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PnP ESLint compatibility #6449

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Sep 28, 2018
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@arcanis arcanis commented Sep 28, 2018

Summary

The subject has been covered in various other topics (eslint/eslint#10125 and derivates), but basically the way ESLint works doesn't allow react-scripts to cleanly provide its own lint plugins. Since it's an important use case I want to support, something has to be done.

This diff makes it so that react-scripts becomes a fallback of its own if found in the dependency tree (it still has a lower priority than the top-level fallback). Note that these fallbacks are not considered for files loaded from the top-level package (meaning that an application file doing require('foo') without listing foo in the top-level package.json will throw, even if react-scripts depends on foo). This ensures people won't accidentally rely on the fallback when developing their own applications.

Test plan

I explicitly don't want to test this, since it's a workaround and this kind of behavior should not be expected globally speaking.

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buildsize bot commented Sep 28, 2018

File name Previous Size New Size Change
yarn-[version].noarch.rpm 1.07 MB 1.07 MB 211 bytes (0%)
yarn-[version].js 4.2 MB 4.2 MB 1.08 KB (0%)
yarn-legacy-[version].js 4.37 MB 4.37 MB 1.08 KB (0%)
yarn-v[version].tar.gz 1.07 MB 1.08 MB 1.66 KB (0%)
yarn_[version]all.deb 791.13 KB 791.41 KB 278 bytes (0%)

@arcanis arcanis force-pushed the eslint-compatibility branch 3 times, most recently from 8322604 to 52b4b53 Compare September 28, 2018 09:45
@arcanis arcanis merged commit ed2c8a5 into yarnpkg:master Sep 28, 2018
netbsd-srcmastr pushed a commit to NetBSD/pkgsrc that referenced this pull request Nov 22, 2018
Changelog tracks back up to 1.12.0 only.

## 1.12.3

**Important:** This release contains a cache bump. It will cause the very first install following the upgrade to take slightly more time, especially if you don't use the [Offline Mirror](https://yarnpkg.com/blog/2016/11/24/offline-mirror/) feature. After that everything will be back to normal.

- Fixes an issue with `yarn audit` when using workspaces

  [6625](yarnpkg/yarn#6639) - [**Jeff Valore**](https://twitter.com/codingwithspike)

- Uses `NODE_OPTIONS` to instruct Node to load the PnP hook, instead of raw CLI arguments

  **Caveat:** This change might cause issues for PnP users having a space inside their cwd (cf [nodejs/node24065](nodejs/node#24065))

  [6479](yarnpkg/yarn#6629) - [**Maël Nison**](https://twitter.com/arcanis)

- Fixes Gulp when used with Plug'n'Play

  [6623](yarnpkg/yarn#6623) - [**Maël Nison**](https://twitter.com/arcanis)

- Fixes an issue with `yarn audit` when the root package was missing a name

  [6611](yarnpkg/yarn#6611) - [**Jack Zhao**](https://github.com/bugzpodder)

- Fixes an issue with `yarn audit` when a package was depending on an empty range

  [6611](yarnpkg/yarn#6611) - [**Jack Zhao**](https://github.com/bugzpodder)

- Fixes an issue with how symlinks are setup into the cache on Windows

  [6621](yarnpkg/yarn#6621) - [**Yoad Snapir**](https://github.com/yoadsn)

- Upgrades `inquirer`, fixing `upgrade-interactive` for users using both Node 10 and Windows

  [6635](yarnpkg/yarn#6635) - [**Philipp Feigl**](https://github.com/pfeigl)

- Exposes the path to the PnP file using `require.resolve('pnpapi')`

  [6643](yarnpkg/yarn#6643) - [**Maël Nison**](https://twitter.com/arcanis)

## 1.12.2

This release doesn't actually exists and was caused by a quirk in our systems.

## 1.12.1

- Ensures the engine check is ran before showing the UI for `upgrade-interactive`

  [6536](yarnpkg/yarn#6536) - [**Orta Therox**](https://github.com/orta)

- Restores Node v4 support by downgrading `cli-table3`

  [6535](yarnpkg/yarn#6535) - [**Mark Stacey**](https://github.com/Gudahtt)

- Prevents infinite loop when parsing corrupted lockfiles with unterminated strings

  [4965](yarnpkg/yarn#4965) - [**Ryan Hendrickson**](https://github.com/rhendric)

- Environment variables now have to **start** with `YARN_` (instead of just contain it) to be considered

  [6518](yarnpkg/yarn#6518) - [**Michael Gmelin**](https://blog.grem.de)

- Fixes the `extensions` option when used by `resolveRequest`

  [6479](yarnpkg/yarn#6479) - [**Maël Nison**](https://twitter.com/arcanis)

- Fixes handling of empty string entries for `bin` in package.json

  [6515](yarnpkg/yarn#6515) - [**Ryan Burrows**](https://github.com/rhburrows)

- Adds support for basic auth for registries with paths, such as artifactory

  [5322](yarnpkg/yarn#5322) - [**Karolis Narkevicius**](https://twitter.com/KidkArolis)

- Adds 2FA (Two Factor Authentication) support to publish & alike

  [6555](yarnpkg/yarn#6555) - [**Krzysztof Zbudniewek**](https://github.com/neonowy)

- Fixes how the `files` property is interpreted to bring it in line with npm

  [6562](yarnpkg/yarn#6562) - [**Bertrand Marron**](https://github.com/tusbar)

- Fixes Yarn invocations on Darwin when the `yarn` binary was symlinked

  [6568](yarnpkg/yarn#6568) - [**Hidde Boomsma**](https://github.com/hboomsma)

- Fixes `require.resolve` when used together with the `paths` option

  [6565](yarnpkg/yarn#6565) - [**Maël Nison**](https://twitter.com/arcanis)

## 1.12.0

- Adds initial support for PnP on Windows

  [6447](yarnpkg/yarn#6447) - [**John-David Dalton**](https://twitter.com/jdalton)

- Adds `yarn audit` (and the `--audit` flag for all installs)

  [6409](yarnpkg/yarn#6409) - [**Jeff Valore**](https://github.com/rally25rs)

- Adds a special logic to PnP for ESLint compatibility (temporary, until [eslint/eslint10125](eslint/eslint#10125) is fixed)

  [6449](yarnpkg/yarn#6449) - [**Maël Nison**](https://twitter.com/arcanis)

- Makes the PnP hook inject a `process.versions.pnp` variable when setup (equals to `VERSIONS.std`)

  [6464](yarnpkg/yarn#6464) - [**Maël Nison**](https://twitter.com/arcanis)

- Disables by default (configurable) the automatic migration of the `integrity` field. **It will be re-enabled in 2.0.**

  [6465](yarnpkg/yarn#6465) - [**Maël Nison**](https://twitter.com/arcanis)

- Fixes the display name of the faulty package when the NPM registry returns corrupted data

  [6455](yarnpkg/yarn#6455) - [**Grey Baker**](https://github.com/greysteil)

- Prevents crashes when running `yarn outdated` and the NPM registry forgets to return the `latest` tag

  [6454](yarnpkg/yarn#6454) - [**mad-mike**](https://github.com/mad-mike)

- Fixes `yarn run` when used together with workspaces and PnP

  [6444](yarnpkg/yarn#6444) - [**Maël Nison**](https://twitter.com/arcanis)

- Fixes an edge case when peer dependencies were resolved multiple levels deep (`webpack-dev-server`)

  [6443](yarnpkg/yarn#6443) - [**Maël Nison**](https://twitter.com/arcanis)
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