z-error/lib/ZError.js

* verify： 校验字段有效性，合法性。检验不通过返回ZError对象，否则返回null * ZError： 错误提示，继承Error。name表示错误名称，code表示错误码，message表示code对应的提示信息，description错误描述。status表示restful api 状态码 * setLocal：设置多语言错误对照码

'use strict';

const getMessage = require('./util').getMessage;
const config = require('./config');

class ZError extends Error {
  constructor(name = '', code = '', message = '', description = '', status = 200, lang = 'en'){
    super(message);
    Error.captureStackTrace(this, this.constructor);
    this.name = name;
    this.code = code;
    this.lang = lang;
    this.message = message || (code ? getMessage(code, config.lang || lang) : '') || code;
    this.description = description;
    this.status = status;
  }

  getMessage(lang){
    if(!this.code)
      return '';
    let tmpLang = lang || this.lang || config.lang;
    return getMessage(this.code, tmpLang);
  }
  
  toJson() {
    return {
      name: this.name,
      code: this.code,
      message: this.message,
      description: this.description,
      status: this.status,
    }
  }

  toJSON() {
    return this.toJson();
  }
}

module.exports = ZError;