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Remove path resolution from internal forks plugin #23255

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merged 1 commit into from Feb 9, 2022

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@acdlite acdlite commented Feb 9, 2022

Alternative to #23254

Our build script has a custom plugin to resolve internal module forks. Currently, it uses require.resolve to resolve the path to a real file on disk.

Instead, I've updated all the forked module paths to match their location on disk, relative to the project root, to remove the need to resolve them in the build script's runtime.

The main motivation is because require.resolve doesn't work with ESM modules, but aside from that, hardcoding the relative paths is more predictable — the Node module resolution algorithm is complicated, and we don't really need its features for this purpose.

@facebook-github-bot facebook-github-bot added CLA Signed React Core Team Opened by a member of the React Core Team labels Feb 9, 2022
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sizebot commented Feb 9, 2022

Comparing: a3bde79...197d453

Critical size changes

Includes critical production bundles, as well as any change greater than 2%:

Name +/- Base Current +/- gzip Base gzip Current gzip
oss-stable/react-dom/cjs/react-dom.production.min.js = 130.35 kB 130.35 kB = 41.82 kB 41.82 kB
oss-experimental/react-dom/cjs/react-dom.production.min.js = 135.53 kB 135.53 kB = 43.35 kB 43.35 kB
facebook-www/ReactDOM-prod.classic.js = 431.14 kB 431.14 kB = 79.11 kB 79.11 kB
facebook-www/ReactDOM-prod.modern.js = 421.08 kB 421.08 kB = 77.68 kB 77.68 kB
facebook-www/ReactDOMForked-prod.classic.js = 431.14 kB 431.14 kB = 79.11 kB 79.11 kB

Significant size changes

Includes any change greater than 0.2%:

(No significant changes)

Generated by 🚫 dangerJS against 197d453

@acdlite acdlite marked this pull request as ready for review February 9, 2022 00:08
acdlite added a commit to acdlite/react that referenced this pull request Feb 9, 2022
Node v16 deprecated the use of trailing "/" to define subpath folder
mappings in the "exports" field of package.json.

We could switch this to "/*" instead. However, the recommendation is to
explicitly list the public paths you want to export.

So instead, we can remove the wildcard export. The only reason we added
it in the first place was because of an implementation detail of the
custom Rollup plugin that we use to resolve forked internal modules at
build time. The plugin relied on require.resolve, which doesn't work
with ESM modules. I fixed this by removing the require.resolve call
in facebook#23255.

The only two affected packages are react-dom and react. We need to be
sure that all our public modules are still reachable. I audited the
exports by comparing the entries to the "files" field in package.json,
which represents a complete list of the files that are included in the
final release artifact.

At some point, we should add an e2e packaging test to prevent
regressions; for now, we should have decent coverage because in CI we
run our Jest test suite against the release artifacts.
Alternative to facebook#23254

Our build script has a custom plugin to resolve internal module forks.
Currently, it uses require.resolve to resolve the path to a real file
on disk.

Instead, I've updated all the forked module paths to match their
location on disk, relative to the project root, to remove the need to
resolve them in the build script's runtime.

