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rollup.config.js
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import babel from '@rollup/plugin-babel'
import resolve from '@rollup/plugin-node-resolve'
import pkg from './package.json'
const extensions = ['.ts', '.tsx', '.js', '.jsx']
const vendors = []
// Make all external dependencies to be exclude from rollup
.concat(
Object.keys(pkg.dependencies || {}),
Object.keys(pkg.peerDependencies || {})
)
const makeExternalPredicate = (externalArr) => {
if (externalArr.length === 0) {
return () => false
}
const pattern = new RegExp(`^(${externalArr.join('|')})($|/)`)
return (id) => pattern.test(id)
}
export default ['esm', 'cjs'].map((format) => ({
input: {
index: 'src/index.ts',
routes: 'src/routes/index.ts',
},
output: [
{
dir: 'lib',
entryFileNames: '[name].[format].js',
chunkFileNames: '[name].[format].js',
exports: 'named',
format,
},
],
external: makeExternalPredicate(vendors),
plugins: [
resolve({ extensions }),
babel({
babelHelpers: 'runtime',
exclude: 'node_modules/**',
extensions,
plugins: [
[
'@babel/plugin-transform-runtime',
{
useESModules: format === 'esm',
// NOTE: Sometimes js world is a pain
// see: https://github.com/babel/babel/issues/10261
version: pkg['dependencies']['@babel/runtime'],
},
],
],
}),
],
}))