codesandbox-deps: use rollup instead of parcel (codesandbox#2084)

Author: lbogdan

packages/deps/package.json

@@ -5,12 +5,18 @@
   "private": true,
   "main": "dist/index.js",
   "scripts": {
-    "build": "parcel build src/index.js src/tern.js"
+    "build": "yarn build:clean && yarn build:rollup",
+    "build:clean": "rimraf dist",
+    "build:rollup": "rollup -c"
   },
   "dependencies": {
     "tern": "^0.21.0"
   },
   "devDependencies": {
-    "parcel": "^1.12.3"
+    "rimraf": "^2.6.3",
+    "rollup": "^1.16.2",
+    "rollup-plugin-commonjs": "^10.0.0",
+    "rollup-plugin-json": "^4.0.0",
+    "rollup-plugin-node-resolve": "^5.0.4"
   }
 }

packages/deps/rollup.config.js

@@ -0,0 +1,12 @@
+import cjs from 'rollup-plugin-commonjs';
+import json from 'rollup-plugin-json';
+import resolve from 'rollup-plugin-node-resolve';
+
+export default {
+  input: 'src/tern.js',
+  output: {
+    file: 'dist/tern.js',
+    format: 'cjs',
+  },
+  plugins: [cjs(), json(), resolve()],
+};