fix(eslint-plugin): [no-unnecessary-type-assertion] wrap object literal in parens when removing TSTypeAssertion in arrow body by Deftera186 · Pull Request #12394 · typescript-eslint/typescript-eslint

Deftera186 · 2026-06-01T12:37:39Z

PR Checklist

Addresses an existing open issue: fixes Bug: no-unnecessary-type-assertion autofix introduces syntax error for ObjectExpression in TSTypeAssertion in ArrowFunctionExpression #12393
That issue was marked as accepting prs
Steps in Contributing were taken

Overview

The single-assertion autofixer for no-unnecessary-type-assertion removed an angle-bracket assertion (<T>expr) by deleting just the <...> tokens. That works fine in most positions, but when the asserted value is an object literal that is the concise body of an arrow function, dropping the brackets turns () => <T>{ ... } into () => { ... }, which the parser reads as a block statement rather than an object literal — so the autofix output is a syntax error (the case from #12393).

The fix detects exactly that shape (object literal expression whose parent is an arrow function and is its body) and replaces the whole assertion with the object literal wrapped in parentheses, producing () => ({ ... }). This reuses the same condition the rule already applies to the double-assertion path a few lines below, so the two fixers now behave consistently.

I only added an invalid test case here: the assertion is still (correctly) flagged as unnecessary, so there is no new valid behavior to cover — the change is purely to the fix output. I confirmed the new test fails on main (the rule tester reports a fatal parsing error in the autofix) and passes with the change.

Disclosure: I used an AI assistant to help locate the relevant code and draft the fix. I reviewed and understand the change, and verified it locally (full rule test suite + lint).

💖

…eAssertion in arrow body The no-unnecessary-type-assertion autofixer removed the angle-bracket type assertion by deleting only the `<...>` tokens. When the asserted expression is an object literal that forms the body of an arrow function (e.g. `() => <T>{ ... }`), this produced `() => { ... }`, which parses as a block statement and is a syntax error. Wrap the object literal in parentheses in that case, mirroring the existing handling for double assertions. Fixes typescript-eslint#12393. Assisted-by: Claude (Anthropic AI) Signed-off-by: Deftera <55022020+Deftera186@users.noreply.github.com>

typescript-eslint · 2026-06-01T12:37:43Z

Thanks for the PR, @Deftera186!

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 · 2026-06-01T12:37:44Z

✅ Deploy Preview for typescript-eslint ready!

Name	Link
🔨 Latest commit	`0234906`
🔍 Latest deploy log	https://app.netlify.com/projects/typescript-eslint/deploys/6a275aa788659f0008848202
😎 Deploy Preview	https://deploy-preview-12394--typescript-eslint.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.
Lighthouse	1 paths audited Performance: 99 (no change from production) Accessibility: 97 (no change from production) Best Practices: 100 (no change from production) SEO: 90 (no change from production) PWA: 80 (no change from production) View the detailed breakdown and full score reports
🤖 Make changes	Run an agent on this branch

To edit notification comments on pull requests, go to your Netlify project configuration.

nx-cloud · 2026-06-01T12:38:50Z

View your CI Pipeline Execution ↗ for commit 0234906

Command	Status	Duration	Result
`nx run-many -t lint --projects=typescript-estre...`	✅ Succeeded	54s	View ↗
`nx run generate-configs`	✅ Succeeded	7s	View ↗
`nx run-many -t lint --projects=eslint-plugin --...`	✅ Succeeded	52s	View ↗
`nx run-many -t typecheck:tsgo`	✅ Succeeded	47s	View ↗
`nx run-many -t typecheck`	✅ Succeeded	35s	View ↗
`nx run-many -t lint --projects=parser,type-util...`	✅ Succeeded	29s	View ↗
`nx run-many -t lint --projects=ast-spec,utils,s...`	✅ Succeeded	29s	View ↗
`nx run types:build`	✅ Succeeded	1s	View ↗
`Additional runs (12)`	✅ Succeeded	...	View ↗

