also expose commonjs prebid module

package.json

@@ -30,7 +30,8 @@
     },
     "./prebid": {
       "types": "./dist/index.d.ts",
-      "require": "./dist/prebid.cjs"
+      "require": "./dist/prebid.cjs",
+      "import": "./dist/prebid.mjs"
     },
     "./package.json": "./package.json"
   },
@@ -45,8 +46,8 @@
     "coverage": "nyc report --reporter=text-lcov > coverage.lcov && codecov",
     "test:it:browserstack": "npm run build-test-resources && wdio test-config/wdio.browserstack.conf.js",
     "test:it:local-chrome": "npm run build-test-resources && wdio test-config/wdio.local-chrome.conf.js",
-    "build": "rollup -c rollup/dist.config.js",
-    "build-test-resources": "rollup -c rollup/test-resources.config.js",
+    "build": "rollup --failAfterWarnings -c rollup/dist.config.js",
+    "build-test-resources": "rollup --failAfterWarnings -c rollup/test-resources.config.js",
     "lint": "eslint 'src/**/*.ts' 'test/**/*.ts'",
     "fix-js": "eslint --fix 'src/**/*.ts' 'test/**/*.ts' || exit 0",
     "release:ci:prepatch": "release-it patch --preRelease=alpha-$(git rev-parse --short HEAD) --ci",
@@ -66,7 +67,7 @@
   "devDependencies": {
     "@babel/plugin-transform-runtime": "^7.24.0",
     "@babel/preset-env": "^7.24.0",
-    "@babel/runtime-corejs3": "^7.24.0",
+    "@babel/runtime-corejs3": "^7.24.5",
     "@rollup/plugin-babel": "^6.0.4",
     "@rollup/plugin-commonjs": "^25.0.4",
     "@rollup/plugin-node-resolve": "^15.2.1",

rollup/dist.config.js

@@ -14,7 +14,7 @@ const prebid = {
   input: "./src/index.ts",
   tsOutput: `${OUTPUT_DIR}/prebid.ts.mjs`,
   babelOutput: `${OUTPUT_DIR}/prebid.babel.mjs`,
-  output: `${OUTPUT_DIR}/prebid.cjs`
+  output: (ext) => `${OUTPUT_DIR}/prebid.${ext}`
 }
 
 export default [
@@ -32,7 +32,7 @@ export default [
         dir: OUTPUT_DIR,
         entryFileNames: '[name].mjs',
         chunkFileNames: '[name]-[hash].mjs',
-        format: 'es',
+        format: 'esm',
         sourcemap: false
       }
     ],
@@ -90,11 +90,18 @@ export default [
   // minify and bundle
   {
     input: prebid.babelOutput,
-    output: {
-      file: prebid.output,
-      format: 'cjs',
-      sourcemap: false
-    },
+    output: [
+      {
+        file: prebid.output('cjs'),
+        format: 'cjs',
+        sourcemap: false
+      },
+      {
+        file: prebid.output('mjs'),
+        format: 'esm',
+        sourcemap: false
+      }
+    ],
     plugins: [
       commonJs({ sourceMap: false }),
       resolve(),