miniprogram-simulate/src/compile.js

tools for miniprogram custom component unit test

const path = require('path')
const _ = require('./utils')

const compiler = _.getCompiler()
const wxmlCache = {}
const compilerResCache = {}

module.exports = {
  /**
     * 获取 wxml
     */
  getWxml(componentPath, config) {
    let wxml = wxmlCache[componentPath]

    if (wxml) return wxml
    if (config.compiler === 'official') {
      // 使用官方编译器
      if (!compiler) {
        wxml = _.readFile(`${componentPath}.wxml`)
        if (typeof wxml !== 'function') {
          // 可能是用官方编译器编译好的函数，所以需要加此判断（如在 karma 测试）
          throw new Error('not support official compiler, please use simulate compiler')
        }
      } else {
        let gwx
        if (compilerResCache[config.rootPath]) {
          gwx = compilerResCache[config.rootPath]
        } else {
          const compileString = compiler.wxmlToJs(config.rootPath, config.compilerOptions)
          // eslint-disable-next-line no-new-func
          const compileFunc = new Function(compileString)

          gwx = compileFunc()
          compilerResCache[config.rootPath] = gwx
        }

        let relativeWxmlPath = `${path.relative(config.rootPath, componentPath)}.wxml`
        relativeWxmlPath = relativeWxmlPath.replace(/\\/g, '/')

        // 构建编译结果为函数
        wxml = gwx(relativeWxmlPath)
      }
    } else {
      // 使用纯 js 实现的编译器
      wxml = _.readFile(`${componentPath}.wxml`)
    }

    // 缓存 wxml 内容
    wxmlCache[componentPath] = wxml

    return wxml
  }
}