Joi 强大的 JS 数据验证库

Joi 是用于 JavaScript 的强大的模式描述语言和数据验证器，让你可以使用简单、直观且可读的语言来描述数据。

示例：

const Joi = require('joi');const schema = Joi.object({    username: Joi.string()        .alphanum()        .min(3)        .max(30)        .required(),    password: Joi.string()        .pattern(new RegExp('^[a-zA-Z0-9]{3,30}$')),    repeat_password: Joi.ref('password'),    access_token: [        Joi.string(),        Joi.number()    ],    birth_year: Joi.number()        .integer()        .min(1900)        .max(2013),    email: Joi.string()        .email({ minDomainSegments: 2, tlds: { allow: ['com', 'net'] } })})    .with('username', 'birth_year')    .xor('password', 'access_token')    .with('password', 'repeat_password');schema.validate({ username: 'abc', birth_year: 1994 });// -> { value: { username: 'abc', birth_year: 1994 } }schema.validate({});// -> { value: {}, error: '"username" is required' }// Also -try {    const value = await schema.validateAsync({ username: 'abc', birth_year: 1994 });}catch (err) { }