metro

• [Feature]: Support custom transformer/resolver options in metro build and runBuild API. (https://github.com/facebook/metro/commit/fcfecc96728848af0f2b49a8a1f7501ff9c1054e by @motiz88)
• [Feature]: metro get-dependencies --entryFile <entryFile> can now be called as metro get-dependencies <entryFile>. (https://github.com/facebook/metro/commit/6fdce04007af5dfbbb9c1dd23fbc37ffdeb59ccb by @huntie)
• [Feature]: Add Content-Type and Content-Length headers for assets to Metro server. (https://github.com/facebook/metro/pull/953 by @aleqsio, https://github.com/facebook/metro/pull/961 by @byCedric)
• [Feature]: Expose mergeConfig util from metro package. (https://github.com/facebook/metro/commit/aa8ec904ced59e8bbb22ef4fd71932d5d099baa7 by @huntie)
• [Fix]: metro-file-map: consistently abort crawl when end() is called. (https://github.com/facebook/metro/commit/51877a8c50b25ce175b097448ef063368aac2009 by @motiz88)
• [Fix]: metro-config: Don't mutate argument to loadConfig. (https://github.com/facebook/metro/commit/38ec62d1a051a5738f17444ba789ad48000ee31d by @motiz88)
• [Fix]: Babel transformers: Provide correct absolute source path to plugins when Metro is not run from the project root. (https://github.com/facebook/metro/commit/de19bbd33f239de1b29aac5db290ffffe26ec468 by @robhogan)
• [Fix]: resolver.assetExts will now match asset files for extension values that include a dot (.). (https://github.com/facebook/metro/commit/6d65a328e6f5d7c7a5c27cad144b169f6eaad379 by @huntie)
• [Fix]: Don't register an unhandledRejection listener, fix spammy EventEmitter leak warning. (https://github.com/facebook/metro/commit/833f2ffc3624d53bea18d46797a24a034e9b264a by @motiz88)
• [Types]: Add bundled TypeScript definitions (partial) for all packages previously on DefinitelyTyped. (https://github.com/facebook/metro/commit/c022c361d09870ec5cec92a58feab77c571a4aaf, https://github.com/facebook/metro/commit/07732e778b0587ce7e92571e66243c7546781f7c, https://github.com/facebook/metro/commit/9ee5280bd4e5ce2c45bd3912860c4e70056dd45a by @huntie, with @afoxman and @tido64)
• [Types]: Expose MetroConfig type in metro package. (https://github.com/facebook/metro/commit/d2f36647e36702ddc1eddef4b0bfcbd5026d4199 by @huntie)

NOTE: Experimental features are not covered by semver and can change at any time.

• [Experimental]: Reorder asyncRequire's parameters and make module name optional. (https://github.com/facebook/metro/commit/4e5261cca6fd84b7ce75f58b038b397b84a4b038 by @motiz88)
• [Experimental]: Remove experimental metro-hermes-compiler package. (https://github.com/facebook/metro/commit/833f2ffc3624d53bea18d46797a24a034e9b264a by @motiz88)
• [Experimental]: Package Exports unstable_conditionNames now defaults to ['require']. (https://github.com/facebook/metro/pull/955 by @huntie)
• [Experimental]: Add compatibility with legacy Node.js "exports" array formats. (https://github.com/facebook/metro/commit/f321cffa73dac3cd407a0865462e62e25aa531f4, https://github.com/facebook/metro/commit/1e47cb5b3cc289530fb18e402891f9d2816611dd by @huntie)

Full Changelog: https://github.com/facebook/metro/compare/v0.76.0...v0.76.1

This is a hotfix on the 0.73.x branch.

• [Fix] Fix watching contents of new directories in NodeWatcher (https://github.com/facebook/react-native/issues/36387) (https://github.com/facebook/metro/commit/ab86982fad83da457d949f01a301c589fabcb12e by @robhogan)

