remove "merge" dependency

Author: moxun1639

package.json

@@ -41,7 +41,5 @@
     "webpack": "^4.43.0",
     "webpack-cli": "^3.3.8"
   },
-  "dependencies": {
-    "merge": "^1.2.1"
-  }
+  "dependencies": {}
 }

src/lib/Dict.js

@@ -1,7 +1,7 @@
 import Dependency from './Dependency'
 import DictMeta from './DictMeta'
 import DictData from './DictData'
-import merge from 'merge'
+import merge from './util/merge'
 
 const DEFAULT_DICT_OPTIONS = {
   types: [],

src/lib/DictMeta.js

@@ -1,5 +1,5 @@
 import DictOptions from './DictOptions'
-import merge from 'merge'
+import merge from './util/merge'
 
 /**
  * @classdesc 字典元数据
@@ -26,13 +26,12 @@ export default class DictMeta {
  * @returns {DictMeta}
  */
 DictMeta.parse= function(options) {
-  let opts = null
+  const opts = merge.recursive({}, DictOptions.metas['*'])
   if (typeof options === 'string') {
-    opts = DictOptions.metas[options] || {}
     opts.type = options
+    merge.recursive(opts, DictOptions.metas[options])
   } else if (typeof options === 'object') {
-    opts = options
+    merge.recursive(opts, DictOptions.metas[options.type], options)
   }
-  opts = merge.recursive(true, DictOptions.metas['*'], DictOptions.metas[opts.type], opts)
   return new DictMeta(opts)
 }

src/lib/DictOptions.js

@@ -1,4 +1,4 @@
-import merge from 'merge'
+import merge from './util/merge'
 import dictConverter from './DictConverter'
 
 export const options = {

src/lib/util/merge.js

@@ -0,0 +1,24 @@
+function recursive(dst, ...srcs) {
+   srcs.forEach(function(src) {
+    recursiveMerge(dst, src)
+   })
+   return dst
+}
+
+function recursiveMerge(dst, src) {
+  for (let k in src) {
+    if (dst[k] === null || dst[k] === undefined) {
+      dst[k] = src[k]
+    }
+    if (Object.prototype.toString.call(dst[k]) === "[object Object]") {
+      recursive(dst[k], src[k])
+    } else {
+      dst[k] = src[k]
+    }
+  }
+  return dst
+}
+
+export default {
+  recursive,
+}