speed parser optimization

packages/bbob-parser/rollup.config.js

@@ -0,0 +1,33 @@
+import resolve from 'rollup-plugin-node-resolve';
+import commonjs from 'rollup-plugin-commonjs';
+import pkg from './package.json';
+
+export default [
+  // browser-friendly UMD build
+  {
+    input: 'lib/index.js',
+    output: {
+      name: 'BBobParser',
+      file: pkg.browser,
+      format: 'umd',
+    },
+    plugins: [
+      resolve(), // so Rollup can find `ms`
+      commonjs(), // so Rollup can convert `ms` to an ES module
+    ],
+  },
+
+  // CommonJS (for Node) and ES module (for bundlers) build.
+  // (We could have three entries in the configuration array
+  // instead of two, but it's quicker to generate multiple
+  // builds from a single configuration where possible, using
+  // an array for the output` option, where we can specify
+  // `file` and `format` for each target)
+  {
+    input: 'lib/index.js',
+    output: [
+      { file: pkg.main, format: 'cjs' },
+      { file: pkg.module, format: 'es' },
+    ],
+  },
+];