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
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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);
  });


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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' } ]
}

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rule的属性

type
required
pattern
len
enum
min/max
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可以使用的 Type