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@fansenze fansenze released this 12 Aug 09:21
· 18 commits to main since this release
v0.8.0
068ea0c

Highlights

Typed rule configuration in defineConfig

defineConfig() now provides autocomplete and type checking for ESLint core and @typescript-eslint rules. Editors suggest rule names, severity levels, and rule-specific options, and report invalid options before rslint runs.

import { defineConfig } from '@rslint/core';

export default defineConfig([
  {
    rules: {
      // Rule names are autocompleted.
      'no-console': [
        'error',
        {
          // Option names and values are typed for this rule.
          allow: ['warn'],
          // allow: 123, // TypeScript error: expected string[].
        },
      ],
    },
  },
]);

Full typescript-eslint preset support

ts.configs now includes recommendedTypeChecked, strict, strictTypeChecked, stylistic, and stylisticTypeChecked, matching the upstream typescript-eslint presets. As a breaking change, ts.configs.recommended no longer includes ESLint core rules; add js.configs.recommended before it for a complete TypeScript setup.

What's Changed

Breaking Changes 🍭

JavaScript runtime globals must be declared

no-undef now follows ESLint's scope-based global resolution. For plain JavaScript files, Rslint no longer treats globals provided by TypeScript declaration files as implicitly available. ECMAScript built-ins such as Array and Promise remain available by default, but runtime-specific globals such as window, document, process, and __dirname must be declared through languageOptions.globals.

Because js.configs.recommended enables no-undef, projects using this preset may see new diagnostics after upgrading. The globals package can be used to declare the environments each file runs in:

import { defineConfig, js } from '@rslint/core';
import globals from 'globals';

export default defineConfig([
  js.configs.recommended,
  {
    files: ['**/*.js', '**/*.jsx', '**/*.mjs', '**/*.cjs'],
    languageOptions: {
      globals: {
        ...globals.browser,
        ...globals.node,
      },
    },
  },
]);

Only include the environments that apply to those files. See languageOptions.globals for details.

Note: Rslint plans to provide built-in runtime globals presets in a future release, removing the need to install the standalone globals package.

  • feat(config): layer ts.configs.recommended and flatten nested presets by @swwind in #1465

New Features 🎉

  • feat(rstest): add no-conditional-expect rule by @elecmonkey in #1548
  • feat(rstest): add expect assertion parser by @elecmonkey in #1595
  • feat(jest,rstest): add shared AST utilities by @elecmonkey in #1594
  • feat: resolve globals to off/readonly/writable levels by @swwind in #1551
  • feat: port rule import/no-restricted-paths by @swwind in #1561
  • feat: port rule unicode-bom by @swwind in #1560
  • feat: port rule no-useless-return by @swwind in #1583
  • feat(typescript-eslint): implement restrict-template-expressions by @swwind in #1558
  • feat: port rule consistent-return by @swwind in #1580
  • feat(typescript-eslint): port rule no-unnecessary-type-parameters by @swwind in #1612
  • feat(config): ship the remaining typescript-eslint presets by @swwind in #1608
  • feat(typescript-eslint): declare options JSON Schema for @typescript-eslint/ rules by @swwind in #1469
  • feat(jest,rstest): parse setup and teardown hooks by @elecmonkey in #1593
  • feat(rstest): add no-interpolation-in-snapshots rule by @elecmonkey in #1604
  • feat(rstest): add valid-title rule by @elecmonkey in #1606
  • feat: support languageOptions.ecmaVersion by @fansenze in #1603
  • feat: support client-specified LSP config path by @fansenze in #1630
  • feat(eslint): declare options JSON Schema for eslint core rules by @swwind in #1480
  • feat: generate TypeScript types for native rule options by @swwind in #1279

