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                #### 問題描述: 通過 npm install 下載了topojson ,引入模塊使用的是:import topojson from 'topojson',這樣子會引入失敗,控制臺報錯提示找不到,但改用 var topojson = require("topojson")的形式就可以,即: ~~~ //錯誤 import topojson from 'topojson' //能正確導入 var topojson = require("topojson") ~~~ #### 原因分析: 去node_modules里面查看了topojson的源碼,發現模塊的暴露方式是export,而不是export default,所以正確的姿勢如下: ~~~ //正確姿勢 import * as topojson from 'topojson' ~~~ #### 后記: - 既然用require都能導入進來的模塊,用ES6的import肯定也是能導入進來的,錯誤的話肯定就是哪里姿勢不對 - 深入理解模塊的暴露方式、導入方式 - webpack具有requireJs和browserify的功能
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