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rollup.config.js
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import commonjs from '@rollup/plugin-commonjs';
import resolve from '@rollup/plugin-node-resolve';
import replace from '@rollup/plugin-replace';
import typescript from '@rollup/plugin-typescript';
import path from 'path';
import copy from 'rollup-plugin-copy';
import css from 'rollup-plugin-css-only';
import livereload from 'rollup-plugin-livereload';
import svelte from 'rollup-plugin-svelte';
import { terser } from 'rollup-plugin-terser';
import sveltePreprocess from 'svelte-preprocess';
import * as pkg from './package.json';
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: !production,
format: 'iife',
name: 'app',
file: 'public/build/bundle.js'
},
plugins: [
replace({
delimiters: ['%', '%'],
include: 'src/version.ts',
preventAssignment: true,
VERSION: pkg.version,
}),
svelte({
preprocess: sveltePreprocess({
sourceMap: !production,
scss: { includePaths: [path.join(__dirname, './src')] }
}),
compilerOptions: {
// 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({ output: 'bundle.css' }),
copy({
copyOnce: true,
targets: [
{
src: 'node_modules/bootstrap/dist/css/bootstrap.min.css*',
dest: 'public/vendor'
},
{
src: 'node_modules/bootstrap/dist/js/bootstrap.bundle.min.js*',
dest: 'public/vendor'
}
]
}),
// 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({
format: { comments: false, },
compress: {
arrows: true,
arguments: true,
booleans_as_integers: true,
collapse_vars: true,
dead_code: false,
drop_console: true,
drop_debugger: true,
},
}),
],
watch: {
clearScreen: false
}
};