Add IIFE/ Minified Rollup Bundler

.gitignore

@@ -30,7 +30,7 @@ bower_components
 .lock-wscript
 
 # Compiled binary addons (https://nodejs.org/api/addons.html)
-build/Release
+build
 
 # Dependency directories
 node_modules/

config/rollup.iife.js

@@ -0,0 +1,38 @@
+import { nodeResolve } from "@rollup/plugin-node-resolve";
+import commonJS from "@rollup/plugin-commonjs";
+import babel from "@rollup/plugin-babel";
+import nodePolyfills from "rollup-plugin-node-polyfills"
+import { terser } from "rollup-plugin-terser"
+
+const empty = "export default {}";
+
+export default {
+    input: "main.js",
+    output: {
+        file: "build/circomlibjs.js",
+        format: "iife",
+        sourcemap: "inline",
+        name: "circomlibjs"
+    },
+    plugins: [
+        commonJS(),
+        nodePolyfills(),
+        babel({
+            exclude: "node_modules/**",
+            presets: ["@babel/preset-react"],
+            babelHelpers: "bundled"
+        }),
+        terser(),
+        nodeResolve({
+            browser: true,
+            exportConditions: ['browser', 'default', 'module', 'require']
+        })
+    ],
+    onwarn: warning => {
+        if (
+            warning.code === 'THIS_IS_UNDEFINED'
+            || warning.code === 'CIRCULAR_DEPENDENCY'
+        ) { return; }
+        console.warn(warning.message);
+    }
+};

config/rollup.min.js

@@ -0,0 +1,10 @@
+import config from './rollup.iife.js';
+
+export default {
+    ...config,
+    output: {
+        ...config.output,
+        file: "build/circomlibjs.min.js",
+        sourcemap: false,
+    }
+};

package.json

@@ -12,7 +12,9 @@
   "scripts": {
     "test": "mocha",
     "poseidonOptimizeConstants": "node tools/poseidon_optimize_constants.js",
-    "build": "rollup -c rollup.cjs.config.js"
+    "build:cjs": "yarn rollup -c config/rollup.config.js",
+    "build:iife": "rollup -c config/rollup.iife.js",
+    "build:min": "rollup -c config/rollup.min.js"
   },
   "repository": {
     "type": "git",
@@ -34,14 +36,23 @@
   },
   "homepage": "https://github.com/iden3/circomlibjs#readme",
   "devDependencies": {
+    "@babel/core": "^7.17.7",
+    "@babel/preset-react": "^7.16.7",
+    "@rollup/plugin-babel": "^5.3.1",
+    "@rollup/plugin-commonjs": "^21.0.2",
+    "@rollup/plugin-node-resolve": "^13.1.3",
     "chai": "^4.3.4",
     "ganache-cli": "^6.12.2",
-    "mocha": "^9.1.3"
+    "mocha": "^9.1.3",
+    "rollup-plugin-node-polyfills": "^0.2.1",
+    "rollup-plugin-terser": "^7.0.2"
   },
   "dependencies": {
     "blake-hash": "^2.0.0",
     "blake2b": "^2.1.3",
     "ethers": "^5.5.1",
-    "ffjavascript": "^0.2.45"
+    "ffjavascript": "^0.2.45",
+    "global": "^4.4.0",
+    "rollup": "^2.70.1"
   }
 }