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import fs from "fs";
import svelte from "rollup-plugin-svelte";
import commonjs from "@rollup/plugin-commonjs";
import resolve from "@rollup/plugin-node-resolve";
import livereload from "rollup-plugin-livereload";
import { terser } from "rollup-plugin-terser";
import sveltePreprocess from "svelte-preprocess";
import typescript from "@rollup/plugin-typescript";
import css from "rollup-plugin-css-only";
import dev from "rollup-plugin-dev";
import replace from "@rollup/plugin-replace";
import json from "@rollup/plugin-json";
const production = !process.env.ROLLUP_WATCH;
const envVariables = fs.readFileSync("build.env", "utf-8")
.split("\n")
.filter(l => l.length > 0)
.map(l => l.trim().split("="))
.reduce((p, [key, value]) => ({...p, [key]: value}), {});
export default {
input: "src/main.ts",
output: {
sourcemap: true,
format: "iife",
name: "app",
file: "public/build/bundle.js"
},
plugins: [
svelte({
preprocess: sveltePreprocess(),
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" }),
// 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,
preferBuiltins: false,
dedupe: ["svelte"],
}),
json(),
commonjs({
include: 'node_modules/**',
}),
typescript({
sourceMap: !production,
inlineSources: !production
}),
replace({
// 2 level deep object should be stringify
"process.env": JSON.stringify({
NODE_ENV: production ? "production" : "development",
...envVariables,
}),
}),
// Watch the `public` directory and refresh the
// browser on changes when not in production
!production && livereload("public"),
// Add dev server in development.
!production && dev({
dirs: ["public"],
spa: "public/index.html",
port: 5000,
proxy: {
"/api/*": process.env.API_PROXY_TARGET || "localhost:8000",
},
}),
// If we're building for production (npm run build
// instead of npm run dev), minify
production && terser({
output: { comments: false },
})
],
watch: {
clearScreen: false
},
onwarn: function(warning) {
// Skip certain warnings
if ( warning.code === "THIS_IS_UNDEFINED" ) { return; }
// console.warn everything else
console.warn( warning.message );
}
};