21-searotating_utils v1.0.0

(1) 新建 lib/math export function sum(num1, num2) { return num1 + num2; } export function mul(num1, num2) { return num1 * num2; }

(2) 新建 lib/format.js export function dateFormat() { return "2022-03-09" }

(3) 新建 index.js import as math from './lib/math' import as format from './lib/format'

export { math, format } (4) 在当前项目下生成一个 package.json 文件 --- npm init

(4) 登录 npm 账号(用户名：searotating;邮箱：2206162221@qq.com;密码：searotating1314)