chore: add sideEffects: false to package.json#217
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Allows bundlers to safely tree-shake mitt, since it has no side effects on import.
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Problem (#210)
mitthas no side effects on import, butpackage.jsondoes not declare"sideEffects": false. This prevents bundlers (webpack, Rollup, esbuild, Vite) from safely tree-shaking unused exports.Fix
Add
"sideEffects": falsetopackage.json.This is the standard field recommended by webpack and other bundlers for libraries that are pure (no global side effects when imported).