导出 * as bar VS 导出 { 默认为 bar }

Question

两者有什么区别

export * as bar from 'foo'

和

export { default as bar } from 'foo'

---

在我的具体情况下，我尝试了以下两种方法，它们都有效，想知道它们之间的根本区别。

// echarts v5.0.0
export * as ECharts from 'echarts/lib/echarts.js'
export { default as ECharts } from 'echarts/lib/echarts.js'

babel.config.js

module.exports = {
  // "@vue/cli-plugin-babel": "~4.5.0",
  presets: ['@vue/cli-plugin-babel/preset'],
}

Answer 1

这会将所有命名导出和默认导出foo导出为bar：

export * as bar from 'foo'

这仅导出默认导出为foo：bar

export { default as bar } from 'foo'