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rollup.config.js
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rollup.config.js
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import svelte from "rollup-plugin-svelte";
import resolve from "@rollup/plugin-node-resolve";
import commonjs from "@rollup/plugin-commonjs";
import json from "@rollup/plugin-json";
import replace from "@rollup/plugin-replace";
import livereload from "rollup-plugin-livereload";
import { terser } from "rollup-plugin-terser";
import postcss from "rollup-plugin-postcss";
import path from "path";
import { config } from "dotenv";
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("yarn", ["run", "start"], {
stdio: ["ignore", "inherit", "inherit"],
shell: true,
});
process.on("SIGTERM", toExit);
process.on("exit", toExit);
},
};
}
const postcssOptions = () => ({
extensions: [".scss", ".sass"],
extract: false,
minimize: true,
use: [
[
"sass",
{
includePaths: [
"./src/theme",
"./node_modules",
// This is only needed because we're using a local module. :-/
// Normally, you would not need this line.
path.resolve(__dirname, "..", "node_modules"),
],
},
],
],
});
export default {
input: "src/main.js",
output: {
sourcemap: true,
format: "iife",
name: "app",
file: "public/build/bundle.js",
},
plugins: [
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");
},
}),
// 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(),
json(),
replace({
// stringify the object
__myapp: JSON.stringify({
env: {
TARGET: process.env.TARGET,
...config().parsed,
},
}),
}),
postcss(postcssOptions()),
// 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,
},
};