minify & correctly generate sourcemap

package.json

@@ -74,7 +74,10 @@
         "rollup-plugin-commonjs": "^9.3.4",
         "rollup-plugin-node-resolve": "^4.0.1",
         "rollup-plugin-re": "^1.0.7",
+        "rollup-plugin-sourcemaps": "^0.4.2",
+        "rollup-plugin-terser": "^4.0.4",
         "rollup-plugin-typescript2": "^0.20.1",
+        "rollup-plugin-uglify": "^6.0.2",
         "typescript": "^3.4.1"
     }
 }

scripts/rollup.config.ts

@@ -1,10 +1,13 @@
+import sourceMaps from 'rollup-plugin-sourcemaps'
 import nodeResolve from 'rollup-plugin-node-resolve';
 import commonjs from 'rollup-plugin-commonjs';
 import * as pkg from '../package.json';
 import replace from 'rollup-plugin-re';
 import {RollupOptions} from "rollup";
 import {modules, projectRoot} from "./util";
 import {resolve} from "path";
+import { uglify } from 'rollup-plugin-uglify'
+import { terser } from 'rollup-plugin-terser'
 
 const buildVars = (function() {
     const date = new Date();
@@ -30,19 +33,29 @@ const plugins = [
     }),
     nodeResolve(),
     commonjs(),
+    // Resolve source maps to the original source
+    sourceMaps(),
 ];
 
-function configsFor(name: string): RollupOptions[] {
+function concatIf<T>(test: boolean, a: T[], b:()=>T[]) {
+    return test? a.concat(b()) : a;
+}
+
+function outputFile(f: string, isProd: boolean) {
+    return isProd ? f.replace(/\.js$/, '.min.js') : f;
+}
+
+function configsFor(module: string, isProd: boolean): RollupOptions[] {
     // const tsconfig = await import(`${srcDir}/${name}/tsconfig.json`);
     // const outDir = tsconfig.compilerOptions.outDir;
-    const d = resolve(projectRoot, 'dist', name);
-    const isRangyModule = name !== 'core';
+    const d = resolve(projectRoot, 'dist', module);
+    const isRangyModule = module !== 'core';
     // Indicate here external modules you don't wanna include in your bundle
     const external = isRangyModule? ['rangy2'] : [];
     return [
         {   input: [`${d}/esm5/index.js`],
             output: {
-                file: `${d}/bundles/index.umd.js`,
+                file: outputFile(`${d}/bundles/index.umd.js`, isProd),
                 format: 'umd',
                 name: 'rangy',
                 sourcemap: true,
@@ -51,22 +64,25 @@ function configsFor(name: string): RollupOptions[] {
             },
             inlineDynamicImports: true,
             external,
-            plugins,
+            plugins: concatIf(isProd, plugins, uglify),
         },
         {   input: [`${d}/esm2015/index.js`],
             output: {
-                file: `${d}/bundles/index.esm.js`,
+                file: outputFile(`${d}/bundles/index.esm.js`, isProd),
                 format: 'es',
                 sourcemap: true,
             },
             inlineDynamicImports: true,
             // only bundle tslib, core-js in umd file
             external: (id) => [...external, 'tslib', 'core-js'].includes(id) || id.startsWith('core-js/'),
-            plugins,
+            plugins: concatIf(isProd, plugins, terser),
         }
     ]
 }
 
-const configs = modules.flatMap(configsFor);
+const configs = modules.flatMap(m => [
+    ...configsFor(m, false),
+    ...configsFor(m, true)
+]);
 
 export default configs;