💡 Verify your cache is correct by running tasks in a sandbox. Read docs ↗

☁️ Nx Cloud last updated this comment at 2026-06-09 00:16:34 UTC

codecov · 2026-06-01T12:43:48Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.69%. Comparing base (5973d5b) to head (0234906).
⚠️ Report is 11 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #12394      +/-   ##
==========================================
+ Coverage   86.99%   94.69%   +7.69%     
==========================================
  Files         513      222     -291     
  Lines       16546    11377    -5169     
  Branches     5165     3788    -1377     
==========================================
- Hits        14394    10773    -3621     
+ Misses       1461      257    -1204     
+ Partials      691      347     -344

Flag	Coverage Δ
unittest	`94.69% <100.00%> (+7.69%)`	⬆️

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-unnecessary-type-assertion.ts	`95.32% <100.00%> (+0.09%)`	⬆️

... and 292 files with indirect coverage changes

🚀 New features to boost your workflow:

❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

kirkwaiblinger

This basically fixes the bug, but let's tighten up some details around preserving comments in the fix. Thanks!

kirkwaiblinger · 2026-06-03T07:30:26Z

            NullThrowsReasons.MissingToken('>', 'type annotation'),
          );
+          if (
+            node.expression.type === AST_NODE_TYPES.ObjectExpression &&


This condition might not be sufficient, actually... A case like this, though unclear why it would exist in real world code, would also suffer from the same problem:

<{ a: string }>{ a: 'foo' };

Right, the bare statement form has the same hazard. Extended the condition to also fire when node.parent.type === ExpressionStatement and added <{ a: string }>{ a: 'foo' }; as a test.

There's a slightly broader class I didn't tackle here: when the assertion sits at the left edge of a larger expression statement, e.g. <T>{ a: 1 }.x; or <T>{ a: 1 } + 1;, the resulting { still leads the statement. Catching that properly would mean walking up through left-edge parents (member, binary, logical, conditional test, sequence head, call/new callee, tagged template tag). Happy to expand into that walk in this PR if you'd prefer it covered here, or leave it for a follow-up since it's a narrower class than the originally reported bug.

Oh, interesting! Let's not worry about handling that complexity, but I appreciate you looking into it!

Thanks!

kirkwaiblinger · 2026-06-03T07:42:04Z

            NullThrowsReasons.MissingToken('>', 'type annotation'),
          );
+          if (
+            node.expression.type === AST_NODE_TYPES.ObjectExpression &&


(optional) could consider exporting and reusing the helper function isObjectExpressionInOneLineReturn() from the getWrappingFixer() logic?

Held off on it for now because the inline check also needs to fire on the ExpressionStatement case from your other comment, and isObjectExpressionInOneLineReturn only covers the arrow-body branch. Would you prefer I widen that helper (rename it to something like needsParensWhenUnwrapped and add the statement-level branch) and import it from getWrappingFixer, or keep the predicate inline here?

I think the two options that make sense to me are:

Keep it exactly as is

(maybe slightly preferred?) Just import isObjectExpressionInOneLineReturn and don't bother dealing with the ExpressionStatement edge case at all in no-unnecessary-type-assertion (especially in light of https://github.com/typescript-eslint/typescript-eslint/pull/12394/changes#r3347832383, in which you noted that checking whether the parent is an ExpressionStatement isn't even actually sufficient for that class of problem)

Choice is yours!

I honestly think partial coverage is still better than zero coverage here, so I'll keep it as-is. I filed #12418 to track the broader left-edge case so someone can tackle it whenever.

