fix(eslint-plugin): [no-useless-default-assignment] handle conditional initializer by ulrichstark · Pull Request #11908 · typescript-eslint/typescript-eslint

ulrichstark · 2025-12-30T19:56:11Z

PR Checklist

Addresses an existing open issue: fixes Bug: [no-useless-default-assignment] false positive with ternary #11850
That issue was marked as accepting prs
Steps in Contributing were taken

Overview

…l initializer

typescript-eslint · 2025-12-30T19:56:15Z

Thanks for the PR, @ulrichstark!

typescript-eslint is a 100% community driven project, and we are incredibly grateful that you are contributing to that community.

The core maintainers work on this in their personal time, so please understand that it may not be possible for them to review your work immediately.

Thanks again!

🙏 Please, if you or your company is finding typescript-eslint valuable, help us sustain the project by sponsoring it transparently on https://opencollective.com/typescript-eslint.

netlify · 2025-12-30T19:56:17Z

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nx-cloud · 2025-12-30T19:57:39Z

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codecov · 2025-12-30T20:08:18Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.68%. Comparing base (6a05a1a) to head (1a56206).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #11908   +/-   ##
=======================================
  Coverage   90.67%   90.68%           
=======================================
  Files         525      525           
  Lines       53491    53491           
  Branches     8930     8938    +8     
=======================================
+ Hits        48502    48507    +5     
+ Misses       4976     4971    -5     
  Partials       13       13

Flag	Coverage Δ
unittest	`90.68% <100.00%> (+<0.01%)`	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...-plugin/src/rules/no-useless-default-assignment.ts	`99.62% <100.00%> (+0.01%)`	⬆️

... and 1 file with indirect coverage changes

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JoshuaKGoldberg

LGTM! Just one note that we can always edit in before merge. Thanks! ✨

packages/eslint-plugin/tests/rules/no-useless-default-assignment.test.ts

ulrichstark · 2026-01-01T15:38:18Z

Done! Happy New Year 🥳

JoshuaKGoldberg

Happy new year! ⛄

| datasource | package | from | to | | ---------- | -------------------------------- | ------ | ------ | | npm | @typescript-eslint/eslint-plugin | 8.51.0 | 8.52.0 | | npm | @typescript-eslint/parser | 8.51.0 | 8.52.0 | ## [v8.52.0](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8520-2026-01-05) ##### 🚀 Features - **eslint-plugin-internal:** \[no-multiple-lines-of-errors] add rule ([#11899](typescript-eslint/typescript-eslint#11899)) ##### 🩹 Fixes - **eslint-plugin:** \[no-base-to-string] detect @[@toPrimitive](https://github.com/toPrimitive) and valueOf ([#11901](typescript-eslint/typescript-eslint#11901)) - **eslint-plugin:** \[no-useless-default-assignment] handle conditional initializer ([#11908](typescript-eslint/typescript-eslint#11908)) ##### ❤️ Thank You - Josh Goldberg ✨ - Ulrich Stark You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website.

