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rollup.config.js
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rollup.config.js
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import babelPlugin from 'rollup-plugin-babel'
import replacePlugin from 'rollup-plugin-replace'
import pkg from "./package.json";
const externalPackages = [
...Object.keys(pkg.peerDependencies || {}),
...Object.keys(pkg.dependencies || {}),
];
const makeExternalPredicate = externalArr => {
if (externalArr.length === 0) {
return () => false;
}
const pattern = new RegExp(`^(${externalArr.join("|")})($|/)`);
return id => pattern.test(id);
}
const babel = babelPlugin({ runtimeHelpers: true })
// todo: dead code elimination is not quite working, devLog still in production bundle
const replace = replacePlugin({
__PRODUCTION__: JSON.stringify(process.env.NODE_ENV === 'production')
})
const external = makeExternalPredicate(externalPackages)
export default [
// CommonJS
{
input: 'src/index.js',
output: { file: 'lib/scroll-animation-engine.js', format: 'cjs', indent: false },
external,
plugins: [replace, babel]
},
// ES
{
input: 'src/index.js',
output: { file: 'es/scroll-animation-engine.js', format: 'es', indent: false },
external,
plugins: [replace, babel]
}
// todo: maybe include UMD build
]