…el case Address review feedback on typescript-eslint#12394: - Replace the dedicated arrow-body branch (which used `replaceText` over the whole node) with a unified `needsParens` flag that adds parens via `insertTextBefore`/`insertTextAfter` around the existing angle-bracket removal. This preserves comments that sit between the closing `>` and the object literal. - Extend the wrapping condition to also cover ObjectExpression at the start of an ExpressionStatement (e.g. `<T>{ a: 'foo' };`), which otherwise rewrites to `{ a: 'foo' };` and parses as a block. - Skip wrapping when the assertion or its inner expression is already parenthesized, so `(<T>{...})` and `<T>({...})` don't gain a second set of parens. Adds tests for comment preservation, the already-parenthesized cases, and the statement-level case. Assisted-by: Claude (Anthropic AI) Signed-off-by: Deftera <55022020+Deftera186@users.noreply.github.com>

kirkwaiblinger · 2026-06-09T00:19:47Z

            NullThrowsReasons.MissingToken('>', 'type annotation'),
          );
+          if (
+            node.expression.type === AST_NODE_TYPES.ObjectExpression &&


Oh, interesting! Let's not worry about handling that complexity, but I appreciate you looking into it!

Thanks!

kirkwaiblinger · 2026-06-09T00:22:56Z

            NullThrowsReasons.MissingToken('>', 'type annotation'),
          );
+          if (
+            node.expression.type === AST_NODE_TYPES.ObjectExpression &&


I think the two options that make sense to me are:

Keep it exactly as is

(maybe slightly preferred?) Just import isObjectExpressionInOneLineReturn and don't bother dealing with the ExpressionStatement edge case at all in no-unnecessary-type-assertion (especially in light of https://github.com/typescript-eslint/typescript-eslint/pull/12394/changes#r3347832383, in which you noted that checking whether the parent is an ExpressionStatement isn't even actually sufficient for that class of problem)

Choice is yours!

kirkwaiblinger

Looks good to me to merge as is! If you want to make any changes along the lines of https://github.com/typescript-eslint/typescript-eslint/pull/12394/changes#r3377104255 feel free to do so but completely up to you.

Thanks!

JoshuaKGoldberg · 2026-06-15T16:24:28Z

(merging now to get this in with the release today)

@anasm266

| datasource | package | from | to | | ---------- | -------------------------------- | ------ | ------ | | npm | @typescript-eslint/eslint-plugin | 8.61.0 | 8.61.1 | | npm | @typescript-eslint/parser | 8.61.0 | 8.61.1 | ## [v8.61.1](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8611-2026-06-15) ##### 🩹 Fixes - **eslint-plugin:** \[no-unnecessary-template-expression] respect ECMAScript line terminators ([#12388](typescript-eslint/typescript-eslint#12388)) - **eslint-plugin:** \[no-unnecessary-boolean-literal-compare] fix precedence bug in autofix ([#12413](typescript-eslint/typescript-eslint#12413)) - **eslint-plugin:** \[no-unnecessary-type-assertion] wrap object literal in parens when removing TSTypeAssertion in arrow body ([#12394](typescript-eslint/typescript-eslint#12394), [#12393](typescript-eslint/typescript-eslint#12393)) - **eslint-plugin:** \[no-unnecessary-type-assertion] avoid false positive for template literal expressions ([#12281](typescript-eslint/typescript-eslint#12281)) - **eslint-plugin:** \[consistent-indexed-object-style] do not remove comments when fixing ([#12396](typescript-eslint/typescript-eslint#12396), [#10577](typescript-eslint/typescript-eslint#10577)) ##### ❤️ Thank You - Anas [@anasm266](https://github.com/anasm266) - Deftera [@Deftera186](https://github.com/Deftera186) - Kirk Waiblinger [@kirkwaiblinger](https://github.com/kirkwaiblinger) - lumir - Sarath Francis [@sarathfrancis90](https://github.com/sarathfrancis90) See [GitHub Releases](https://github.com/typescript-eslint/typescript-eslint/releases/tag/v8.61.1) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website.

