[Build] reduce dependencies (#422)

build/dev.js

@@ -1,5 +1,5 @@
 require('./compiler');
-const fs = require('fs-extra');
+const fs = require('fs');
 const path = require('path');
 const glob = require('fast-glob');
 const serve = require('webpack-serve');

package.json

@@ -4,7 +4,7 @@
   "author": "youzan",
   "license": "MIT",
   "miniprogram": "dist",
-  "description": "高颜值、好用、易扩展的小程序 UI 库，Powered by 有赞",
+  "description": "轻量、可靠的小程序 UI 组件库",
   "scripts": {
     "dev": "node build/dev.js",
     "lint": "eslint ./packages --ext .js",
@@ -20,17 +20,11 @@
     "type": "git",
     "url": "git+ssh://git@github.com/youzan/vant-weapp.git"
   },
-  "bugs": {
-    "url": "https://github.com/youzan/vant-weapp/issues"
-  },
   "homepage": "https://github.com/youzan/vant-weapp#readme",
   "devDependencies": {
-    "autoprefixer": "^9.0.2",
-    "babel-cli": "^6.26.0",
+    "autoprefixer": "^9.1.1",
     "babel-core": "^6.26.3",
-    "babel-jest": "^23.4.2",
     "babel-loader": "^7.1.5",
-    "babel-plugin-transform-runtime": "^6.15.0",
     "babel-preset-env": "^1.7.0",
     "babel-preset-stage-0": "^6.24.1",
     "cross-env": "^5.1.4",
@@ -39,32 +33,24 @@
     "eslint-plugin-vue-libs": "^3.0.0",
     "fast-glob": "^2.2.2",
     "fast-vue-md-loader": "^1.0.3",
-    "fs-extra": "^7.0.0",
     "gh-pages": "^1.2.0",
     "gulp": "^3.9.1",
-    "gulp-babel": "^7.0.1",
     "gulp-clean-css": "^3.9.0",
     "gulp-postcss": "^8.0.0",
     "gulp-rename": "^1.2.2",
-    "gulp-util": "^3.0.8",
     "html-webpack-plugin": "^3.2.0",
-    "node-watch": "^0.5.5",
     "postcss-calc": "^6.0.1",
     "postcss-easy-import": "^3.0.0",
     "postcss-loader": "^3.0.0",
     "precss": "^2.0.0",
     "progress-bar-webpack-plugin": "^1.11.0",
-    "shelljs": "^0.8.2",
     "style-loader": "^0.22.1",
-    "url-loader": "^1.0.1",
     "vant-doc": "^1.0.14",
     "vue": "2.5.17",
     "vue-loader": "^15.2.6",
     "vue-router": "^3.0.1",
     "vue-template-compiler": "2.5.17",
-    "vue-template-es2015-compiler": "^1.6.0",
     "webpack": "^4.16.5",
-    "webpack-cli": "^3.1.0",
     "webpack-serve": "^2.0.2"
   }
 }