init (graduate from prototype)

scripts/dev.js

@@ -0,0 +1,25 @@
+// Run Rollup in watch mode for a single package for development.
+// Only the ES modules format will be generated, as it is expected to be tested
+// in a modern browser using <script type="module">.
+// Defaults to watch the `vue` meta package.
+// To specific the package to watch, simply pass its name. e.g.
+// ```
+// yarn dev observer
+// ```
+
+const execa = require('execa')
+const { targets, fuzzyMatchTarget } = require('./utils')
+
+const target = fuzzyMatchTarget(process.argv[2] || 'runtime-dom')
+
+execa(
+  'rollup',
+  [
+    '-wc',
+    '--environment',
+    `TARGET:${target},FORMATS:umd`
+  ],
+  {
+    stdio: 'inherit'
+  }
+)