This MR contains the following updates: | Package | Type | Update | Change | OpenSSF | |---|---|---|---|---| | [@mui/x-charts](https://mui.com/x/react-charts/) ([source](https://github.com/mui/mui-x/tree/HEAD/packages/x-charts)) | dependencies | minor | [`8.23.0` → `8.24.0`](https://renovatebot.com/diffs/npm/@mui%2fx-charts/8.23.0/8.24.0) | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/mui/mui-x/badge)](https://securityscorecards.dev/viewer/?uri=github.com/mui/mui-x) | | [@mui/x-tree-view](https://mui.com/x/react-tree-view/) ([source](https://github.com/mui/mui-x/tree/HEAD/packages/x-tree-view)) | dependencies | minor | [`8.23.0` → `8.24.0`](https://renovatebot.com/diffs/npm/@mui%2fx-tree-view/8.23.0/8.24.0) | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/mui/mui-x/badge)](https://securityscorecards.dev/viewer/?uri=github.com/mui/mui-x) | | [@openapitools/openapi-generator-cli](https://github.com/OpenAPITools/openapi-generator-cli) | devDependencies | minor | [`2.26.0` → `2.27.0`](https://renovatebot.com/diffs/npm/@openapitools%2fopenapi-generator-cli/2.26.0/2.27.0) | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/OpenAPITools/openapi-generator-cli/badge)](https://securityscorecards.dev/viewer/?uri=github.com/OpenAPITools/openapi-generator-cli) | | [@typescript-eslint/eslint-plugin](https://typescript-eslint.io/packages/eslint-plugin) ([source](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/eslint-plugin)) | devDependencies | minor | [`8.51.0` → `8.53.0`](https://renovatebot.com/diffs/npm/@typescript-eslint%2feslint-plugin/8.51.0/8.53.0) | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/typescript-eslint/typescript-eslint/badge)](https://securityscorecards.dev/viewer/?uri=github.com/typescript-eslint/typescript-eslint) | | [@typescript-eslint/parser](https://typescript-eslint.io/packages/parser) ([source](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/parser)) | devDependencies | minor | [`8.51.0` → `8.53.0`](https://renovatebot.com/diffs/npm/@typescript-eslint%2fparser/8.51.0/8.53.0) | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/typescript-eslint/typescript-eslint/badge)](https://securityscorecards.dev/viewer/?uri=github.com/typescript-eslint/typescript-eslint) | | [react-router-dom](https://github.com/remix-run/react-router) ([source](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router-dom)) | dependencies | minor | [`7.11.0` → `7.12.0`](https://renovatebot.com/diffs/npm/react-router-dom/7.11.0/7.12.0) | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/remix-run/react-router/badge)](https://securityscorecards.dev/viewer/?uri=github.com/remix-run/react-router) | --- ### Release Notes <details> <summary>mui/mui-x (@mui/x-charts)</summary> ### [`v8.24.0`](https://github.com/mui/mui-x/blob/HEAD/CHANGELOG.md#8240) [Compare Source](mui/mui-x@v8.23.0...v8.24.0) *Jan 8, 2026* We'd like to extend a big thank you to the 12 contributors who made this release possible. Here are some highlights ✨: - ⚡️Add bar [batch renderer](https://mui.com/x/react-charts/bars/#performance), result in a significant performance improvement when rendering thousands of bars - 📊 Add [range bar chart](https://mui.com/x/react-charts/range-bar/) to render ![image](https://github.com/user-attachments/assets/4112c09b-d841-42f7-a0c8-d23b61c23ca0) - 🌎 Improved Danish (da-DK) and Japanese (ja-JP) locales on the Data Grid Special thanks go out to these community members for their valuable contributions: [@anders-noerrelykke](https://github.com/anders-noerrelykke), [@auloin](https://github.com/auloin), [@sai6855](https://github.com/sai6855), [@yuito-it](https://github.com/yuito-it) The following team members contributed to this release: [@alelthomas](https://github.com/alelthomas), [@alexfauquette](https://github.com/alexfauquette), [@arminmeh](https://github.com/arminmeh), [@bernardobelchior](https://github.com/bernardobelchior), [@flaviendelangle](https://github.com/flaviendelangle), [@JCQuintas](https://github.com/JCQuintas), [@mapache-salvaje](https://github.com/mapache-salvaje), [@siriwatknp](https://github.com/siriwatknp) ##### Data Grid ##### `@mui/x-data-grid@8.24.0` - \[l10n] Improve Danish (da-DK) locale ([#20828](mui/mui-x#20828)) [@anders-noerrelykke](https://github.com/anders-noerrelykke) - \[l10n] Improve Japanese (ja-JP) locale ([#20251](mui/mui-x#20251)) [@yuito-it](https://github.com/yuito-it) ##### `@mui/x-data-grid-pro@8.24.0` [![pro](https://mui.com/r/x-pro-svg)](https://mui.com/r/x-pro-svg-link "Pro plan") Same changes as in `@mui/x-data-grid@8.24.0`, plus: - \[DataGridPro] Fix header filter height for `density="compact"` ([#20834](mui/mui-x#20834)) [@arminmeh](https://github.com/arminmeh) ##### `@mui/x-data-grid-premium@8.24.0` [![premium](https://mui.com/r/x-premium-svg)](https://mui.com/r/x-premium-svg-link "Premium plan") Same changes as in `@mui/x-data-grid-pro@8.24.0`. ##### Date and Time Pickers ##### `@mui/x-date-pickers@8.24.0` - \[pickers] Fix Styles applied to PickersDay when MuiPickersDay-dayOutsideMonth is used ([#20719](mui/mui-x#20719)) [@sai6855](https://github.com/sai6855) ##### `@mui/x-date-pickers-pro@8.24.0` [![pro](https://mui.com/r/x-pro-svg)](https://mui.com/r/x-pro-svg-link "Pro plan") Same changes as in `@mui/x-date-pickers@8.24.0`. ##### Charts ##### `@mui/x-charts@8.24.0` - \[charts] Add `VisibilityManager` logic to allow managing series/items ([#20571](mui/mui-x#20571)) [@JCQuintas](https://github.com/JCQuintas) - \[charts] Add `identifierSerializer` configuration ([#20775](mui/mui-x#20775)) [@JCQuintas](https://github.com/JCQuintas) - \[charts] Add `serializeIdentifier` instance function ([#20791](mui/mui-x#20791)) [@JCQuintas](https://github.com/JCQuintas) - \[charts] Add bar batch renderer ([#20457](mui/mui-x#20457)) [@bernardobelchior](https://github.com/bernardobelchior) - \[charts] Allow animating bar, line, and pie elements to hidden state ([#20798](mui/mui-x#20798)) [@JCQuintas](https://github.com/JCQuintas) - \[charts] Fix failing lint step ([#20813](mui/mui-x#20813)) [@bernardobelchior](https://github.com/bernardobelchior) - \[charts] Fix tooltip anchored to item ([#20783](mui/mui-x#20783)) [@alexfauquette](https://github.com/alexfauquette) - \[charts] Fix type casting in getCategoryAxisConfig and applySeriesLayout functions ([#20797](mui/mui-x#20797)) [@sai6855](https://github.com/sai6855) - \[charts] Let keyboard navigation avoid overflow and handle nullish values ([#20757](mui/mui-x#20757)) [@alexfauquette](https://github.com/alexfauquette) - \[charts] Refactor `PieChart` and `PieChartPro` to use `slots` and `slotProps` directly ([#20795](mui/mui-x#20795)) [@sai6855](https://github.com/sai6855) - \[charts] Refactor `useRegisterPointerEventHandlers` ([#20824](mui/mui-x#20824)) [@bernardobelchior](https://github.com/bernardobelchior) - \[charts] Update legend types to allow hiding/showing items ([#20784](mui/mui-x#20784)) [@JCQuintas](https://github.com/JCQuintas) ##### `@mui/x-charts-pro@8.24.0` [![pro](https://mui.com/r/x-pro-svg)](https://mui.com/r/x-pro-svg-link "Pro plan") Same changes as in `@mui/x-charts@8.24.0`, plus: - \[charts-pro] Pass `slotProps.toolbar` to `Toolbar` in `PieChartPro` ([#20796](mui/mui-x#20796)) [@sai6855](https://github.com/sai6855) ##### `@mui/x-charts-premium@8.24.0` [![premium](https://mui.com/r/x-premium-svg)](https://mui.com/r/x-premium-svg-link "Premium plan") Same changes as in `@mui/x-charts-pro@8.24.0`, plus: - \[charts-premium] Add range bar chart ([#20275](mui/mui-x#20275)) [@bernardobelchior](https://github.com/bernardobelchior) ##### Tree View ##### `@mui/x-tree-view@8.24.0` - \[tree view] Introduce a Tree View Store to clean the internals ([#20051](mui/mui-x#20051)) [@flaviendelangle](https://github.com/flaviendelangle) ##### `@mui/x-tree-view-pro@8.24.0` [![pro](https://mui.com/r/x-pro-svg)](https://mui.com/r/x-pro-svg-link "Pro plan") Same changes as in `@mui/x-tree-view@8.24.0`. ##### Codemod ##### `@mui/x-codemod@8.24.0` Internal changes. ##### Docs - \[docs] Fix axis size default values ([#20799](mui/mui-x#20799)) [@bernardobelchior](https://github.com/bernardobelchior) - \[docs] Update What's New in MUI X page with post v8 features (DX-118) ([#20787](mui/mui-x#20787)) [@alelthomas](https://github.com/alelthomas) - \[docs] Fix `onAccept`'s `context.source` documentation to use 'view' instead of 'picker' ([#20465](mui/mui-x#20465)) [@auloin](https://github.com/auloin) - \[docs] Revise the Charts Brush doc ([#20792](mui/mui-x#20792)) [@mapache-salvaje](https://github.com/mapache-salvaje) - \[docs] Revise the Charts Highlighting doc ([#20788](mui/mui-x#20788)) [@mapache-salvaje](https://github.com/mapache-salvaje) - \[docs] Revise the Charts Label doc ([#20794](mui/mui-x#20794)) [@mapache-salvaje](https://github.com/mapache-salvaje) - \[docs] Revise the Charts Export doc ([#20779](mui/mui-x#20779)) [@mapache-salvaje](https://github.com/mapache-salvaje) ##### Core - \[code-infra] Fix v8.23.0 release date ([#20767](mui/mui-x#20767)) [@bernardobelchior](https://github.com/bernardobelchior) - \[code-infra] Remove `glob-gitignore` ([#20801](mui/mui-x#20801)) [@bernardobelchior](https://github.com/bernardobelchior) - \[code-infra] Remove `nyc` ([#20804](mui/mui-x#20804)) [@bernardobelchior](https://github.com/bernardobelchior) - \[code-infra] Remove `stream-browserify` and `null-loader` ([#20805](mui/mui-x#20805)) [@bernardobelchior](https://github.com/bernardobelchior) - \[code-infra] Remove `stylelint-config-tailwindcss` ([#20807](mui/mui-x#20807)) [@bernardobelchior](https://github.com/bernardobelchior) - \[code-infra] Remove