Incubator-echarts: 中国地图无法按需加载，需要手动修改china.js

[ceerqingting]

One-line summary [问题简述]

按需加载echart中国地图，发现只要引入了china.js，按需加载无效，所有的内容都被引用进来

Version & Environment [版本及环境]

"webpack": "^3.6.0"

• ECharts version [ECharts 版本]:
  "echarts": "^4.0.4"

china.js 源码：

(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define(['exports', 'echarts'], factory);
    } else if (typeof exports === 'object' && typeof exports.nodeName !== 'string') {
        // CommonJS
        factory(exports, require('echarts'));
    } else {
        // Browser globals
        factory({}, root.echarts);
    }
}(this, function (exports, echarts) {
   echarts.registerMap()
})

修改后：

const echarts = require('echarts/lib/echarts')
 echarts.registerMap()

Expected behaviour [期望结果]

无需手动修改配置

ECharts option [ECharts配置项]

const echarts = require('echarts/lib/echarts')

require('echarts/lib/chart/line')

require('echarts/lib/chart/bar')

require('echarts/lib/chart/pictorialBar')

require('echarts/lib/chart/pie')

require('echarts/lib/chart/scatter')

require('echarts/lib/chart/effectScatter')

require('echarts/lib/chart/map')

require('echarts/lib/component/grid')

require('echarts/lib/component/tooltip')

require('echarts/lib/component/axisPointer')

require('echarts/lib/component/geo')

require('echarts/lib/component/visualMap')

require('echarts/lib/component/toolbox')

export default echarts

Other comments [其他信息]

[PeterRock]

文档中也确实没有表明china.js可以按需加载：可以按需引入的模块列表

不知能否做增强

[PeterRock]

可以通过动态引入json类型的数据实现。