@kirkwaiblinger

| datasource | package | from | to | | ---------- | -------------------------------- | ------ | ------ | | npm | @typescript-eslint/eslint-plugin | 8.61.0 | 8.62.0 | | npm | @typescript-eslint/parser | 8.61.0 | 8.62.0 | ## [v8.62.0](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8620-2026-06-22) ##### 🚀 Features - remove redundant package.json "files" ([#12444](typescript-eslint/typescript-eslint#12444)) ##### ❤️ Thank You - Kirk Waiblinger [@kirkwaiblinger](https://github.com/kirkwaiblinger) See [GitHub Releases](https://github.com/typescript-eslint/typescript-eslint/releases/tag/v8.62.0) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ## [v8.61.1](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8611-2026-06-15) ##### 🩹 Fixes - **eslint-plugin:** \[no-unnecessary-template-expression] respect ECMAScript line terminators ([#12388](typescript-eslint/typescript-eslint#12388)) - **eslint-plugin:** \[no-unnecessary-boolean-literal-compare] fix precedence bug in autofix ([#12413](typescript-eslint/typescript-eslint#12413)) - **eslint-plugin:** \[no-unnecessary-type-assertion] wrap object literal in parens when removing TSTypeAssertion in arrow body ([#12394](typescript-eslint/typescript-eslint#12394), [#12393](typescript-eslint/typescript-eslint#12393)) - **eslint-plugin:** \[no-unnecessary-type-assertion] avoid false positive for template literal expressions ([#12281](typescript-eslint/typescript-eslint#12281)) - **eslint-plugin:** \[consistent-indexed-object-style] do not remove comments when fixing ([#12396](typescript-eslint/typescript-eslint#12396), [#10577](typescript-eslint/typescript-eslint#10577)) ##### ❤️ Thank You - Anas [@anasm266](https://github.com/anasm266) - Deftera [@Deftera186](https://github.com/Deftera186) - Kirk Waiblinger [@kirkwaiblinger](https://github.com/kirkwaiblinger) - lumir - Sarath Francis [@sarathfrancis90](https://github.com/sarathfrancis90) See [GitHub Releases](https://github.com/typescript-eslint/typescript-eslint/releases/tag/v8.61.1) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website.

@kirkwaiblinger

| datasource | package | from | to | | ---------- | -------------------------------- | ------ | ------ | | npm | @typescript-eslint/eslint-plugin | 8.61.0 | 8.62.0 | | npm | @typescript-eslint/parser | 8.61.0 | 8.62.0 | ## [v8.62.0](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8620-2026-06-22) ##### 🚀 Features - remove redundant package.json "files" ([#12444](typescript-eslint/typescript-eslint#12444)) ##### ❤️ Thank You - Kirk Waiblinger [@kirkwaiblinger](https://github.com/kirkwaiblinger) See [GitHub Releases](https://github.com/typescript-eslint/typescript-eslint/releases/tag/v8.62.0) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ## [v8.61.1](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8611-2026-06-15) ##### 🩹 Fixes - **eslint-plugin:** \[no-unnecessary-template-expression] respect ECMAScript line terminators ([#12388](typescript-eslint/typescript-eslint#12388)) - **eslint-plugin:** \[no-unnecessary-boolean-literal-compare] fix precedence bug in autofix ([#12413](typescript-eslint/typescript-eslint#12413)) - **eslint-plugin:** \[no-unnecessary-type-assertion] wrap object literal in parens when removing TSTypeAssertion in arrow body ([#12394](typescript-eslint/typescript-eslint#12394), [#12393](typescript-eslint/typescript-eslint#12393)) - **eslint-plugin:** \[no-unnecessary-type-assertion] avoid false positive for template literal expressions ([#12281](typescript-eslint/typescript-eslint#12281)) - **eslint-plugin:** \[consistent-indexed-object-style] do not remove comments when fixing ([#12396](typescript-eslint/typescript-eslint#12396), [#10577](typescript-eslint/typescript-eslint#10577)) ##### ❤️ Thank You - Anas [@anasm266](https://github.com/anasm266) - Deftera [@Deftera186](https://github.com/Deftera186) - Kirk Waiblinger [@kirkwaiblinger](https://github.com/kirkwaiblinger) - lumir - Sarath Francis [@sarathfrancis90](https://github.com/sarathfrancis90) See [GitHub Releases](https://github.com/typescript-eslint/typescript-eslint/releases/tag/v8.61.1) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website.

