如何使用webpack为数组类型添加新功能

npm install webpack webpack-cli --save-dev

const path = require('path');

module.exports = {
  entry: './src/index.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'bundle.js'
  }
};

// utils.js

export function sum(arr) {
  return arr.reduce((a, b) => a + b, 0);
}

export function average(arr) {
  return sum(arr) / arr.length;
}

// index.js

import { sum, average } from './utils';

function max(arr) {
  return Math.max(...arr);
}

const numbers = [1, 2, 3, 4, 5];
console.log('Sum:', sum(numbers));
console.log('Average:', average(numbers));
console.log('Max:', max(numbers));

npx webpack