add a new dev script at the root (#256)

* add a new dev script at the root

* remove dev script echo and be more specific about package names

* go back to '*' to make dev script resilient to name change

Author: mwcz

package.json

@@ -4,6 +4,7 @@
     "start": "npm run doc-listing-inject && spandx",
     "lerna": "lerna",
     "test": "npm run build && wct --configFile wct.conf.json test/index.html",
+    "dev": "bash scripts/dev.sh",
     "build": "lerna run build",
     "clean": "rm -rf node_modules package-lock.json {elements,themes}/*/{node_modules,package-lock.json}",
     "bootstrap": "lerna bootstrap --hoist",

scripts/dev.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+CMD="npm run lerna -- run dev --parallel --no-bail --include-filtered-dependencies"
+
+for el in "$@"; do
+  CMD="$CMD --scope \"*/$el\""
+done
+
+eval $CMD