@kirkwaiblinger

| datasource | package | from | to | | ---------- | -------------------------------- | ------ | ------ | | npm | @typescript-eslint/eslint-plugin | 8.61.0 | 8.62.0 | | npm | @typescript-eslint/parser | 8.61.0 | 8.62.0 | ## [v8.62.0](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8620-2026-06-22) ##### 🚀 Features - remove redundant package.json "files" ([#12444](typescript-eslint/typescript-eslint#12444)) ##### ❤️ Thank You - Kirk Waiblinger [@kirkwaiblinger](https://github.com/kirkwaiblinger) See [GitHub Releases](https://github.com/typescript-eslint/typescript-eslint/releases/tag/v8.62.0) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ## [v8.61.1](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8611-2026-06-15) ##### 🩹 Fixes - **eslint-plugin:** \[no-unnecessary-template-expression] respect ECMAScript line terminators ([#12388](typescript-eslint/typescript-eslint#12388)) - **eslint-plugin:** \[no-unnecessary-boolean-literal-compare] fix precedence bug in autofix ([#12413](typescript-eslint/typescript-eslint#12413)) - **eslint-plugin:** \[no-unnecessary-type-assertion] wrap object literal in parens when removing TSTypeAssertion in arrow body ([#12394](typescript-eslint/typescript-eslint#12394), [#12393](typescript-eslint/typescript-eslint#12393)) - **eslint-plugin:** \[no-unnecessary-type-assertion] avoid false positive for template literal expressions ([#12281](typescript-eslint/typescript-eslint#12281)) - **eslint-plugin:** \[consistent-indexed-object-style] do not remove comments when fixing ([#12396](typescript-eslint/typescript-eslint#12396), [#10577](typescript-eslint/typescript-eslint#10577)) ##### ❤️ Thank You - Anas [@anasm266](https://github.com/anasm266) - Deftera [@Deftera186](https://github.com/Deftera186) - Kirk Waiblinger [@kirkwaiblinger](https://github.com/kirkwaiblinger) - lumir - Sarath Francis [@sarathfrancis90](https://github.com/sarathfrancis90) See [GitHub Releases](https://github.com/typescript-eslint/typescript-eslint/releases/tag/v8.61.1) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website.