The main motivation is because require.resolve doesn't work with ESM
modules, but aside from that, hardcoding the relative paths is more
predictable — the Node module resolution algorithm is complicated, and
we don't really need its features for this purpose.
@acdlite acdlite force-pushed the no-resolve-forks branch 2 times, most recently from 25a68df to 197d453 Compare February 9, 2022 04:34
@acdlite acdlite merged commit 274b9fb into facebook:main Feb 9, 2022
facebook-github-bot pushed a commit to facebook/react-native that referenced this pull request Feb 17, 2022
Summary:
This sync includes the following changes:
- **[27b569969](facebook/react@27b569969 )**: Simplify cache pool contexts ([#23280](facebook/react#23280)) //<Andrew Clark>//
- **[1fb0d0687](facebook/react@1fb0d0687 )**: [Devtools][Transition Tracing] Add Transition callbacks to createRoot ([#23276](facebook/react#23276)) //<Luna Ruan>//
- **[a6987bee7](facebook/react@a6987bee7 )**: add <TracingMarker> component boilerplate ([#23275](facebook/react#23275)) //<Luna Ruan>//
- **[796fff548](facebook/react@796fff548 )**: Allow suspending outside a Suspense boundary ([#23267](facebook/react#23267)) //<Andrew Clark>//
- **[64223fed8](facebook/react@64223fed8 )**: Fix: Multiple hydration errors in same render ([#23273](facebook/react#23273)) //<Andrew Clark>//
- **[efd8f6442](facebook/react@efd8f6442 )**: Resolve default onRecoverableError at root init ([#23264](facebook/react#23264)) //<Andrew Clark>//
- **[e0af1aabe](facebook/react@e0af1aabe )**: Fix wrong context argument to `apply` //<Andrew Clark>//
- **[9b5e0517b](facebook/react@9b5e0517b )**: Remove deprecated wildcard folder mapping ([#23256](facebook/react#23256)) //<Andrew Clark>//
- **[274b9fb16](facebook/react@274b9fb16 )**: Remove path resolution from internal forks plugin ([#23255](facebook/react#23255)) //<Andrew Clark>//

Changelog:
[General][Changed] - React Native sync for revisions a3bde79...27b5699

jest_e2e[run_all_tests]

Reviewed By: rickhanlonii, kacieb

Differential Revision: D34241986

fbshipit-source-id: f6ab62df2a918728864283b4f13201275eb3b8a3
zhengjitf pushed a commit to zhengjitf/react that referenced this pull request Apr 15, 2022
Alternative to facebook#23254

Our build script has a custom plugin to resolve internal module forks.
Currently, it uses require.resolve to resolve the path to a real file
on disk.

Instead, I've updated all the forked module paths to match their
location on disk, relative to the project root, to remove the need to
resolve them in the build script's runtime.

The main motivation is because require.resolve doesn't work with ESM
modules, but aside from that, hardcoding the relative paths is more
predictable — the Node module resolution algorithm is complicated, and
we don't really need its features for this purpose.
Saadnajmi pushed a commit to Saadnajmi/react-native-macos that referenced this pull request Jan 15, 2023
Summary:
This sync includes the following changes:
- **[27b569969](facebook/react@27b569969 )**: Simplify cache pool contexts ([facebook#23280](facebook/react#23280)) //<Andrew Clark>//
- **[1fb0d0687](facebook/react@1fb0d0687 )**: [Devtools][Transition Tracing] Add Transition callbacks to createRoot ([facebook#23276](facebook/react#23276)) //<Luna Ruan>//
- **[a6987bee7](facebook/react@a6987bee7 )**: add <TracingMarker> component boilerplate ([facebook#23275](facebook/react#23275)) //<Luna Ruan>//
- **[796fff548](facebook/react@796fff548 )**: Allow suspending outside a Suspense boundary ([facebook#23267](facebook/react#23267)) //<Andrew Clark>//
- **[64223fed8](facebook/react@64223fed8 )**: Fix: Multiple hydration errors in same render ([facebook#23273](facebook/react#23273)) //<Andrew Clark>//
- **[efd8f6442](facebook/react@efd8f6442 )**: Resolve default onRecoverableError at root init ([facebook#23264](facebook/react#23264)) //<Andrew Clark>//
- **[e0af1aabe](facebook/react@e0af1aabe )**: Fix wrong context argument to `apply` //<Andrew Clark>//
- **[9b5e0517b](facebook/react@9b5e0517b )**: Remove deprecated wildcard folder mapping ([facebook#23256](facebook/react#23256)) //<Andrew Clark>//
- **[274b9fb16](facebook/react@274b9fb16 )**: Remove path resolution from internal forks plugin ([facebook#23255](facebook/react#23255)) //<Andrew Clark>//

Changelog:
[General][Changed] - React Native sync for revisions a3bde79...27b5699

jest_e2e[run_all_tests]

Reviewed By: rickhanlonii, kacieb

Differential Revision: D34241986

fbshipit-source-id: f6ab62df2a918728864283b4f13201275eb3b8a3
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