Full Changelog: https://github.com/facebook/metro/compare/v0.73.8...v0.73.9

• [Breaking]: Increase minimum Node version from 14 to 16. (https://github.com/facebook/metro/commit/e5950aeaf0ddb1bf9776ec98509d56f42db2e95d by @huntie)
• [Breaking]: Remove isAssetFile from custom resolver context, add assetExts. (https://github.com/facebook/metro/commit/c6548f7ccc5b8ad59ea98f4bd7f1f5822deec0cd by @huntie)
• [Feature]: Support require.resolveWeak(). (https://github.com/facebook/metro/commit/354d6e487a068232b740c809e59c737dc7456565 by @motiz88)
• [Fix]: Don't over-invalidate on symlink changes if resolution through symlinks is not enabled. (https://github.com/facebook/metro/commit/2303c10b6b71b5bc1194badd997b08f962e8d237 by @robhogan)
• [Fix]: Returning false from context.redirectModulePath will resolve to empty module in all cases. (https://github.com/facebook/metro/commit/0f1846a64d7ec27ad7c42b1aee2a049e0fad9a5a by @huntie)
• [Fix]: Respect extensionless entries in browser, react-native etc when resolving subpath package specifiers. (https://github.com/facebook/metro/commit/7e922270de2f710112346e651c0d95a1903086aa by @huntie)
• [Fix]: Remove undocumented Meta-only __jsResource and __conditionallySplitJsResource functions from module API. (https://github.com/facebook/metro/commit/f1d905bb60227b3390515928fb87c9d524ca5481 and https://github.com/facebook/metro/commit/69c8fc707bda418b4eb7aa646ad2887d83e1d3f1 by @motiz88)

NOTE: Experimental features are not covered by semver and can change at any time.

• [Experimental]: Fixes and improvements for symlink support. (https://github.com/facebook/metro/commit/0e2a70a439c41de8c5f61b426d326b5b32d8129a, https://github.com/facebook/metro/commit/3bef954304cb4b99ab30643c49f0727d917a5306, and https://github.com/facebook/metro/commit/eeb211fdcfdcb9e7f8a51721bd0f48bc7d0d211f by @robhogan)
• [Experimental]: Fix bug where "exports" field would be used on relative imports within a package. (https://github.com/facebook/metro/commit/cd25c2b5bb6011340d43dd57b8751a102031122a by @huntie)

• [Feature]: metro-inspector-proxy: Add a human-readable reference to each inspector entries/pages.(https://github.com/facebook/metro/pull/921 by @byCedric)
• [Feature]: metro-inspector-proxy: Report errors in the console. (https://github.com/facebook/metro/commit/da8b41b279e2618786901daa3d6f25f20e9202db by @mattbfb)
• [Fix]: Race condition where a very recently modified file might have missing metadata.(https://github.com/facebook/metro/commit/baf28ab0ee3e2fd965691e57691c5d87b01897b2 by @robhogan)
• [Fix]: Source maps may have invalid entries when using Terser minification. (https://github.com/facebook/metro/pull/928 by @robhogan)
• [Fix]: metro-inspector-proxy: Fetch source maps from Metro. (https://github.com/facebook/metro/commit/6690b393cc1812af02f8eb20853504f0a6188a83 by @mattbfb)
• [Fix]: Mitigate potential source map mismatches with concurrent transformations due to terser#1341. (https://github.com/facebook/metro/pull/929 by @robhogan)

NOTE: Experimental features are not covered by semver and can change at any time.

• [Experimental]: Add initial_build annotation to Resolving and Transforming Dependencies (https://github.com/facebook/metro/commit/fc83b521b273f7a29f9f38285d973148bd43c0e3 by @blakef)
• [Experimental]: Implement support for Package Exports (enabled via resolver.unstable_enablePackageExports) (https://github.com/facebook/metro/commit/4d7ab38ba9f85e7a8d4e2a9f2b26f48c1c070186, https://github.com/facebook/metro/commit/38b96f872a92d0f0650c9af0250c8dc5599a6e62, https://github.com/facebook/metro/commit/216d3e234c14a7c16b9561b2682e60d2e2936114, https://github.com/facebook/metro/commit/6e6f36fd982b9226b7daafd1c942c7be32f9af40 by @huntie)
• [Experimental]: Implement support for symlinks (enabled via resolver.unstable_enableSymlinks) (https://github.com/facebook/metro/pull/925, https://github.com/facebook/metro/pull/926, etc. by @robhogan)

Full Changelog: https://github.com/facebook/metro/compare/v0.75.0...v0.75.1

This is a hotfix on the 0.73.x branch.

