报错ReferenceError: require is not defined in ES module scope, you can use import instead与解决

math.js↓

const add = (x, y) => {
    return x + y
}

const minus = (x, y) => {
    return x - y
}

module.exports = {
    add,
    minus
}

server.js↓

const math = require('./math')
console.log(math.add(4, 5));

node运行server.js

报错ReferenceError: require is not defined in ES module scope, you can use import instead

import是ES6里的语法，但我想用commonjs
于是，初始化配置文件npm init -y得到package.json文件

{
  "name": "commonjs",
  "version": "1.0.0",
  "description": "",
  "main": "math.js",
  "scripts": {
    "test": "echo "Error: no test specified" && exit 1",
    "start": "node server.js"
  },
  "keywords": [],
  "author": "",
  "license": "ISC"
}

name为commonjs无误
重新执行server.js文件，可以正常执行