import svelte from 'rollup-plugin-svelte'; import resolve from '@rollup/plugin-node-resolve'; import commonjs from '@rollup/plugin-commonjs'; import livereload from 'rollup-plugin-livereload'; import { terser } from 'rollup-plugin-terser'; import sveltePreprocess from 'svelte-preprocess'; import typescript from '@rollup/plugin-typescript'; const production = !process.env.ROLLUP_WATCH; function serve() { let server; function toExit() { if (server) server.kill(0); } return { writeBundle() { if (server) return; server = require('child_process').spawn('npm', ['run', 'start', '--', '--dev'], { stdio: ['ignore', 'inherit', 'inherit'], shell: true }); process.on('SIGTERM', toExit); process.on('exit', toExit); } }; } export default { input: 'src/main.ts', output: { sourcemap: true, format: 'es', name: 'app', file: 'public/build/bundle.js' }, plugins: [ // nodePolyfills(), svelte({ // enable run-time checks when not in production dev: !production, // we'll extract any component CSS out into // a separate file - better for performance css: css => { css.write('bundle.css'); }, preprocess: sveltePreprocess(), }), // If you have external dependencies installed from // npm, you'll most likely need these plugins. In // some cases you'll need additional configuration - // consult the documentation for details: // https://github.com/rollup/plugins/tree/master/packages/commonjs resolve({ browser: true, dedupe: ['svelte'] }), commonjs(), typescript({ sourceMap: !production, inlineSources: !production }), // In dev mode, call `npm run start` once // the bundle has been generated !production && serve(), // Watch the `public` directory and refresh the // browser on changes when not in production !production && livereload('public'), // If we're building for production (npm run build // instead of npm run dev), minify production && terser() ], watch: { clearScreen: false } };