fix: disable split chunks for umd and iife output format#1378
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Timeless0911 merged 2 commits intomainfrom Dec 4, 2025
Merged
fix: disable split chunks for umd and iife output format#1378Timeless0911 merged 2 commits intomainfrom
Timeless0911 merged 2 commits intomainfrom
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Pull request overview
This PR fixes chunk splitting configuration for UMD and IIFE output formats by completely disabling splitChunks, which is more appropriate given that these formats have asyncChunks disabled.
Key changes:
- Changed UMD format from
splitChunks: { chunks: 'async' }tosplitChunks: false - Added
splitChunks: falseconfiguration to IIFE format (previously not configured) - Updated test snapshots to reflect the new configuration
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| packages/core/src/config.ts | Updated splitChunks configuration for UMD format from { chunks: 'async' } to false, and added splitChunks: false to IIFE format configuration |
| packages/core/tests/snapshots/config.test.ts.snap | Updated test snapshots to reflect the new splitChunks configuration for UMD and IIFE formats across multiple test cases |
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fi3ework
approved these changes
Dec 4, 2025
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Summary
When building libraries in UMD or IIFE format with code splitting enabled, the output generates multiple chunks that can cause runtime issues when consumed by upstream applications.
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