Javascript 在 Node.js 中包含来自外部文件的 es6 类
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Include es6 class from external file in Node.js
提问by Bald Bantha
Say I have a file class.js:
说我有一个文件class.js：
class myClass {
constructor(arg){
console.log(arg);
}
}
And I wanted to use the myClassclass in another file. How would I go about this?
I've tried:var myClass = require('./class.js');
But it didn't work.
I've looked at module.exportsbut haven't found an example that works for es6 classes.
我想myClass在另一个文件中使用这个类。我该怎么办？
我试过：var myClass = require('./class.js');
但是没有用。
我看过module.exports但还没有找到适用于 es6 类的示例。
回答by baao
Either do
要么做
module.exports = class MyClass {
constructor(arg){
console.log(arg);
}
};
and import with
并导入
var a = require("./class.js");
new a("fooBar");
or use the newish syntax (may require you to babelify your code first)
或使用新语法（可能需要您先对代码进行 babelify）
export class MyClass {
constructor(arg){
console.log(arg);
}
};
and import with
并导入
import {myClass} from "./class.js";
回答by Abe Clark
export default class myClass {
constructor(arg){
console.log(arg);
}
}
Other file:
其他文件：
import myClass from './myFile';
