Add rollup config to output CommonJS bundle

sdk/typescript/packages/sdk/package.json

@@ -3,14 +3,11 @@
   "version": "1.1.4",
   "license": "Apache-2.0",
   "author": "Nym Technologies SA",
-  "main": "dist/index.js",
+  "main": "dist/cjs/index.js",
+  "module": "dist/index.js",
   "types": "./dist/index.d.ts",
   "files": [
     "dist/worker.js",
-    "dist/nym_client_wasm.d.ts",
-    "dist/nym_client_wasm.js",
-    "dist/nym_client_wasm_bg.wasm",
-    "dist/nym_client_wasm_bg.wasm.d.ts",
     "dist/**/*"
   ],
   "exports": {
@@ -28,10 +25,11 @@
     "build:dependencies:nym-client-wasm": "../nym-client-wasm/scripts/build.sh",
     "prebuild": "yarn build:dependencies",
     "build": "yarn build:only-this",
-    "build:only-this": "run-s build:worker build:tsc build:worker:move",
+    "build:only-this": "run-s build:worker build:tsc build:worker:move build:rollup:cjs",
     "postbuild:only-this": "yarn copy:readme",
     "build:tsc": "tsc",
     "build:worker": "rollup src/mixnet/wasm/worker.ts -c rollup.config.mjs",
+    "build:rollup:cjs": "rollup -c rollup-cjs.config.mjs",
     "postbuild:worker": "rm -rf dist/index.d.ts dist/coconut dist/mixnet && mkdir -p dist/mixnet/wasm",
     "build:worker:move": "rm dist/mixnet/wasm/worker.js && mv dist/worker.js dist/mixnet/wasm",
     "copy:readme": "cp README.md dist"

sdk/typescript/packages/sdk/rollup-cjs.config.mjs

@@ -0,0 +1,28 @@
+import typescript from '@rollup/plugin-typescript';
+import resolve from '@rollup/plugin-node-resolve';
+import { wasm } from '@rollup/plugin-wasm';
+import replace from '@rollup/plugin-replace';
+
+const extensions = [
+  '.js', '.jsx', '.ts', '.tsx',
+];
+
+export default {
+  input: 'src/index.ts',
+  output: {
+    dir: 'dist/cjs',
+    format: 'cjs',
+  },
+  plugins: [
+    resolve({ extensions }),
+    // this is some nasty monkey patching that removes the WASM URL (because it is handled by the `wasm` plugin)
+    replace({
+      values: { 'input = new URL(\'nym_client_wasm_bg.wasm\', import.meta.url);': 'input = undefined;' },
+      delimiters: ['', ''],
+      preventAssignment: true,
+    }),
+    // force the wasm plugin to embed the wasm bundle - this means no downstream bundlers have to worry about handling it
+    wasm({ maxFileSize: 10000000, targetEnv: 'browser' }),
+    typescript({ compilerOptions: { outDir: 'dist/cjs', declaration: false } }),
+  ],
+};