unused `path` package ([#20802](mui/mui-x#20802)) [@bernardobelchior](https://github.com/bernardobelchior) - \[code-infra] Retry flaky e2e test on webkit ([#20806](mui/mui-x#20806)) [@JCQuintas](https://github.com/JCQuintas) - \[internal] Add `internal` slot to properly generate components CSS layer ([#20763](mui/mui-x#20763)) [@siriwatknp](https://github.com/siriwatknp) </details> <details> <summary>OpenAPITools/openapi-generator-cli (@openapitools/openapi-generator-cli)</summary> ### [`v2.27.0`](https://github.com/OpenAPITools/openapi-generator-cli/releases/tag/v2.27.0) [Compare Source](OpenAPITools/openapi-generator-cli@v2.26.0...v2.27.0) ##### Features - **config:** add support for environment variable placeholders in config ([#1031](OpenAPITools/openapi-generator-cli#1031)) ([1cd2614](OpenAPITools/openapi-generator-cli@1cd2614)) </details> <details> <summary>typescript-eslint/typescript-eslint (@typescript-eslint/eslint-plugin)</summary> ### [`v8.53.0`](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8530-2026-01-12) [Compare Source](typescript-eslint/typescript-eslint@v8.52.0...v8.53.0) ##### 🚀 Features - **eslint-plugin:** add rule \[strict-void-return] ([#9707](typescript-eslint/typescript-eslint#9707)) - **eslint-plugin:** \[no-unused-vars] add a fixer to remove unused imports ([#11922](typescript-eslint/typescript-eslint#11922)) ##### 🩹 Fixes - **eslint-plugin:** \[no-useless-default-assignment] fix false positive for parameters corresponding to a rest parameter ([#11916](typescript-eslint/typescript-eslint#11916)) - **eslint-plugin:** replace unclear "`error` typed" with more helpful description ([#11704](typescript-eslint/typescript-eslint#11704)) - **typescript-estree:** forbid invalid `extends` and `implements` in interface declaration ([#11935](typescript-eslint/typescript-eslint#11935)) - **typescript-estree:** forbid invalid class implements ([#11934](typescript-eslint/typescript-eslint#11934)) - **typescript-estree:** forbid type-only import with both default and named specifiers ([#11930](typescript-eslint/typescript-eslint#11930)) ##### ❤️ Thank You - Brad Zacher [@bradzacher](https://github.com/bradzacher) - fisker Cheung [@fisker](https://github.com/fisker) - Josh Goldberg - Josh Goldberg ✨ - Kirk Waiblinger - Niki [@phaux](https://github.com/phaux) - Nikita - SungHyun627 [@SungHyun627](https://github.com/SungHyun627) - Will Harney [@wjhsf](https://github.com/wjhsf) You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ### [`v8.52.0`](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8520-2026-01-05) [Compare Source](typescript-eslint/typescript-eslint@v8.51.0...v8.52.0) ##### 🚀 Features - **eslint-plugin-internal:** \[no-multiple-lines-of-errors] add rule ([#11899](typescript-eslint/typescript-eslint#11899)) ##### 🩹 Fixes - **eslint-plugin:** \[no-base-to-string] detect @[@toPrimitive](https://github.com/toPrimitive) and valueOf ([#11901](typescript-eslint/typescript-eslint#11901)) - **eslint-plugin:** \[no-useless-default-assignment] handle conditional initializer ([#11908](typescript-eslint/typescript-eslint#11908)) ##### ❤️ Thank You - Josh Goldberg ✨ - Ulrich Stark You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. </details> <details> <summary>typescript-eslint/typescript-eslint (@typescript-eslint/parser)</summary> ### [`v8.53.0`](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/parser/CHANGELOG.md#8530-2026-01-12) [Compare Source](typescript-eslint/typescript-eslint@v8.52.0...v8.53.0) This was a version bump only for parser to align it with other projects, there were no code changes. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ### [`v8.52.0`](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/parser/CHANGELOG.md#8520-2026-01-05) [Compare Source](typescript-eslint/typescript-eslint@v8.51.0...v8.52.0) This was a version bump only for parser to align it with other projects, there were no code changes. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. </details> <details> <summary>remix-run/react-router (react-router-dom)</summary> ### [`v7.12.0`](https://github.com/remix-run/react-router/blob/HEAD/packages/react-router-dom/CHANGELOG.md#7120) [Compare Source](https://github.com/remix-run/react-router/compare/react-router-dom@7.11.0...react-router-dom@7.12.0) ##### Patch Changes - Updated dependencies: - `react-router@7.12.0` </details> --- - [ ] If you want to rebase/retry this MR, check this box --- This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).  See merge request swiss-armed-forces/cyber-command/cea/loom!243 Co-authored-by: shrewd-laidback palace <shrewd-laidback-palace-736-c41-2c1-e464fc974@swiss-armed-forces-open-source.ch> Co-authored-by: Loom MR Pipeline Trigger <group_103951964_bot_9504bb8dead6d4e406ad817a607f24be@noreply.gitlab.com>

