async-validator.js数据校验器

文档：

• https://www.npmjs.com/package/async-validator
• https://github.com/yiminghe/async-validator

安装

npm i async-validator

示例

// demo.mjs
// node(v16.14.0)

// import Schema from 'async-validator';

// fix: 文档给出的引入方式报错
import asyncValidator from 'async-validator';
const Validator = asyncValidator.default;

// 定义校验规则
const rules = {
    
    
  name: {
    
    
    type: 'string',
    required: true,
    validator: (rule, value) => value === 'muji',
  },
  age: {
    
    
    type: 'number',
    asyncValidator: (rule, value) => {
    
    
      return new Promise((resolve, reject) => {
    
    
        if (value < 18) {
    
    
          reject('too young'); // reject with error message
        } else {
    
    
          resolve();
        }
      });
    },
  },
};

const validator = new Validator(rules);

let data = {
    
     name: 'Tom', age: 16 };

validator
  .validate(data)
  .then(() => {
    
    
    // validation passed or without error message
    console.log('validate passed');
  })
  .catch(({
     
      errors, fields }) => {
    
    
    console.log(errors, fields);
  });

打印出的校验信息

[
  {
    
     message: 'name fails', fieldValue: 'Tom', field: 'name' },
  {
    
     message: 'too young', fieldValue: 16, field: 'age' }
] {
    
    
  name: [ {
    
     message: 'name fails', fieldValue: 'Tom', field: 'name' } ],
  age: [ {
    
     message: 'too young', fieldValue: 16, field: 'age' } ]
}

rule的属性

type
required
pattern
len
enum
min/max

可以使用的 Type

类型	描述
string	Must be of type string. This is the default type.
number	Must be of type number.
boolean	Must be of type boolean.
method	Must be of type function.
regexp	Must be an instance of RegExp or a string that does not generate an exception when creating a new RegExp.
integer	Must be of type number and an integer.
float	Must be of type number and a floating point number.
array	Must be an array as determined by Array.isArray.
object	Must be of type object and not Array.isArray.
enum	Value must exist in the enum.
date	Value must be valid as determined by Date
url	Must be of type url.
hex	Must be of type hex.
email	Must be of type email.
any	Can be any type.