diff --git a/implementations/javascript/package.json b/implementations/javascript/package.json
index 9718949..811ef85 100644
--- a/implementations/javascript/package.json
+++ b/implementations/javascript/package.json
@@ -13,17 +13,20 @@
   "devDependencies": {
     "@types/jest": "^26.0.19",
     "jest": "^26.6.3",
+    "rollup": "^2.36.1",
+    "rollup-plugin-terser": "^7.0.2",
     "ts-jest": "^26.4.4",
     "ts-node-dev": "^1.1.1",
     "typescript": "^4.1.3"
   },
   "scripts": {
-    "prepare": "npx tsc",
-    "watch": "npx tsc -w",
-    "clean": "rm -rf lib",
-    "veryclean": "npm run clean && rm -rf node_modules",
+    "clean": "rm -rf lib dist",
+    "prepare": "npx tsc && npx rollup -c",
+    "rollupwatch": "npx rollup -c -w",
     "test": "npx jest",
-    "testwatch": "npx jest -w"
+    "testwatch": "npx jest -w",
+    "veryclean": "npm run clean && rm -rf node_modules",
+    "watch": "npx tsc -w"
   },
   "dependencies": {}
 }
diff --git a/implementations/javascript/rollup.config.js b/implementations/javascript/rollup.config.js
new file mode 100644
index 0000000..51395d1
--- /dev/null
+++ b/implementations/javascript/rollup.config.js
@@ -0,0 +1,34 @@
+import pkg from './package.json';
+import { terser } from 'rollup-plugin-terser';
+
+function distfile(insertion) {
+  const f = `${pkg.name}-${pkg.version}${insertion}.js`;
+  return `dist/${f}`;
+}
+
+function umd(insertion, extra) {
+  return {
+    file: distfile(insertion),
+    format: 'umd',
+    name: 'Preserves',
+    ... (extra || {})
+  };
+}
+
+function es6(insertion, extra) {
+  return {
+    file: distfile('.es6' + insertion),
+    format: 'es',
+    ... (extra || {})
+  };
+}
+
+export default {
+  input: 'lib/index.js',
+  output: [
+    umd(''),
+    umd('.min', { plugins: [terser()] }),
+    es6(''),
+    es6('.min', { plugins: [terser()] }),
+  ],
+}