Webpack在ES5中生成箭头功能 [英] Webpack generates arrow function in ES5

问题描述

我想使用TypeScript模块并通过Webpack捆绑它们.这是我的配置文件:

I want to use TypeScript modules and bundle them via Webpack. Here are my config files:

webpack.config.js:

const path = require('path');

module.exports = () => {
    return {
        entry: './index.ts',
        output: {
            filename: 'bundle.js',
            path: path.resolve(__dirname, 'dist'),
        },
        module: {
            rules: [{
                test: /\.tsx?$/,
                use: 'ts-loader',
                exclude: /node_modules/,
            }],
        },
    };
};

tsconfig.json:

{
  "compilerOptions": {
    "module": "commonjs",
    "target": "es3"
  },
  "include": ["./**/*"],
  "exclude": ["node_modules/**/*", "webpack.config.js"]
}

也许我从文档中弄错了.目的是在ES5(甚至更早)中生成代码.但是，这是我的捆绑文件:

Maybe I got something wrong from the documentation. The aim was to generate code in ES5 (or even earlier). But here is my bundled file:

(()=>{var n=function(n,o){console.warn(o)};n(0,0),n(0,1)})();

它具有箭头功能，该功能已在ES6中添加.我很困惑.我该如何摆脱呢?

It has an arrow function, which was added in ES6. I am confused. How can I get rid of that?

这是我尝试编译的代码:

Here's the code I try to compile:

const func = (foo, bar: number) => {
    console.warn(bar);
};

func(0, 0);
func(2, 1);

此外，我在生产模式下运行编译过程.(idk，也许这是有用的信息)

Also, I run the compilation process in production mode. (idk, maybe that's useful information)

推荐答案

决定只是在Webpack配置中添加 target:['web'，'es5'] .

The decision is simply adding target: ['web', 'es5'] to your webpack configuration.

您还可以设置 target:'es5'，但是在这种情况下，存在一些问题.至少就我而言，未指定"Web"的情况下，TerserWebpackPlugin拒绝在生产模式下压缩文件.

You could also set target: 'es5', but in this case, there are some problems. At least in my case without specifying 'web' TerserWebpackPlugin refused to compress files in the production mode.

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