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- Remove all Babel dependencies (@babel/cli, @babel/core, @babel/preset-*, etc.) - Add esbuild for builds (~100x faster) - Add tsx for test transpilation - Rename source files to .jsx extension - Update ESLint config to use built-in JSX parsing - Delete .babelrc Build time: ~120ms (was ~500ms with Babel)
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Summary
Replace Babel with esbuild for faster builds and simpler toolchain.
Changes
Removed
@babel/cli@babel/core@babel/preset-env@babel/preset-react@babel/plugin-transform-class-properties@babel/register@babel/eslint-parser.babelrcAdded
esbuild- for production buildstsx- for test transpilationUpdated
src/ReactDocumentEvents.js→.jsxtest/index.spec.js→.jsxPerformance
node_modulessizeTest plan