Feature changes

Custom query handler API

The custom query handler support is no longer marked as experimental. The API has been updated to:

puppeteer.registerCustomQueryHandler(name: string, queryHandler: CustomQueryHandler): void;
puppeteer.unregisterCustomQueryHandler(name: string): void;
puppeteer.customQueryHandlerNames(): string[];
puppeteer.clearCustomQueryHandlers(): void;

New built-in query handlers

Puppeteer now ships with two built-in handlers: aria and pierce:

• The aria handler (#6307) allows querying elements based on the accessibility tree.
• The pierce handler (#6509) pierces shadow roots while querying for a CSS selector.

Roll Chromium 87.0.4272.0 (r809590)

Behind the scenes

• We now enforce Conventional Commits through commitlint (#6483)
• We've started work towards automating the release process. This work can be tracked in #6482.

Raw notes

5e5fed1 - fix: ignore spurious bindingCalled events (#6538)
e6b8c77 - chore: fix travis config (#6537)
c756fb4 - fix(utils): typo fix (#6522)
f63a123 - chore(agnostification): agnostify web socket connections (#6520)
c2c2bb7 - chore(agnostification): common/helper.ts (#6515)
637a1f7 - chore: gitignore new-docs (#6511)
e655bb6 - chore(agnostification): split up root Puppeteer class (#6504)
f3086d7 - fix(launcher): support relative userDataDir on headless Windows (#6506)
8fabe32 - feat(queryhandler): add built-in pierce handler (#6509)
f04bec5 - chore: update eslint & eslint plugins (#6487)
4846b87 - chore(agnostification): split up launcher class (#6484)
1ed38af - chore(node): move install.ts into node/ (#6490)
e94a1e8 - chore: bump misc dependencies (#6488)
936ccdc - chore: enforce Conventional Commits through commitlint (#6483)
502ed8c - chore(agnostify): Create Node and Web initializer. (#6477)
3afe193 - feat(a11y-query): extend aria handler with waitFor (#6472)
cc7f1fd - docs(queryhandler): add custom query handler docs (#6476)
70ed875 - fix(queryhandler) only expose custom handlers (#6475)
950ae33 - feat(a11y-query): aria query handler sans waitfor (#6459)
41ef3ee - fix: update preferences in default Firefox profile (#6465)
9275653 - docs(examples): update selector for search example (#6471)
49f25e2 - feat(chromium) roll Chromium to r809590 (#6458)
4cdbebe - chore: disable firefox windows launcher test until Nov (#6451)
75e3fb0 - docs(api): fix some outdated links (#6450)
caa9a1c - chore(agnostic): Remove use of util.promisify (#6446)
96f3d43 - feat(console): expose stack trace for console messages (#6445)
322cc96 - chore: remove npm run test-types call (#6447)
72fe86f - feat(a11y-query): introduce internal handlers (#6437)
1396c9d - chore: bump version to v5.3.1-post (#6440)
11ab402 - fix: add mime dependency back to fix build (#6441)