Bump @mdn/browser-compat-data from 7.3.17 to 8.0.0

[dependabot]

Bumps @mdn/browser-compat-data from 7.3.17 to 8.0.0.

Release notes

Sourced from @​mdn/browser-compat-data's releases.

v8.0.0

Breaking changes

This release introduces two breaking changes in the TypeScript definitions. The shape of the published data.json has not changed.

Summary: The published TypeScript definitions (types.d.ts) now fully match the actual shape of the published data.json. Two existing types are now stricter.

1. source_file is now required on CompatStatement (#29041)

Previously, the CompatStatement.source_file property was optional in the TypeScript definitions, even though it is always present in published data.json releases (it is generated at build time).

Now, source_file is typed as required, matching the actual shape of the data.

Impact: You may need to remove checks for a missing source_file (e.g. if (compat.source_file)).

2. BrowserStatement.upstream is narrowed to UpstreamBrowserName (#29041)

Previously, the BrowserStatement.upstream property was typed as BrowserName, allowing any of the 17 known browser keys.

Now, upstream is typed as the new UpstreamBrowserName, a subset of BrowserName containing only the browsers that other browsers actually derive from: "chrome" | "chrome_android" | "firefox" | "safari" | "safari_ios".

Impact: You may need to widen the type when passing upstream into functions expecting a full BrowserName, or switch on the narrower set.

Statistics

• 2 contributors have changed 91 files with 1,681 additions and 784 deletions in 1 commit (v7.3.17...v8.0.0)
• 19,752 total features
• 1,250 total contributors
• 5,671 total stargazers

Changelog

Sourced from @​mdn/browser-compat-data's changelog.

v8.0.0

May 22, 2026

Breaking changes

This release introduces two breaking changes in the TypeScript definitions. The shape of the published data.json has not changed.

Summary: The published TypeScript definitions (types.d.ts) now fully match the actual shape of the published data.json. Two existing types are now stricter.

1. source_file is now required on CompatStatement (#29041)

Previously, the CompatStatement.source_file property was optional in the TypeScript definitions, even though it is always present in published data.json releases (it is generated at build time).

Now, source_file is typed as required, matching the actual shape of the data.

Impact: You may need to remove checks for a missing source_file (e.g. if (compat.source_file)).

2. BrowserStatement.upstream is narrowed to UpstreamBrowserName (#29041)

Previously, the BrowserStatement.upstream property was typed as BrowserName, allowing any of the 17 known browser keys.

Now, upstream is typed as the new UpstreamBrowserName, a subset of BrowserName containing only the browsers that other browsers actually derive from: "chrome" | "chrome_android" | "firefox" | "safari" | "safari_ios".

Impact: You may need to widen the type when passing upstream into functions expecting a full BrowserName, or switch on the narrower set.

Statistics

• 2 contributors have changed 91 files with 1,681 additions and 784 deletions in 1 commit (v7.3.17...v8.0.0)
• 19,752 total features
• 1,250 total contributors
• 5,671 total stargazers

Older Versions

• v7.x
• v6.x
• v5.x
• v4.x
• v3.x
• v2.x
• v1.x
• v0.x

Commits

• d256a4f Release v8.0.0 (#29732)
• abb8617 feat(schemas)!: separate public from internal schema (#29041)
• See full diff in compare view

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[github-actions]

Complete this checklist for every @mdn/browser-compat-data upgrade PR.

• Check out this branch locally.
• If any keys were removed in the release, delete them from .yml files and commit your changes.
• Run npm install && npm run dist && npm test && git commit --all --message="Refresh dist" && git push.
• Review the diff. Watch out for Baseline regressions; if applicable, add a comment (see #1971).
• Merge this PR.

After merging, do these steps:

• Trigger a drafts update workflow run.
• Start a PR to publish the next web-features release.