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ES6 moduleのexportとimportについて

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本日のゴール

  • export / import について理解を深める

アジェンダ

  • export について
  • import について

1. export について

変数、関数、クラスの宣言文の先頭に export を付けると、その名前で外部ファイルにエクスポートすることができる

export const foo = foo => {
  console.log()
}

export default class bar {
  constructor() {}
  init() {}
}

2. import について

外部モジュールや他のスクリプトなどからエクスポートされた関数、オブジェクト、プリミティブをインポートするために使用

import foo from './foo'
import {foo, bar} from './foo'

参考

MDN - export
MDN - import

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