• [Fix]: Source maps may have invalid entries when using Terser minification. (https://github.com/facebook/metro/pull/928)
• [Fix]: Mitigate potential source map mismatches with concurrent transformations due to terser#1341. (https://github.com/facebook/metro/pull/929)

Full Changelog: https://github.com/facebook/metro/compare/v0.73.7...v0.73.8

• [Breaking]: Formalise minimum Node JS requirement at 14.17.0 via package.json#engines. (https://github.com/facebook/metro/commit/c3e453ede5765a84c006b2c819a0f706218773bf)
• [Breaking]: Filter untyped context properties passed to custom resolvers. (https://github.com/facebook/metro/commit/cb01ec09c6a8df51f39d6b1419cbf173fa5abf4a)
• [Breaking]: Change default context.redirectModulePath implementation to return absolute path in all cases. (https://github.com/facebook/metro/commit/acbfe63d83a7905e21f6e034a86e5956a5062861)
• [Feature]: Add mainFields, getPackage, and getPackageForModule to custom resolver context. (https://github.com/facebook/metro/commit/adfb59329f9ff97151bd33abb7b72433e711eff9)

Full Changelog: https://github.com/facebook/metro/compare/v0.74.1...v0.75.0

• [Feature]: Add @babel/plugin-proposal-numeric-separator to metro-react-native-babel-preset (https://github.com/facebook/metro/pull/681 by @SConaway)

Full Changelog: https://github.com/facebook/metro/compare/v0.74.0...v0.74.1

• [Breaking] Remove @babel/plugin-transform-template-literals from metro-react-native-babel-preset (https://github.com/facebook/metro/commit/322dea8dc700de70aea92cf37614d5fc50e09c6b)
• [Breaking] Remove postProcessBundleSourcemap from config (https://github.com/facebook/metro/commit/339794e43463e004ae36861db17fdfbaf4a9bc67)
• [Fix] Don't log ENOENT errors to console for expected URL stack frames (https://github.com/facebook/metro/commit/1031ae6713c72b98673a82c292ecdc47cd7f75ab)
• [Fix] Don't attempt to use the find crawler on Windows (https://github.com/facebook/metro/commit/735aa9f5233e4cce78f93e94e80a3be509eea72c)
• [Performance] Improve AST processing during transformation (https://github.com/facebook/metro/pull/854 by @EvanBacon)
• [Performance] Improve Fast Refresh responsiveness when watching a large number of files (https://github.com/facebook/metro/commit/b942eca551882aec3b59f1155416ed16be1b066f)

Full Changelog: https://github.com/facebook/metro/compare/v0.73.6...v0.74.0

This is a hotfix on the 0.73.x branch.

• [Fix] Don't attempt to use the find crawler on Windows (https://github.com/facebook/metro/commit/370301981b8e5a92e072e5a2323e9be3308a2cdf)

• [Fix] Fix duplicate 'add' events, reduce dropped events on new subtrees in NodeWatcher (non-Watchman, non-macOS).(https://github.com/facebook/metro/commit/51fb7e349ca9462511ea5cd1b9c391be68839a32)

NOTE: Experimental features are not covered by semver and can change at any time.

• [Experimental] experimentalImportBundleSupport: Move bundle path hints into serialised dependency map(https://github.com/facebook/metro/pull/901)

Full Changelog: https://github.com/facebook/metro/compare/v0.73.5...v0.73.6

• [Fix]: Make all getTransformOptions result properties optional. (https://github.com/facebook/metro/commit/a07c8235a39724b8dbc7f18312db57f10302ae56)
• [Fix]: Bug that can lead to "unknown module" errors at runtime after an incremental build. (https://github.com/facebook/metro/commit/b1be263f7d5a5a606733dd15a9deeb070f951170)
• [Fix]: metro-runtime: Re-throw cached module errors without wrapping. (https://github.com/facebook/metro/commit/032c4a1e03f3f696c8526c7771621d8e312e3f61)
• [Fix] Bump babel/types dependency to ^7.20.0 for more consistent exposed AST Bump babel/types dependency to ^7.20.0 for more consistent exposed AST

Full Changelog: https://github.com/facebook/metro/compare/v0.73.4...v0.73.5

• [Feature]: Expose watch option in RunServerOptions (https://github.com/facebook/metro/pull/889 by @EvanBacon)
• [Feature]: metro-runtime: Emit additional context on WebSocket 'close' events (https://github.com/facebook/metro/commit/d54986c49cbcb217a831769766abc87f6ceb52cd)

NOTE: Experimental features are not covered by semver and can change at any time.

