/
rollup.config.mjs
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/
rollup.config.mjs
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/* eslint-disable no-console */
/* eslint-env node */
import { createRequire } from 'module';
import babel from '@rollup/plugin-babel';
import resolve from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import terser from '@rollup/plugin-terser';
import sourceMaps from 'rollup-plugin-sourcemaps';
import injectProcessEnv from 'rollup-plugin-inject-process-env';
import serve from 'rollup-plugin-serve';
import livereload from 'rollup-plugin-livereload';
const require = createRequire(import.meta.url);
const pkg = require('./package.json');
// REQUIRED: process.env.BUILD_ENV: "esm" | "cjs" | "umd"
const terserOptions = {
output: {
comments(node, comment) {
const text = comment.value;
const type = comment.type;
if (type === 'comment2') {
// multiline comment: keep if it starts with a bang or contains
// some common preservation keywords
return (
text.indexOf('!') === 0 || /@preserve|@license|@cc_on/i.test(text)
);
}
},
},
};
const commonPlugins = [
resolve(),
commonjs({
include: 'node_modules/**',
}),
babel({
exclude: 'node_modules/**',
babelHelpers: 'bundled',
}),
sourceMaps(),
];
const banner = `/*!
* ${pkg.name} ${pkg.version}
* @license ${pkg.license}, ${pkg.homepage.replace(
'#readme',
'/blob/master/LICENSE'
)}
*/`;
const commonConfig = {
input: './index.js',
};
const commonOutput = {
preserveModules: false, // NOTE: must be false to 'roll-up' all code into one file
sourcemap: true,
banner,
};
const libName = 'focus-trap';
const cjs = [
// NOTE: non-minified does NOT bundle dependencies
{
...commonConfig,
external: ['tabbable'],
output: {
file: `dist/${libName}.js`,
format: 'cjs',
...commonOutput,
},
plugins: commonPlugins,
},
{
...commonConfig,
external: ['tabbable'],
output: {
file: `dist/${libName}.min.js`,
format: 'cjs',
...commonOutput,
},
plugins: [...commonPlugins, terser(terserOptions)],
},
];
const esm = [
// NOTE: non-minified does NOT bundle dependencies
{
...commonConfig,
external: ['tabbable'],
output: {
file: `dist/${libName}.esm.js`,
format: 'esm',
...commonOutput,
},
plugins: commonPlugins,
},
{
...commonConfig,
external: ['tabbable'],
output: {
file: `dist/${libName}.esm.min.js`,
format: 'esm',
...commonOutput,
},
plugins: [...commonPlugins, terser(terserOptions)],
},
];
const umd = [
// NOTE: non-minified does NOT bundle dependencies
{
...commonConfig,
external: ['tabbable'],
output: {
file: `dist/${libName}.umd.js`,
format: 'umd',
noConflict: true,
name: 'focusTrap',
...commonOutput,
globals: {
tabbable: 'tabbable',
},
},
plugins: commonPlugins,
},
{
...commonConfig,
external: ['tabbable'],
output: {
file: `dist/${libName}.umd.min.js`,
format: 'umd',
noConflict: true,
name: 'focusTrap',
...commonOutput,
globals: {
tabbable: 'tabbable',
},
},
plugins: [...commonPlugins, terser(terserOptions)],
},
];
const isDevServer = process.env.SERVE === 'true';
const isLiveReload = process.env.RELOAD === 'true';
const isCypressRun =
isDevServer && !isLiveReload && !!process.env.IS_CYPRESS_ENV;
const demoBanner = `/*!
* ${pkg.name} demo bundle${isCypressRun ? ' (cypress)' : ''}
*/`;
const demo = {
input: './docs/js/index.js',
output: {
name: 'focusTrapDemoBundle',
preserveModules: false,
file: `docs/demo-bundle${isCypressRun ? '-cypress' : ''}.js`,
format: 'iife', // immediately-invoked function expression — suitable for <script> tags
sourcemap: true,
banner: demoBanner,
},
plugins: [
resolve(),
commonjs(),
injectProcessEnv({
BUILD_ENV: process.env.BUILD_ENV,
IS_CYPRESS_ENV: process.env.IS_CYPRESS_ENV,
}),
babel({ babelHelpers: 'bundled' }),
isDevServer &&
serve({
port: 9966,
contentBase: 'docs',
openPage: `/index.html${isCypressRun ? '?bundle=cypress' : ''}`,
}), // index.html should be in root of project
isLiveReload && livereload({ port: 9966, watch: 'docs' }),
],
};
let config = [];
console.log('Building for env', process.env.BUILD_ENV);
switch (process.env.BUILD_ENV) {
case 'demo':
config = demo;
break;
case 'cjs':
config = cjs;
break;
case 'esm':
config = esm;
break;
case 'umd':
config = umd;
break;
default:
throw Error(
'You must define process.env.BUILD_ENV before building with rollup. Check rollup.config.js for valid options.'
);
}
export default config;