fix: move rollup config and case fix

scripts/rollup.config.js

@@ -0,0 +1,53 @@
+import commonjs from 'rollup-plugin-commonjs'
+import nodeResolve from 'rollup-plugin-node-resolve'
+import json from 'rollup-plugin-json'
+import buble from 'rollup-plugin-buble'
+import { terser } from 'rollup-plugin-terser'
+
+const pkg = require('./package.json')
+
+const banner =  `/**
+ * vue-meta v${pkg.version}
+ * (c) ${new Date().getFullYear()} Declan de Wet & Sébastien Chopin (@Atinux)
+ * @license MIT
+ */
+`.replace(/ {4}/gm, '').trim()
+
+const baseConfig = {
+  input: './src/index.js',
+  output: {
+    file: pkg.web,
+    format: 'umd',
+    name: 'VueMeta',
+    sourcemap: false,
+    banner
+  },
+  plugins: [
+    json(),
+    nodeResolve(),
+    commonjs(),
+    buble(),
+  ]
+}
+
+export default [{
+  ...baseConfig,
+}, {
+  ...baseConfig,
+  output: {
+    ...baseConfig.output,
+    file: pkg.web.replace('.js', '.min.js'),
+  },
+  plugins: [
+    ...baseConfig.plugins,
+    terser()
+  ]
+}, {
+  ...baseConfig,
+  output: {
+    ...baseConfig.output,
+    file: pkg.main,
+    format: 'cjs'
+  },
+  external: Object.keys(pkg.dependencies)
+}]