Performance 🚀

Bug Fixes 🐞

  • fix: align error-message static evaluation by @fansenze in #1579
  • fix(prefer-for-of): count shorthand property uses of the loop index by @swwind in #1591
  • fix(cfg): lay out a for statement's incrementor before its body by @swwind in #1588
  • fix: resolve require() calls TypeScript never recorded by @swwind in #1577
  • fix: resolve type-only heritage qualifiers in RefStore by @fansenze in #1607
  • fix(typescript-eslint): align type specifier matching by @fansenze in #1609
  • fix: align core function display names with ESLint by @fansenze in #1615
  • fix(jest): correct accessor ranges in matcher chains by @elecmonkey in #1576
  • fix: preserve type parameter comments by @fansenze in #1616
  • fix: decode restrict-plus-operands options by @fansenze in #1618
  • fix: stabilize main branch CI tests by @fansenze in #1620
  • fix: mark prefer-optional-chain as type-aware by @fansenze in #1621
  • fix(jest): preserve semantics in accessor edits by @elecmonkey in #1463
  • fix: ignore interpolation in inline snapshot messages by @fansenze in #1623
  • fix: harden rstest valid-title handling by @fansenze in #1624
  • fix: prevent prefer-array-some panic and reduce listener work by @fansenze in #1639
  • fix: align and optimize no-restricted-syntax by @fansenze in #1672
  • fix: apply file language defaults by @fansenze in #1675
  • fix: align no-undef TypeScript references by @fansenze in #1670
  • fix(rstest): widen registration parsing for no-disabled-tests and no-identical-title by @elecmonkey in #1674
  • fix: align no-redeclare TypeScript globals by @fansenze in #1682
  • fix(prefer-optional-chain): align chain analysis with typescript-eslint by @swwind in #1679
  • fix: align no-label-var TypeScript scopes by @fansenze in #1683
  • fix: align no-shadow with upstream by @fansenze in #1689

Refactor 🔨

  • refactor(typescript-eslint): match no-deprecated allow specifiers with the shared matcher by @swwind in #1598
  • refactor: use project-local core in VS Code by @fansenze in #1617
  • refactor: remove legacy rule options compatibility code by @swwind in #1667
  • refactor: parse rule options by type assertion instead of JSON round-trips by @swwind in #1677

Document 📖

  • docs(website): group documentation sidebars by @SoonIter in #1613
  • docs: update port-rule option parsing guidance by @fansenze in #1673
  • docs(unicorn): record each rule's aligned upstream version by @swwind in #1680
  • docs(import): record each rule's aligned upstream version by @swwind in #1681
  • docs(promise): record each rule's aligned upstream version by @swwind in #1684
  • docs(jsx-a11y): record each rule's aligned upstream version by @swwind in #1686
  • docs(react): record each rule's aligned upstream version by @swwind in #1687
  • docs(eslint): record each core ESLint rule's aligned upstream version by @swwind in #1694
  • docs(typescript): record each rule's aligned upstream version by @swwind in #1693
  • docs(jest): record each rule's aligned upstream version by @swwind in #1692

Other Changes

  • test(vscode): stabilize parent-ignore catalog regression by @fansenze in #1592
  • test: build the no-undef nil-checker program from the embedded fixtures root by @swwind in #1596
  • test: pass the process cwd to lintSingleFile in the unicode-bom test by @swwind in #1599
  • ci: increase Windows Go package parallelism to 32 by @fansenze in #1622
  • chore(deps): update dependency memfs to ^4.68.0 by @renovate[bot] in #1661
  • chore(deps): update dependency @types/node to ^26.2.0 by @renovate[bot] in #1660
  • chore(deps): update dependency swr to ^2.5.0 by @renovate[bot] in #1662
  • chore(deps): update module golang.org/x/tools to v0.48.0 by @renovate[bot] in #1664
  • chore(deps): update rust crate insta to 1.48.0 by @renovate[bot] in #1665
  • test: resolve rule source paths under -trimpath builds by @swwind in #1669
  • chore: publish tsgo independently by @fansenze in #1699
  • ci: prepare wasm artifacts for npm release by @fansenze in #1691

Full Changelog: v0.7.3...v0.8.0

Contributors

renovate, fansenze, and 3 other contributors
Assets 2
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