@kirkwaiblinger

| datasource | package | from | to | | ---------- | -------------------------------- | ------ | ------ | | npm | @typescript-eslint/eslint-plugin | 8.61.0 | 8.62.1 | | npm | @typescript-eslint/parser | 8.61.0 | 8.62.1 | ## [v8.62.1](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8621-2026-06-29) ##### 🩹 Fixes - **eslint-plugin:** \[no-unnecessary-type-assertion] parenthesize object literal at left edge of expression statement ([#12443](typescript-eslint/typescript-eslint#12443), [#12418](typescript-eslint/typescript-eslint#12418)) - **eslint-plugin:** \[no-unnecessary-boolean-literal-compare] preserve boolean result in fixer for nullable true comparisons ([#12365](typescript-eslint/typescript-eslint#12365)) - **eslint-plugin:** \[prefer-optional-chain] use suggestion instead of autofix for trailing binary operator ([#12328](typescript-eslint/typescript-eslint#12328)) ##### ❤️ Thank You - Kirk Waiblinger [@kirkwaiblinger](https://github.com/kirkwaiblinger) - mdm317 - Patrick Aleite - 송재욱 See [GitHub Releases](https://github.com/typescript-eslint/typescript-eslint/releases/tag/v8.62.1) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ## [v8.62.0](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8620-2026-06-22) ##### 🚀 Features - remove redundant package.json "files" ([#12444](typescript-eslint/typescript-eslint#12444)) ##### ❤️ Thank You - Kirk Waiblinger [@kirkwaiblinger](https://github.com/kirkwaiblinger) See [GitHub Releases](https://github.com/typescript-eslint/typescript-eslint/releases/tag/v8.62.0) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ## [v8.61.1](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8611-2026-06-15) ##### 🩹 Fixes - **eslint-plugin:** \[no-unnecessary-template-expression] respect ECMAScript line terminators ([#12388](typescript-eslint/typescript-eslint#12388)) - **eslint-plugin:** \[no-unnecessary-boolean-literal-compare] fix precedence bug in autofix ([#12413](typescript-eslint/typescript-eslint#12413)) - **eslint-plugin:** \[no-unnecessary-type-assertion] wrap object literal in parens when removing TSTypeAssertion in arrow body ([#12394](typescript-eslint/typescript-eslint#12394), [#12393](typescript-eslint/typescript-eslint#12393)) - **eslint-plugin:** \[no-unnecessary-type-assertion] avoid false positive for template literal expressions ([#12281](typescript-eslint/typescript-eslint#12281)) - **eslint-plugin:** \[consistent-indexed-object-style] do not remove comments when fixing ([#12396](typescript-eslint/typescript-eslint#12396), [#10577](typescript-eslint/typescript-eslint#10577)) ##### ❤️ Thank You - Anas [@anasm266](https://github.com/anasm266) - Deftera [@Deftera186](https://github.com/Deftera186) - Kirk Waiblinger [@kirkwaiblinger](https://github.com/kirkwaiblinger) - lumir - Sarath Francis [@sarathfrancis90](https://github.com/sarathfrancis90) See [GitHub Releases](https://github.com/typescript-eslint/typescript-eslint/releases/tag/v8.61.1) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website.

@kirkwaiblinger

| datasource | package | from | to | | ---------- | -------------------------------- | ------ | ------ | | npm | @typescript-eslint/eslint-plugin | 8.61.0 | 8.62.1 | | npm | @typescript-eslint/parser | 8.61.0 | 8.62.1 | ## [v8.62.1](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8621-2026-06-29) ##### 🩹 Fixes - **eslint-plugin:** \[no-unnecessary-type-assertion] parenthesize object literal at left edge of expression statement ([#12443](typescript-eslint/typescript-eslint#12443), [#12418](typescript-eslint/typescript-eslint#12418)) - **eslint-plugin:** \[no-unnecessary-boolean-literal-compare] preserve boolean result in fixer for nullable true comparisons ([#12365](typescript-eslint/typescript-eslint#12365)) - **eslint-plugin:** \[prefer-optional-chain] use suggestion instead of autofix for trailing binary operator ([#12328](typescript-eslint/typescript-eslint#12328)) ##### ❤️ Thank You - Kirk Waiblinger [@kirkwaiblinger](https://github.com/kirkwaiblinger) - mdm317 - Patrick Aleite - 송재욱 See [GitHub Releases](https://github.com/typescript-eslint/typescript-eslint/releases/tag/v8.62.1) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ## [v8.62.0](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8620-2026-06-22) ##### 🚀 Features - remove redundant package.json "files" ([#12444](typescript-eslint/typescript-eslint#12444)) ##### ❤️ Thank You - Kirk Waiblinger [@kirkwaiblinger](https://github.com/kirkwaiblinger) See [GitHub Releases](https://github.com/typescript-eslint/typescript-eslint/releases/tag/v8.62.0) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ## [v8.61.1](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8611-2026-06-15) ##### 🩹 Fixes - **eslint-plugin:** \[no-unnecessary-template-expression] respect ECMAScript line terminators ([#12388](typescript-eslint/typescript-eslint#12388)) - **eslint-plugin:** \[no-unnecessary-boolean-literal-compare] fix precedence bug in autofix ([#12413](typescript-eslint/typescript-eslint#12413)) - **eslint-plugin:** \[no-unnecessary-type-assertion] wrap object literal in parens when removing TSTypeAssertion in arrow body ([#12394](typescript-eslint/typescript-eslint#12394), [#12393](typescript-eslint/typescript-eslint#12393)) - **eslint-plugin:** \[no-unnecessary-type-assertion] avoid false positive for template literal expressions ([#12281](typescript-eslint/typescript-eslint#12281)) - **eslint-plugin:** \[consistent-indexed-object-style] do not remove comments when fixing ([#12396](typescript-eslint/typescript-eslint#12396), [#10577](typescript-eslint/typescript-eslint#10577)) ##### ❤️ Thank You - Anas [@anasm266](https://github.com/anasm266) - Deftera [@Deftera186](https://github.com/Deftera186) - Kirk Waiblinger [@kirkwaiblinger](https://github.com/kirkwaiblinger) - lumir - Sarath Francis [@sarathfrancis90](https://github.com/sarathfrancis90) See [GitHub Releases](https://github.com/typescript-eslint/typescript-eslint/releases/tag/v8.61.1) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website.

