add dev server (ApoorvSaxena#60)

* ✨ add dev server closes ApoorvSaxena#33

* ✨ add watch mode

build.js

@@ -3,6 +3,7 @@ const babel = require('rollup-plugin-babel')
 const filesize = require('rollup-plugin-filesize')
 const uglify = require('rollup-plugin-uglify')
 const license = require('rollup-plugin-license')
+const chokidar = require('chokidar')
 
 const targets = {
   umd: 'dist/lozad.js',
@@ -57,6 +58,17 @@ function build(format) {
   )
 }
 
-Promise.all([build('umd'), build('min')]).catch(err => {
-  console.error(err)
-})
+function main() {
+  return Promise.all([build('umd'), build('min')]).catch(err => {
+    console.error(err)
+  })
+}
+
+main()
+
+if (process.env.NODE_ENV === 'development') {
+  chokidar.watch('src/**/*.js').on('change', path => {
+    console.log('CHANGE: ' + path)
+    main()
+  })
+}

dist/lozad.js

@@ -1,4 +1,4 @@
-/*! lozad.js - v1.0.8 - 2017-10-13
+/*! lozad.js - v1.0.8 - 2017-10-14
 * https://github.com/ApoorvSaxena/lozad.js
 * Copyright (c) 2017 Apoorv Saxena; Licensed MIT */
 

package.json

@@ -6,11 +6,14 @@
   "homepage": "https://github.com/ApoorvSaxena/lozad.js",
   "scripts": {
     "test": "nyc mocha",
-    "build": "node build.js",
+    "build": "cross-env NODE_ENV=production node build.js",
+    "build:watch": "cross-env NODE_ENV=development node build.js",
     "prepublish": "npm run build",
     "prelint": "prettier --single-quote --no-semi --no-bracket-spacing --trailing-comma none --write \"lib/**/*.js\" --write build.js --write \"test/*.js\"",
     "precommit": "npm run lint && npm run build",
-    "lint": "xo --fix src/*.js build.js test/*.js"
+    "lint": "xo --fix src/*.js build.js test/*.js",
+    "serve": "browser-sync start --server \"demo\" --server \".\" --files \"demo\" --files \"dist\" --port 3000",
+    "dev": "run-p -r serve build:watch"
   },
   "author": {
     "name": "Apoorv Saxena",
@@ -49,11 +52,15 @@
     "babel-core": "^6.26.0",
     "babel-preset-env": "^1.6.0",
     "babel-preset-stage-0": "^6.24.1",
+    "browser-sync": "^2.18.13",
+    "chokidar": "^1.7.0",
+    "cross-env": "^5.0.5",
+    "husky": "^0.14.3",
     "jsdom": "^11.2.0",
     "jsdom-global": "^3.0.2",
     "mocha": "^3.5.1",
+    "npm-run-all": "^4.1.1",
     "nyc": "^11.2.1",
-    "husky": "^0.14.3",
     "prettier": "^1.6.1",
     "rollup": "^0.49.2",
     "rollup-plugin-babel": "^3.0.2",