fix(dual-mode): generated proper cjs and es module versions

Author: travi

example.js

@@ -2,7 +2,7 @@
 import stubbedFs from 'mock-fs';
 /* eslint-disable-next-line no-unused-vars */
 import {fileTypes} from '@form8ion/core';
-import {write} from './lib/index.cjs';
+import {write} from './lib/index.js';
 
 // remark-usage-ignore-next
 stubbedFs({});

package.json

@@ -12,11 +12,11 @@
     "access": "public"
   },
   "runkitExampleFilename": "./example.js",
-  "main": "./lib/index.cjs.js",
-  "module": "./lib/index.es.js",
+  "main": "./lib/index.js",
+  "module": "./lib/index.mjs",
   "exports": {
-    "require": "./lib/index.cjs.js",
-    "import": "./lib/index.es.js"
+    "require": "./lib/index.js",
+    "import": "./lib/index.mjs"
   },
   "sideEffects": false,
   "repository": "form8ion/config-file",

rollup.config.js

@@ -4,7 +4,7 @@ export default {
   input: 'src/index.js',
   plugins: [autoExternal()],
   output: [
-    {file: 'lib/index.cjs.js', format: 'cjs', sourcemap: true},
-    {file: 'lib/index.es.js', format: 'es', sourcemap: true}
+    {file: 'lib/index.js', format: 'cjs', sourcemap: true},
+    {file: 'lib/index.mjs', format: 'es', sourcemap: true}
   ]
 };