feat(react-refresh-loader): generate more compact runtime code#12160
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chenjiahan merged 1 commit intomainfrom Nov 12, 2025
Merged
feat(react-refresh-loader): generate more compact runtime code#12160chenjiahan merged 1 commit intomainfrom
chenjiahan merged 1 commit intomainfrom
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ahabhgk
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Nov 12, 2025
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Pull Request Overview
This PR optimizes the React Refresh loader by generating more compact runtime code. The runtime helpers are now emitted on single lines instead of multiple lines, reducing the overall output size. The code conditionally uses arrow functions when the environment supports them.
- Compacted the React Refresh runtime helper functions from multi-line to single-line format
- Added environment-aware code generation that uses arrow functions when supported
- Maintained backward compatibility for environments that don't support arrow functions
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📦 Binary Size-limit
❌ Size increased by 384bytes from 48.09MB to 48.09MB (⬆️0.00%) |
CodSpeed Performance ReportMerging #12160 will not alter performanceComparing Summary
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Summary
The React Refresh runtime helpers are inserted into every React component, and keeping it compact helps keep the output code clear.
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