uni.config.js

const fs = require('fs')
const path = require('path')
const { parseJson } = require('@dcloudio/uni-cli-shared/lib/json')

const COMPONENTS_DIR_NAME = 'wxcomponents'

module.exports = {
  options: {
    cssVars: {
      '--status-bar-height': '25px',
      '--window-top': '0px',
      '--window-bottom': '0px',
      '--window-left': '0px',
      '--window-right': '0px'
    },
    extnames: {
      style: '.wxss',
      template: '.wxml',
      filter: '.wxs'
    },
    filterTag: 'wxs',
    project: 'project.config.json',
    subPackages: true,
    darkmode: true
  },
  copyWebpackOptions (platformOptions, vueOptions) {
    const copyOptions = [
      'theme.json',
      'sitemap.json',
      'ext.json',
      'custom-tab-bar',
      'functional-pages'
    ]

    if (process.env.UNI_MP_PLUGIN) {
      copyOptions.push({
        from: path.resolve(process.env.UNI_INPUT_DIR, 'plugin.json'),
        transform: content => JSON.stringify(parseJson(content.toString(), true))
      })
    }

    const workers = platformOptions.workers
    workers && copyOptions.push(workers)

    const manifestConfig = process.UNI_MANIFEST;
    const weixinConfig = manifestConfig['mp-weixin'] || {};
    const copyWxComponentsOnDemandSwitch = !!weixinConfig.copyWxComponentsOnDemandSwitch; // 默认值false

    if (!copyWxComponentsOnDemandSwitch) {
      const wxcomponentsDir = path.resolve(process.env.UNI_INPUT_DIR, COMPONENTS_DIR_NAME);
      if (fs.existsSync(wxcomponentsDir)) {
        copyOptions.push({
          from: wxcomponentsDir,
          to: COMPONENTS_DIR_NAME,
          ignore: ['**/*.vue', '**/*.css'] // v3 会自动转换生成vue,css文件，需要过滤
        });
      }
    }
    global.uniModules.forEach(module => {
      const wxcomponentsDir = path.resolve(process.env.UNI_INPUT_DIR, 'uni_modules', module, COMPONENTS_DIR_NAME)
      if (fs.existsSync(wxcomponentsDir)) {
        copyOptions.push({
          from: wxcomponentsDir,
          to: 'uni_modules/' + module + '/' + COMPONENTS_DIR_NAME,
          ignore: ['**/*.vue', '**/*.css'] // v3 会自动转换生成vue,css文件，需要过滤
        })
      }
    })
    return copyOptions
  }
}