rollup.config.js

/** @format */

import shim from "rollup-plugin-shim";
import json from "@rollup/plugin-json";
import svelte from "rollup-plugin-svelte";
import resolve from "@rollup/plugin-node-resolve";
import css from "rollup-plugin-css-only";
import commonjs from "@rollup/plugin-commonjs";
import inject from "@rollup/plugin-inject";
import replace from "@rollup/plugin-replace";
import { terser } from "rollup-plugin-terser";

const production = !!process.env.PRODUCTION;

export default {
  input: "client/main.js",
  output: {
    sourcemap: true,
    format: "iife",
    name: "app",
    file: "static/bundle.js",
  },
  plugins: [
    json(),

    shim({
      fengari: "export default window.fengari",
    }),

    svelte({
      // enable run-time checks when not in production
      compilerOptions: {
        dev: !production,

        css: (css) => {
          css.write("static/bundle.css");
        },
      },
    }),

    css({ output: "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/rollup-plugin-commonjs
    resolve({
      browser: true,
      dedupe: (importee) =>
        importee === "svelte" || importee.startsWith("svelte/"),
      preferBuiltins: false,
    }),

    commonjs(),

    inject({
      Buffer: ["buffer", "Buffer"],
    }),

    replace({
      preventAssignment: true,
      values: { "process.env.GITHUB_REPO": `'${process.env.GITHUB_REPO}'` },
    }),

    // If we're building for production (npm run build
    // instead of npm run dev), minify
    production && terser(),
  ],
  watch: {
    clearScreen: false,
  },
};