chore(deps): update frontend dependencies (minor) (minor) This MR contains the following updates: | Package | Type | Update | Change | OpenSSF | |---|---|---|---|---| | [@mui/x-charts](https://mui.com/x/react-charts/) ([source](https://github.com/mui/mui-x/tree/HEAD/packages/x-charts)) | dependencies | minor | [`8.23.0` → `8.24.0`](https://renovatebot.com/diffs/npm/@mui%2fx-charts/8.23.0/8.24.0) | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/mui/mui-x/badge)](https://securityscorecards.dev/viewer/?uri=github.com/mui/mui-x) | | [@mui/x-tree-view](https://mui.com/x/react-tree-view/) ([source](https://github.com/mui/mui-x/tree/HEAD/packages/x-tree-view)) | dependencies | minor | [`8.23.0` → `8.24.0`](https://renovatebot.com/diffs/npm/@mui%2fx-tree-view/8.23.0/8.24.0) | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/mui/mui-x/badge)](https://securityscorecards.dev/viewer/?uri=github.com/mui/mui-x) | | [@openapitools/openapi-generator-cli](https://github.com/OpenAPITools/openapi-generator-cli) | devDependencies | minor | [`2.26.0` → `2.27.0`](https://renovatebot.com/diffs/npm/@openapitools%2fopenapi-generator-cli/2.26.0/2.27.0) | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/OpenAPITools/openapi-generator-cli/badge)](https://securityscorecards.dev/viewer/?uri=github.com/OpenAPITools/openapi-generator-cli) | | [@typescript-eslint/eslint-plugin](https://typescript-eslint.io/packages/eslint-plugin) ([source](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/eslint-plugin)) | devDependencies | minor | [`8.51.0` → `8.53.0`](https://renovatebot.com/diffs/npm/@typescript-eslint%2feslint-plugin/8.51.0/8.53.0) | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/typescript-eslint/typescript-eslint/badge)](https://securityscorecards.dev/viewer/?uri=github.com/typescript-eslint/typescript-eslint) | | [@typescript-eslint/parser](https://typescript-eslint.io/packages/parser) ([source](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/parser)) | devDependencies | minor | [`8.51.0` → `8.53.0`](https://renovatebot.com/diffs/npm/@typescript-eslint%2fparser/8.51.0/8.53.0) | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/typescript-eslint/typescript-eslint/badge)](https://securityscorecards.dev/viewer/?uri=github.com/typescript-eslint/typescript-eslint) | | [react-router-dom](https://github.com/remix-run/react-router) ([source](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router-dom)) | dependencies | minor | [`7.11.0` → `7.12.0`](https://renovatebot.com/diffs/npm/react-router-dom/7.11.0/7.12.0) | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/remix-run/react-router/badge)](https://securityscorecards.dev/viewer/?uri=github.com/remix-run/react-router) | --- ### Release Notes <details> <summary>mui/mui-x (@mui/x-charts)</summary> ### [`v8.24.0`](https://github.com/mui/mui-x/blob/HEAD/CHANGELOG.md#8240) [Compare Source](mui/mui-x@v8.23.0...v8.24.0) *Jan 8, 2026* We'd like to extend a big thank you to the 12 contributors who made this release possible. Here are some highlights ✨: - ⚡️Add bar [batch renderer](https://mui.com/x/react-charts/bars/#performance), result in a significant performance improvement when rendering thousands of bars - 📊 Add [range bar chart](https://mui.com/x/react-charts/range-bar/) to render ![image](https://github.com/user-attachments/assets/4112c09b-d841-42f7-a0c8-d23b61c23ca0) - 🌎 Improved Danish (da-DK) and Japanese (ja-JP) locales on the Data Grid Special thanks go out to these community members for their valuable contributions: [@anders-noerrelykke](https://github.com/anders-noerrelykke), [@auloin](https://github.com/auloin), [@sai6855](https://github.com/sai6855), [@yuito-it](https://github.com/yuito-it) The following team members contributed to this release: [@alelthomas](https://github.com/alelthomas), [@alexfauquette](https://github.com/alexfauquette), [@arminmeh](https://github.com/arminmeh), [@bernardobelchior](https://github.com/bernardobelchior), [@flaviendelangle](https://github.com/flaviendelangle), [@JCQuintas](https://github.com/JCQuintas), [@mapache-salvaje](https://github.com/mapache-salvaje), [@siriwatknp](https://github.com/siriwatknp) ##### Data Grid ##### `@mui/x-data-grid@8.24.0` - \[l10n] Improve Danish (da-DK) locale ([#20828](mui/mui-x#20828)) [@anders-noerrelykke](https://github.com/anders-noerrelykke) - \[l10n] Improve Japanese (ja-JP) locale ([#20251](mui/mui-x#20251)) [@yuito-it](https://github.com/yuito-it) ##### `@mui/x-data-grid-pro@8.24.0` [![pro](https://mui.com/r/x-pro-svg)](https://mui.com/r/x-pro-svg-link "Pro plan") Same changes as in `@mui/x-data-grid@8.24.0`, plus: - \[DataGridPro] Fix header filter height for `density="compact"` ([#20834](mui/mui-x#20834)) [@arminmeh](https://github.com/arminmeh) ##### `@mui/x-data-grid-premium@8.24.0` [![premium](https://mui.com/r/x-premium-svg)](https://mui.com/r/x-premium-svg-link "Premium plan") Same changes as in `@mui/x-data-grid-pro@8.24.0`. ##### Date and Time Pickers ##### `@mui/x-date-pickers@8.24.0` - \[pickers] Fix Styles applied to PickersDay when MuiPickersDay-dayOutsideMonth is used ([#20719](mui/mui-x#20719)) [@sai6855](https://github.com/sai6855) ##### `@mui/x-date-pickers-pro@8.24.0` [![pro](https://mui.com/r/x-pro-svg)](https://mui.com/r/x-pro-svg-link "Pro plan") Same changes as in `@mui/x-date-pickers@8.24.0`. ##### Charts ##### `@mui/x-charts@8.24.0` - \[charts] Add `VisibilityManager` logic to allow managing series/items ([#20571](mui/mui-x#20571)) [@JCQuintas](https://github.com/JCQuintas) - \[charts] Add `identifierSerializer` configuration ([#20775](mui/mui-x#20775)) [@JCQuintas](https://github.com/JCQuintas) - \[charts] Add `serializeIdentifier` instance function ([#20791](mui/mui-x#20791)) [@JCQuintas](https://github.com/JCQuintas) - \[charts] Add bar batch renderer ([#20457](mui/mui-x#20457)) [@bernardobelchior](https://github.com/bernardobelchior) - \[charts] Allow animating bar, line, and pie elements to hidden state ([#20798](mui/mui-x#20798)) [@JCQuintas](https://github.com/JCQuintas) - \[charts] Fix failing lint step ([#20813](mui/mui-x#20813)) [@bernardobelchior](https://github.com/bernardobelchior) - \[charts] Fix tooltip anchored to item ([#20783](mui/mui-x#20783)) [@alexfauquette](https://github.com/alexfauquette) - \[charts] Fix type casting in getCategoryAxisConfig and applySeriesLayout functions ([#20797](mui/mui-x#20797)) [@sai6855](https://github.com/sai6855) - \[charts] Let keyboard navigation avoid overflow and handle nullish values ([#20757](mui/mui-x#20757)) [@alexfauquette](https://github.com/alexfauquette) - \[charts] Refactor `PieChart` and `PieChartPro` to use `slots` and `slotProps` directly ([#20795](mui/mui-x#20795)) [@sai6855](https://github.com/sai6855) - \[charts] Refactor `useRegisterPointerEventHandlers` ([#20824](mui/mui-x#20824)) [@bernardobelchior](https://github.com/bernardobelchior) - \[charts] Update legend types to allow hiding/showing items ([#20784](mui/mui-x#20784)) [@JCQuintas](https://github.com/JCQuintas) ##### `@mui/x-charts-pro@8.24.0` [![pro](https://mui.com/r/x-pro-svg)](https://mui.com/r/x-pro-svg-link "Pro plan") Same changes as in `@mui/x-charts@8.24.0`, plus: - \[charts-pro] Pass `slotProps.toolbar` to `Toolbar` in `PieChartPro` ([#20796](mui/mui-x#20796)) [@sai6855](https://github.com/sai6855) ##### `@mui/x-charts-premium@8.24.0` [![premium](https://mui.com/r/x-premium-svg)](https://mui.com/r/x-premium-svg-link "Premium plan") Same changes as in `@mui/x-charts-pro@8.24.0`, plus: - \[charts-premium] Add range bar chart ([#20275](mui/mui-x#20275)) [@bernardobelchior](https://github.com/bernardobelchior) ##### Tree View ##### `@mui/x-tree-view@8.24.0` - \[tree view] Introduce a Tree View Store to clean the internals ([#20051](mui/mui-x#20051)) [@flaviendelangle](https://github.com/flaviendelangle) ##### `@mui/x-tree-view-pro@8.24.0` [![pro](https://mui.com/r/x-pro-svg)](https://mui.com/r/x-pro-svg-link "Pro plan") Same changes as in `@mui/x-tree-view@8.24.0`. ##### Codemod ##### `@mui/x-codemod@8.24.0` Internal changes. ##### Docs - \[docs] Fix axis size default values ([#20799](mui/mui-x#20799)) [@bernardobelchior](https://github.com/bernardobelchior) - \[docs] Update What's New in MUI X page with post v8 features (DX-118) ([#20787](mui/mui-x#20787)) [@alelthomas](https://github.com/alelthomas) - \[docs] Fix `onAccept`'s `context.source` documentation to use 'view' instead of 'picker' ([#20465](mui/mui-x#20465)) [@auloin](https://github.com/auloin) - \[docs] Revise the Charts Brush doc ([#20792](mui/mui-x#20792)) [@mapache-salvaje](https://github.com/mapache-salvaje) - \[docs] Revise the Charts Highlighting doc ([#20788](mui/mui-x#20788)) [@mapache-salvaje](https://github.com/mapache-salvaje) - \[docs] Revise the Charts Label doc ([#20794](mui/mui-x#20794)) [@mapache-salvaje](https://github.com/mapache-salvaje) - \[docs] Revise the Charts Export doc ([#20779](mui/mui-x#20779)) [@mapache-salvaje](https://github.com/mapache-salvaje) ##### Core - \[code-infra] Fix v8.23.0 release date ([#20767](mui/mui-x#20767)) [@bernardobelchior](https://github.com/bernardobelchior) - \[code-infra] Remove `glob-gitignore` ([#20801](mui/mui-x#20801)) [@bernardobelchior](https://github.com/bernardobelchior) - \[code-infra] Remove `nyc` ([#20804](mui/mui-x#20804)) [@bernardobelchior](https://github.com/bernardobelchior) - \[code-infra] Remove `stream-browserify` and `null-loader` ([#20805](mui/mui-x#20805)) [@bernardobelchior](https://github.com/bernardobelchior) - \[code-infra] Remove `stylelint-config-tailwindcss` ([#20807](mui/mui-x#20807)) [@bernardobelchior](https://github.com/bernardobelchior) - \[code-infra] Remove