chore: add start script

package.json

@@ -5,6 +5,7 @@
     "build": "cross-env NODE_ENV=production FORCE_COLOR=1 lerna run build --stream",
     "build:watch": "FORCE_COLOR=1 lerna run build:watch --stream --concurrency 99 --no-sort",
     "lint": "eslint packages --ext .js --ext .jsx",
+    "start": "MONO=true ./packages/cli/lib/index.js serve --entry ./test/integration/sn.js",
     "test": "yarn run test:unit",
     "test:integration": "aw puppet -c aw.config.js --type integration",
     "test:unit": "aw -c aw.config.js"

rollup.config.js

@@ -55,6 +55,8 @@ const propTypes = [
   'elementType',
 ];
 
+const watch = process.argv.indexOf('-w') > 2;
+
 const config = (isEsm) => {
   const outputFile = isEsm ? pkg.module : pkg.main;
   const basename = path.basename(outputFile);
@@ -71,7 +73,7 @@ const config = (isEsm) => {
   const esmExternals = peers;
 
   // peers that are not devDeps should be externals for full bundle
-  const bundleExternals = peers.filter(p => typeof (pkg.devDependencies || {})[p] === 'undefined');
+  const bundleExternals = peers.filter((p) => typeof (pkg.devDependencies || {})[p] === 'undefined');
 
   const external = isEsm ? esmExternals : bundleExternals;
   const globals = {};
@@ -157,6 +159,6 @@ const config = (isEsm) => {
 };
 
 module.exports = [
-  config(),
+  watch ? false : config(),
   config(true),
-];
+].filter(Boolean);