Nick2bad4u/eslint-plugin-typefest v1.2.2

on GitHub

[1.2.2] - 2026-04-18

598adda...c99ef2a

✨ Features

• b9c3d9a — ✨ feat(rules): add 6 new rules for type-fest v5.6 and ts-extras v1.0 (R097–R102)

New rules:

• ✨ prefer-type-fest-absolute (R097): replace Abs/AbsoluteValue with Absolute
• ✨ prefer-type-fest-non-nullable-deep (R098): replace DeepNonNullable with NonNullableDeep
• ✨ prefer-type-fest-union-length (R099): replace UnionToTuple['length'] with UnionLength
• ✨ prefer-ts-extras-assert-never (R100): replace manual never checks with assertNever()
• ✨ prefer-ts-extras-is-property-defined (R101): replace filter !== undefined callbacks with isPropertyDefined()
• ✨ prefer-ts-extras-is-property-present (R102): replace filter != null callbacks with isPropertyPresent()

Each rule ships with:

• 📝 Rule source with autofix or hasSuggestions support
• 🧪 RuleTester test coverage including fixer output and fast-check parse-safety guards
• 📁 Valid/invalid typed fixture files
• 📖 Docs page with correct catalog ID placement and required heading structure
• 🗂️ Registration in rules-registry and rule-catalog (R097–R102)
• 🔧 Preset membership (recommended, strict, all, type-fest/types, ts-extras/type-guards as appropriate)

Also:

• 🔄 Sync README rules table and presets matrix with new rules
• 📸 Update Vitest snapshots (docs-heading, plugin-contract, rule-metadata, readme-rules-section)
• 🔐 Switch Codecov uploads in ci.yml and codecov.yml from CODECOV_TOKEN to OIDC (use_oidc: true + id-token: write)

Signed-off-by: Nick2bad4u 20943337+Nick2bad4u@users.noreply.github.com

📦 Dependencies

• d10b1da — ⬆️ [chore] Upgrade eslint and stylelint-config-inspector dependencies

• [dependency] Update eslint ^10.2.1

• Update stylelint-config-inspector from ^2.1.0 to ^2.1.1

• Adjust peer dependency for eslint to ^9.0.0 || ^10.2.1

• Remove size-limit configuration from package.json

Signed-off-by: Nick2bad4u 20943337+Nick2bad4u@users.noreply.github.com

• 993cb97 — ⬆️ [chore] Upgrade dependencies for TypeScript and related packages

• [dependency] Update TypeScript version 6.0.3

• Update ts-extras to version 1.0.0

• Upgrade type-fest to version 5.6.0

• Update fast-check to version 4.7.0

• Upgrade stylelint-config-inspector to version 2.1.0

• Update stylelint-plugin-docusaurus to version 1.0.2

Signed-off-by: Nick2bad4u 20943337+Nick2bad4u@users.noreply.github.com

• 8c06554 — ⬆️ [chore] [dependency] Update dev deps and configure new stylelint rules

⬆️ [chore] Upgrade dev dependencies to latest versions

• @vitest/eslint-plugin: ^1.6.15 → ^1.6.16

• eslint-plugin-case-police: ^2.2.0 → ^2.2.1

• eslint-plugin-stylelint-2: ^1.0.11 → ^1.0.13

• eslint-plugin-typefest: ^1.2.0 → ^1.2.1

• postcss: ^8.5.9 → ^8.5.10

• prettier: ^3.8.2 → ^3.8.3

• stylelint: ^17.7.0 → ^17.8.0

🔧 [chore] (stylelint) Disable new rules from stylelint/plugin upgrades

• @stylistic/no-multiple-whitespaces: null (handled by Prettier)

• defensive-css/no-unsafe-clamp-font-size: null

• defensive-css/no-unsafe-will-change: null

• defensive-css/no-user-select-none: null

• defensive-css/require-at-layer: null

• defensive-css/require-forced-colors-focus: null

• defensive-css/require-pure-selectors: null

• defensive-css/require-system-font-fallback: null

• order/custom-properties-alphabetical-order: null (handled by Prettier)

✨ [chore] (stylelint) Enable new rules from stylelint/plugin upgrades

• property-layout-mappings: "flow-relative"

• relative-selector-nesting-notation: "explicit"

• selector-no-deprecated: true

Signed-off-by: Nick2bad4u 20943337+Nick2bad4u@users.noreply.github.com

• 598adda — ⬆️ [chore] [dependency] Update dev deps and configure new stylelint rules

⬆️ [chore] Upgrade dev dependencies to latest versions

• @vitest/eslint-plugin: ^1.6.15 → ^1.6.16

• eslint-plugin-case-police: ^2.2.0 → ^2.2.1

• eslint-plugin-stylelint-2: ^1.0.11 → ^1.0.13

• eslint-plugin-typefest: ^1.2.0 → ^1.2.1

• postcss: ^8.5.9 → ^8.5.10

• prettier: ^3.8.2 → ^3.8.3

• stylelint: ^17.7.0 → ^17.8.0

🔧 [chore] (stylelint) Disable new rules from stylelint/plugin upgrades

• @stylistic/no-multiple-whitespaces: null (handled by Prettier)

• defensive-css/no-unsafe-clamp-font-size: null

• defensive-css/no-unsafe-will-change: null

• defensive-css/no-user-select-none: null

• defensive-css/require-at-layer: null

• defensive-css/require-forced-colors-focus: null

• defensive-css/require-pure-selectors: null

• defensive-css/require-system-font-fallback: null

• order/custom-properties-alphabetical-order: null (handled by Prettier)

✨ [chore] (stylelint) Enable new rules from stylelint/plugin upgrades

• property-layout-mappings: "flow-relative"

• relative-selector-nesting-notation: "explicit"

• selector-no-deprecated: true

Signed-off-by: Nick2bad4u 20943337+Nick2bad4u@users.noreply.github.com

🧹 Chores

• c99ef2a — Release v1.2.2

• 36f103b — 🧹 [chore] Updates lint tooling and styles

• 🎨 Extracts reusable CSS custom properties for homepage sections, cards, and stats blocks to improve consistency and theme flexibility.

• 🔧 Upgrades lint-related dependencies and switches to the newer Docusaurus stylelint ruleset for better compatibility with current tooling.

Signed-off-by: Nick2bad4u 20943337+Nick2bad4u@users.noreply.github.com

👷 CI/CD

• 7a5f9d4 — 👷 [ci] Add Codecov integration and update CI configuration

• Introduced CODECOV_TOKEN environment variable for Codecov uploads.

• Added step to upload bundle analysis to Codecov for improved coverage tracking.

• Updated CI steps to include conditional upload based on environment variables.

🧹 [chore] Update package.json and package-lock.json for size-limit

• Added size-limit as a dependency and configured size limits for ESM and CJS bundles.

• Updated package-lock.json to reflect new dependencies and their versions.

Signed-off-by: Nick2bad4u 20943337+Nick2bad4u@users.noreply.github.com