jsdelivr cdn挂了解决方案、用unpkg来快速临时替代它

原始代码

    const assetsCDN = {
  // webpack build externals
  externals: {
    vue: 'Vue',
    'vue-router': 'VueRouter',
    vuex: 'Vuex',
    axios: 'axios'
  },
  css: [],
  // https://unpkg.com/browse/vue@2.6.10/
  js: [
    '//cdn.jsdelivr.net/npm/vue@2.6.14/dist/vue.min.js',
    '//cdn.jsdelivr.net/npm/vue-router@3.5.1/dist/vue-router.min.js',
    '//cdn.jsdelivr.net/npm/vuex@3.1.1/dist/vuex.min.js',
    '//cdn.jsdelivr.net/npm/axios@0.21.1/dist/axios.min.js'
  ]
}

改成

const assetsCDN = {
  // webpack build externals
  externals: {
    vue: 'Vue',
    'vue-router': 'VueRouter',
    vuex: 'Vuex',
    axios: 'axios'
  },
  css: [],
  // https://unpkg.com/browse/vue@2.6.10/
  js: [
    '//unpkg.com/vue@2.6.14/dist/vue.min.js',
    '//unpkg.com/vue-router@3.5.1/dist/vue-router.min.js',
    '//unpkg.com/vuex@3.1.1/dist/vuex.min.js',
    '//unpkg.com/axios@0.21.1/dist/axios.min.js'
  ]
}

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