refactor: get rid of lodash

The only used lodash function is `isBoolean` which can easily be
self implemented.

Author: gruhn

config/webpack.config.common.js

@@ -20,7 +20,6 @@ module.exports = merge(base, {
     'jsqr': 'jsqr',
     'babel-runtime': 'babel-runtime',
     'webrtc-adapter': 'webrtc-adapter',
-    'lodash/isBoolean': 'lodash/isBoolean',
   },
   plugins: [
     new webpack.optimize.UglifyJsPlugin({

package.json

@@ -12,7 +12,8 @@
     "vue-component",
     "qrcode",
     "qrcode-reader",
-    "qrcode-scanner"
+    "qrcode-scanner",
+    "webrtc"
   ],
   "license": "MIT",
   "main": "dist/vue-qrcode-reader.common.js",
@@ -84,7 +85,6 @@
   "dependencies": {
     "babel-runtime": "^6.26.0",
     "jsqr": "^1.1.0",
-    "lodash": "^4.17.4",
     "webrtc-adapter": "^6.2.1"
   }
 }

src/components/QrcodeReader.vue

@@ -33,7 +33,7 @@
 <script>
 import { keepScanning } from '../misc/scanner.js'
 import Camera from '../misc/camera.js'
-import isBoolean from 'lodash/isBoolean'
+import { isBoolean } from '../misc/util.js'
 import QrcodeDropZone from './QrcodeDropZone.vue'
 import CommonAPI from '../mixins/CommonAPI.vue'
 

src/components/QrcodeStream.vue

@@ -32,7 +32,7 @@
 <script>
 import { keepScanning } from '../misc/scanner.js'
 import Camera from '../misc/camera.js'
-import isBoolean from 'lodash/isBoolean'
+import { isBoolean, emptyObject } from '../misc/util.js'
 import CommonAPI from '../mixins/CommonAPI.vue'
 
 export default {
@@ -47,7 +47,7 @@ export default {
 
     camera: {
       type: [Object, Boolean],
-      default: () => ({}), // empty object
+      default: emptyObject
     },
 
     track: {
@@ -164,6 +164,7 @@ export default {
       deep: true,
 
       handler () {
+        debugger
         this.$emit('init', this.init())
       },
     },

src/misc/util.js

@@ -0,0 +1,8 @@
+
+export function isBoolean (value) {
+  return value === true || value === false
+}
+
+export function emptyObject () {
+  return {}
+}