chore(deps): bump @typescript-eslint/parser from 3.10.1 to 4.0.1

[dependabot-preview]

Bumps @typescript-eslint/parser from 3.10.1 to 4.0.1.

Release notes

Sourced from @typescript-eslint/parser's releases.

v4.0.1

4.0.1 (2020-08-31)

Bug Fixes

• eslint-plugin: update parser dependency range (#2445) (2cb6620), closes #2444

v4.0.0

4.0.0 (2020-08-31)

This release comes just a few months after the v3 release due to the much faster than expected turnaround on optional chaining by ESTree. Read on for more details!

Summary of Changes

Breaking:

• feat: support new ESTree optional chaining representation (#2308) (a4bd2a815447867132ce1f6dda574e608834b794)
• feat: consume new scope analysis package (#2039) (abb0617e7cda636064193c65c73f8f8c08d8cb56)
• feat(eslint-plugin): [ban-ts-comment] change default for ts-expect-error to allow-with-description (#2351) (ef85b7b92cf7b83e708bc85b58baca295955d5c8)
• feat(eslint-plugin): [typedef] remove all default options (#2352) (13bd4dd11fc478a18a70e9e71853f099f0833330)
• fix: correct decorator traversal for AssignmentPattern (#2375) (5ab473c07d43da70ddf8827efc8678c376fb15ab)
• feat(eslint-plugin): [no-unnecessary-condition][strict-boolean-expressions] add option to make the rules error on files without strictNullChecks turned on (#2345) (ee5b194e6cb813e8aed0f2889b51d12a2b6964e4)
• feat(typescript-estree): switch to globby (#2418) (789c439a8a80d1c3dc5d6c7ca4c5ae4d1d889a5b)

Non-Breaking:

• feat(eslint-plugin): add consistent-type-imports rule (#2367) (ba9295b774765c293c94c5e82c26804ded25180d)
• feat: add downlevel-dts to all packages with type declarations (a25718358e2c198e387a79d7f175baaa951ad547)

---

Breaking Changes

AST Changes

Support official ESTree optional chaining syntax (#2204)

When TS 3.7 released with optional chaining in November 2019, the feature was still a Stage-3 TC39 spec. This meant that ESTree[1] did not yet have an official AST representation defined, as they only officially support Stage-4 specs.

This meant that we either had to block on TS 3.7 support, unofficially support optional chaining, or find an interim representation to use. As we had no clear timeframe around which both optional chaining would move to Stage-4, and when the ESTree AST for it would be defined, we decided the first two options were sub-optimal, and instead chose to the existing babel-eslint AST representation. This representation has been in the ecosystem for a while and was supported by a variety of plugins.

Recently, ESTree agreed upon and merged an AST for optional chaining, which is vastly different to babel-eslint's representation. ESLint and their parser espree have already implemented and released support for this new AST as of ESLint v7.5.0.

In order to correct course to match the future of the ecosystem, we've update our AST to match the new, official representation.

This means a few things right now:

1. The ESLint core rules will have complete support for optional chaining, without need for extension rules 🎉
2. Users might have to wait for plugins outside this project to update their logic to support this new AST.

Changelog

Sourced from @typescript-eslint/parser's changelog.

4.0.1 (2020-08-31)

Note: Version bump only for package @typescript-eslint/parser

4.0.0 (2020-08-31)

Features

• consume new scope analysis package (#2039) (3be125d)
• support ESTree optional chaining representation (#2308) (e9d2ab6)
• typescript-estree: switch to globby (#2418) (3a7ec9b), closes #2398

BREAKING CHANGES

• typescript-estree: - removes the ability to supply a RegExp to projectFolderIgnoreList, and changes the meaning of the string value from a regex to a glob.

Commits

• 46ad4d0 chore: publish v4.0.1
• c51e3f0 chore: publish v4.0.0
• c3a6c2a chore: add downlevel-dts to all packages with type declarations
• ac0defc chore: update dependencies
• 3a7ec9b feat(typescript-estree): switch to globby (#2418)
• 3be125d feat: consume new scope analysis package (#2039)
• e9d2ab6 feat: support ESTree optional chaining representation (#2308)
• See full diff in compare view

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[github-actions]

🚀 PR was released in @xerox/browserslist-config@1.0.8-next.0, @xerox/commitlint-config@2.1.5-next.0, @xerox/eslint-config@3.1.8-next.0, @xerox/prettier-config@2.2.5-next.0, @xerox/semantic-release-config@2.3.4-next.0, @xerox/stylelint-config@1.1.3-next.0 🚀