• [Experimental]: experimentalImportBundleSupport: Retraverse parents of deleted async dependencies (https://github.com/facebook/metro/commit/cb806d15d4c4631b74cd4d3939dd9d07494bba13)

Full Changelog: https://github.com/facebook/metro/compare/v0.73.3...v0.73.4

• [Feature]: Add configurable watcher health check that is off by default (https://github.com/facebook/metro/commit/7adf468575dbc494bd5155d239233531aa55bf32, https://github.com/facebook/metro/commit/39f6e5065d0215e10f68d715a7f7740ea97f7fed)

NOTE: Experimental features are not covered by semver and can change at any time.

• [Experimental]: Move experimentalImportBundleSupport option from transformer to server (https://github.com/facebook/metro/commit/3c0e1f7c298d226f86f30b77ec443f5aa54bf8b2)

Full Changelog: https://github.com/facebook/metro/compare/v0.73.2...v0.73.3

Maintenance release with purely internal changes.

Full Changelog: https://github.com/facebook/metro/compare/v0.73.1...v0.73.2

• [Fix]: Generate a unique name for each Watchman subscription. (3b0e78a76f4eea9f02e8b8464cf5b5e4549d6ac7)

NOTE: Experimental features are not covered by semver and can change at any time.

• [Experimental][Fix]: Normalize file paths for require.context on Windows (https://github.com/facebook/metro/pull/876 by @byCedric)

Full Changelog: https://github.com/facebook/metro/compare/v0.73.0...v0.73.1

• [Breaking] Switch default minifier from uglify-es to terser. (#871)
• [Breaking]: Increase minimum supported Node.js version to ^14.17.0. (#872)
• [Breaking]: Drop support for old (pre-CalVer) Watchman versions. (422055a5ccaca41edb1864ca07d4f810b3e03791)
• [Feature]: Support fsevents watcher on Apple Silicon. (#875)
• [Feature]: Support loading source URLs in inspector-proxy. (db19b06bdd6d2fbbe109e4f3be4b3af3489c1f1c)
• [Fix]: Log warning on unexpected error during metro-file-map cache read. (7028b7f51074f9ceef22258a8643d0f90de2388b)
• [Fix]: Remove exponentiation operator transform from metro-react-native-babel-preset. (c2365bb1d72a3773b31c05feab13a96afac484df)
• [Fix]: Don’t check watchman --version if useWatchman is false. (76c9307ed61efa7794b30b4e585cc5941ed73e16)

Full Changelog: https://github.com/facebook/metro/compare/v0.72.3...v0.73.0

• [Fix]: Incremental build crashing when garbage collecting modules reachable via multiple paths in the graph. (https://github.com/facebook/metro/commit/50bb451e9cec275cfbc1efda3e1ced3f8a952e15)
• Updated metro logo on startup

Full Changelog: https://github.com/facebook/metro/compare/v0.72.2...v0.72.3

• [Feature] Pass customResolverOptions from bundle URL into resolveRequest (https://github.com/facebook/metro/commit/623b55d54874c77ee51bca6424fca9c3156678ae)
• [Performance] Load hermes-parser conditionally when hermes is enabled (https://github.com/facebook/metro/pull/855 by @EvanBacon)
• [Performance] Lazily import metro-hermes-compiler (https://github.com/facebook/metro/pull/856 by @EvanBacon)

Full Changelog: v0.72.1...v0.72.2

• [Feature] Expose the react-refresh/runtime module as part of the metro-runtime package

NOTE: Experimental features are not covered by semver and can change at any time.

• [Experimental] Add require.context support (https://github.com/facebook/metro/pull/822 by @EvanBacon)

Full Changelog: v0.72.0...v0.72.1

• [Breaking] Enable React 17 new JSX transform (https://github.com/facebook/metro/pull/848 by @danilobuerger)
• ‌[Breaking] Add watcher.additionalExts option, enable inclusion of .cjs and .mjs files by default (c1c6d9c09fa92aa2ba71d803fdfa480e4dbb6a51)
• [Breaking] .json files will no longer be implicitly resolved if removed from resolver.sourceExts (a3dc30aa0d54d65d6dbd426662f59b0ec398a612)
• [Breaking] With a default config, any .jsx files will now be resolved before .json, .ts, .tsx (1b479314dc08f2a2e2f76438971f32fcf431ee89)
• [Breaking] Enable strict CLI validation when metro is passed an invalid subcommand or argument (19c4f7edb85f5b61b056580515348ca9715dd361)
• [Feature] Add start alias for serve CLI command (19c4f7edb85f5b61b056580515348ca9715dd361)

Full Changelog: v0.71.3...v0.72.0