unused `path` package ([#20802](mui/mui-x#20802)) [@bernardobelchior](https://github.com/bernardobelchior) - \[code-infra] Retry flaky e2e test on webkit ([#20806](mui/mui-x#20806)) [@JCQuintas](https://github.com/JCQuintas) - \[internal] Add `internal` slot to properly generate components CSS layer ([#20763](mui/mui-x#20763)) [@siriwatknp](https://github.com/siriwatknp) </details> <details> <summary>OpenAPITools/openapi-generator-cli (@openapitools/openapi-generator-cli)</summary> ### [`v2.27.0`](https://github.com/OpenAPITools/openapi-generator-cli/releases/tag/v2.27.0) [Compare Source](OpenAPITools/openapi-generator-cli@v2.26.0...v2.27.0) ##### Features - **config:** add support for environment variable placeholders in config ([#1031](OpenAPITools/openapi-generator-cli#1031)) ([1cd2614](OpenAPITools/openapi-generator-cli@1cd2614)) </details> <details> <summary>typescript-eslint/typescript-eslint (@typescript-eslint/eslint-plugin)</summary> ### [`v8.53.0`](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8530-2026-01-12) [Compare Source](typescript-eslint/typescript-eslint@v8.52.0...v8.53.0) ##### 🚀 Features - **eslint-plugin:** add rule \[strict-void-return] ([#9707](typescript-eslint/typescript-eslint#9707)) - **eslint-plugin:** \[no-unused-vars] add a fixer to remove unused imports ([#11922](typescript-eslint/typescript-eslint#11922)) ##### 🩹 Fixes - **eslint-plugin:** \[no-useless-default-assignment] fix false positive for parameters corresponding to a rest parameter ([#11916](typescript-eslint/typescript-eslint#11916)) - **eslint-plugin:** replace unclear "`error` typed" with more helpful description ([#11704](typescript-eslint/typescript-eslint#11704)) - **typescript-estree:** forbid invalid `extends` and `implements` in interface declaration ([#11935](typescript-eslint/typescript-eslint#11935)) - **typescript-estree:** forbid invalid class implements ([#11934](typescript-eslint/typescript-eslint#11934)) - **typescript-estree:** forbid type-only import with both default and named specifiers ([#11930](typescript-eslint/typescript-eslint#11930)) ##### ❤️ Thank You - Brad Zacher [@bradzacher](https://github.com/bradzacher) - fisker Cheung [@fisker](https://github.com/fisker) - Josh Goldberg - Josh Goldberg ✨ - Kirk Waiblinger - Niki [@phaux](https://github.com/phaux) - Nikita - SungHyun627 [@SungHyun627](https://github.com/SungHyun627) - Will Harney [@wjhsf](https://github.com/wjhsf) You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ### [`v8.52.0`](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8520-2026-01-05) [Compare Source](typescript-eslint/typescript-eslint@v8.51.0...v8.52.0) ##### 🚀 Features - **eslint-plugin-internal:** \[no-multiple-lines-of-errors] add rule ([#11899](typescript-eslint/typescript-eslint#11899)) ##### 🩹 Fixes - **eslint-plugin:** \[no-base-to-string] detect @[@toPrimitive](https://github.com/toPrimitive) and valueOf ([#11901](typescript-eslint/typescript-eslint#11901)) - **eslint-plugin:** \[no-useless-default-assignment] handle conditional initializer ([#11908](typescript-eslint/typescript-eslint#11908)) ##### ❤️ Thank You - Josh Goldberg ✨ - Ulrich Stark You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. </details> <details> <summary>typescript-eslint/typescript-eslint (@typescript-eslint/parser)</summary> ### [`v8.53.0`](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/parser/CHANGELOG.md#8530-2026-01-12) [Compare Source](typescript-eslint/typescript-eslint@v8.52.0...v8.53.0) This was a version bump only for parser to align it with other projects, there were no code changes. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ### [`v8.52.0`](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/parser/CHANGELOG.md#8520-2026-01-05) [Compare Source](typescript-eslint/typescript-eslint@v8.51.0...v8.52.0) This was a version bump only for parser to align it with other projects, there were no code changes. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. </details> <details> <summary>remix-run/react-router (react-router-dom)</summary> ### [`v7.12.0`](https://github.com/remix-run/react-router/blob/HEAD/packages/react-router-dom/CHANGELOG.md#7120) [Compare Source](https://github.com/remix-run/react-router/compare/react-router-dom@7.11.0...react-router-dom@7.12.0) ##### Patch Changes - Updated dependencies: - `react-router@7.12.0` </details> --- - [ ] If you want to rebase/retry this MR, check this box --- This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).  See merge request swiss-armed-forces/cyber-command/cea/loom!243 Co-authored-by: Loom MR Pipeline Trigger <group_103951964_bot_9504bb8dead6d4e406ad817a607f24be@noreply.gitlab.com> Co-authored-by: open-source Pipeline <group_90701827_bot_ed04ae348bc5f40af9966fb8b6867e99@noreply.gitlab.com>

