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rollup.config.js
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rollup.config.js
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/* eslint-disable import/no-extraneous-dependencies */
import path from 'path'
import babel from 'rollup-plugin-babel'
import resolve from 'rollup-plugin-node-resolve'
import commonjs from 'rollup-plugin-commonjs'
import replace from 'rollup-plugin-replace'
import { uglify } from 'rollup-plugin-uglify'
import pkg from './package.json'
const root = process.platform === 'win32' ? path.resolve('/') : '/'
const external = id => !id.startsWith('.') && !id.startsWith(root)
const extensions = ['.js', '.jsx', '.ts', '.tsx']
const globals = {
react: 'React',
}
const getBabelOptions = ({ useESModules }) => ({
exclude: '**/node_modules/**',
runtimeHelpers: true,
extensions,
include: ['src/**/*'],
presets: ['@babel/preset-typescript'],
plugins: [['@babel/transform-runtime', { regenerator: false, useESModules }]],
})
export default [
pkg.module
? {
input: './src/index.tsx',
output: { file: pkg.module, format: 'esm', exports: 'named' },
external,
plugins: [
resolve({ extensions }),
babel(getBabelOptions({ useESModules: true })),
],
}
: null,
pkg.main
? {
input: './src/index.tsx',
output: { file: pkg.main, format: 'cjs', exports: 'named' },
external,
plugins: [
resolve({ extensions }),
babel(getBabelOptions({ useESModules: false })),
],
}
: null,
pkg.unpkg
? {
input: './src/index.tsx',
output: {
file: pkg.unpkg,
format: 'umd',
name: 'ReactIntersectionObserver',
globals,
exports: 'named',
},
external: Object.keys(globals),
plugins: [
resolve({ extensions }),
replace({ 'process.env.NODE_ENV': JSON.stringify('production') }),
babel(getBabelOptions({ useESModules: true })),
commonjs({ include: '**/node_modules/**' }),
uglify(),
],
}
: null,
].filter(Boolean)