kirkwaiblinger requested changes Jun 3, 2026

View reviewed changes

kirkwaiblinger changed the title ~~fix(eslint-plugin): wrap object literal in parens when removing TSTypeAssertion in arrow body~~ fix(eslint-plugin): [no-unnecessary-type-assertion] wrap object literal in parens when removing TSTypeAssertion in arrow body Jun 9, 2026

remove unnecessary noFormat

0234906

kirkwaiblinger approved these changes Jun 9, 2026

View reviewed changes

kirkwaiblinger added the 1 approval >=1 team member has approved this PR; we're now leaving it open for more reviews before we merge label Jun 9, 2026

Deftera186 mentioned this pull request Jun 9, 2026

Bug: [no-unnecessary-type-assertion] autofix produces invalid code for TSTypeAssertion of ObjectExpression at left edge of an ExpressionStatement #12418

Closed

4 tasks

JoshuaKGoldberg merged commit 1b5d543 into typescript-eslint:main Jun 15, 2026
43 of 44 checks passed

jaudiger mentioned this pull request Jun 16, 2026

Update NPM runtime deps brioche-dev/brioche#479

Merged

MerlijnW70 mentioned this pull request Jun 19, 2026

fix(eslint-plugin): [no-unnecessary-type-assertion] parenthesize object literal at left edge of expression statement #12438

Closed

3 tasks

zaewc mentioned this pull request Jun 22, 2026

fix(eslint-plugin): [no-unnecessary-type-assertion] parenthesize object literal at left edge of expression statement #12443

Merged

3 tasks

Uh oh!

Uh oh!

Conversation

Deftera186 commented Jun 1, 2026

PR Checklist

Overview

Uh oh!

typescript-eslint Bot commented Jun 1, 2026

Uh oh!

netlify Bot commented Jun 1, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

✅ Deploy Preview for typescript-eslint ready!

Uh oh!

nx-cloud Bot commented Jun 1, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

codecov Bot commented Jun 1, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Codecov Report

Uh oh!

kirkwaiblinger left a comment

Choose a reason for hiding this comment

Uh oh!

Uh oh!

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

kirkwaiblinger left a comment

Choose a reason for hiding this comment

Uh oh!

Uh oh!

JoshuaKGoldberg commented Jun 15, 2026

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

netlify Bot commented Jun 1, 2026 •

edited

Loading

nx-cloud Bot commented Jun 1, 2026 •

edited

Loading

codecov Bot commented Jun 1, 2026 •

edited

Loading