.
Tests cover a popup alongside an unrelated page, multiple popups without depending on order, and listener cleanup.
Testing
npm run formatandnpm run buildpassed.npm run test tests/utils/WaitForHelper.test.tsandnpm run test tests/tools/input.test.tspassed with system Chrome.npm run testrun encountersPage.captureScreenshot: Page is too largein the large full-page screenshot test; the same failure reproduces on an unchangedmaincheckout with the same Chrome.