fix(eslint-plugin): [no-useless-default-assignment] handle conditiona…

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…l initializer

JoshuaKGoldberg previously approved these changes Dec 31, 2025

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packages/eslint-plugin/tests/rules/no-useless-default-assignment.test.ts Show resolved Hide resolved

add valid test for nested ternary

1a56206

ulrichstark dismissed JoshuaKGoldberg’s stale review via 1a56206 January 1, 2026 15:37

JoshuaKGoldberg approved these changes Jan 1, 2026

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JoshuaKGoldberg added the 1 approval >=1 team member has approved this PR; we're now leaving it open for more reviews before we merge label Jan 1, 2026

bradzacher approved these changes Jan 5, 2026

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bradzacher merged commit cf79108 into typescript-eslint:main Jan 5, 2026
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ulrichstark deleted the fix(eslint-plugin)---no-useless-default-assignment]-handle-conditional-initializer branch January 5, 2026 06:07

chrisbbreuer mentioned this pull request Jan 3, 2026

chore(deps): update all non-major dependencies stacksjs/eslint-plugin#67

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kirkwaiblinger mentioned this pull request Jan 20, 2026

Bug: [no-useless-default-assignment] should report unnecessary default when field is present in both sides of ternary #11980

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ArnaudBarre added a commit to ArnaudBarre/tsl that referenced this pull request Feb 1, 2026

Port typescript-eslint/typescript-eslint#11908

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fix(eslint-plugin): [no-useless-default-assignment] handle conditional initializer#11908

fix(eslint-plugin): [no-useless-default-assignment] handle conditional initializer#11908
bradzacher merged 2 commits intotypescript-eslint:mainfrom
ulrichstark:fix(eslint-plugin)---no-useless-default-assignment]-handle-conditional-initializer

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