Separate CLI and API

api/rollup.config.js

@@ -0,0 +1,42 @@
+import resolve from '@rollup/plugin-node-resolve';
+import cjs from '@rollup/plugin-commonjs';
+import asset from './lib/asset-plugin.js';
+import json from './lib/json-plugin.js';
+import autojson from './lib/autojson-plugin.js';
+import { getBabelOutputPlugin } from '@rollup/plugin-babel';
+import { builtinModules } from 'module';
+
+/** @type {import('rollup').RollupOptions} */
+export default {
+  input: 'src/index.js',
+  output: {
+    dir: 'build',
+    format: 'cjs',
+    assetFileNames: '[name]-[hash][extname]',
+  },
+  plugins: [
+    resolve(),
+    cjs(),
+    asset(),
+    autojson(),
+    json(),
+    getBabelOutputPlugin({
+      babelrc: false,
+      configFile: false,
+      minified: process.env.DEBUG != '',
+      comments: true,
+      presets: [
+        [
+          '@babel/preset-env',
+          {
+            targets: {
+              node: 12,
+            },
+            loose: true,
+          },
+        ],
+      ],
+    }),
+  ],
+  external: [...builtinModules, 'web-streams-polyfill'],
+};