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const install = function (Vue) {
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if (install.installed) return
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// 遍历注册全局组件
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let apps = []
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let contexts = require.context('.', true, /\.(\/.+)\/App[^\/]+\.vue$/)
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if (contexts) {
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contexts.keys().map(e => {
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if (contexts(e).default) {
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apps.push(contexts(e).default)
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Vue.component(contexts(e).default.name, contexts(e).default)
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}
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})
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}
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return Promise.resolve(apps)
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}
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// 判断是否是直接引入文件
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if (typeof window !== 'undefined' && window.Vue) {
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install(window.Vue)
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}
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export default {
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// 导出的对象必须具有 install，才能被 Vue.use() 方法安装
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install
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}
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