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refactor(lockfile): remove string concatenation from parsing code #4965

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merged 2 commits into from Oct 11, 2018
Merged

refactor(lockfile): remove string concatenation from parsing code #4965

merged 2 commits into from Oct 11, 2018

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rhendric
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Replace all instances of building strings incrementally using += with more efficient methods.

Summary

This is motivated by #4929, as one cause of "Invalid string length" is trying to concatenate with too large of a string, and the stack trace there points to a string concatenation operation in this function. It's probably not the root cause of #4929, so I wouldn't say this should close that issue until we understand what in the lockfile was causing runaway string concatenation. But it does address the proximate issue and helps with general code health and probably performance as well, if only in a small way.

Test plan

Automated tests should cover regressions. Manually review code to ensure no lingering string concatenation.

Gudahtt
Gudahtt approved these changes Aug 15, 2018
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These changes all look good. Logically equivalent but faster.

@rhendric @Gudahtt
refactor(lockfile): remove string concatenation from parsing code
800b266 
Replace all instances of building strings incrementally using += with more efficient methods.
@rhendric @Gudahtt
fix(lockfile): prevent infinite loop
b7cd239 
Fix bug where yarn could get into an infinite loop when parsing a corrupted lockfile with an
unterminated string.
@Gudahtt Gudahtt merged commit b3d136f into yarnpkg:master Oct 11, 2018
netbsd-srcmastr pushed a commit to NetBSD/pkgsrc that referenced this pull request Nov 22, 2018
@kleink
yarn: Update to 1.12.3.
b5e8a0a 
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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@rhendric @Gudahtt