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feat: Object.assign detection to mutation rules #2929

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@waynzh waynzh commented Sep 5, 2025

resolve #2823

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changeset-bot bot commented Sep 5, 2025

🦋 Changeset detected

Latest commit: 8022e9c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package
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eslint-plugin-vue Minor

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@FloEdelmann FloEdelmann left a comment

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Very nice, thanks!

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Pull Request Overview

This PR enhances the vue/no-mutating-props and vue/no-side-effects-in-computed-properties rules to detect mutations caused by Object.assign() when the target object (first argument) is a prop or reactive data.

Key changes:

  • Added utility function to detect Object.assign calls with specific target nodes
  • Enhanced mutation detection logic to identify Object.assign as a mutation operation
  • Added comprehensive test coverage for both valid and invalid Object.assign usage patterns

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File Description
lib/utils/index.js Added isObjectAssignCall utility function and integrated Object.assign detection into mutation analysis
tests/lib/rules/no-mutating-props.js Added test cases for Object.assign prop mutation detection
tests/lib/rules/no-side-effects-in-computed-properties.js Added test cases for Object.assign side effect detection in computed properties
.changeset/hot-beers-help.md Added changelog entry documenting the enhancement

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const { callee, arguments: args } = callExpr

return (
callExpr.type === 'CallExpression' &&
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Copilot AI Sep 5, 2025

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The type check callExpr.type === 'CallExpression' is redundant since the parameter is already typed as CallExpression in the JSDoc comment. This check can be removed to simplify the logic.

Suggested change
callExpr.type === 'CallExpression' &&

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@FloEdelmann FloEdelmann FloEdelmann approved these changes

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Successfully merging this pull request may close these issues.

vue/no-mutating-props should warn on Object.assign with prop as first argument

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