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/*! * Module requirements */
'use strict';
const MongooseError = require('./mongooseError');const getConstructorName = require('../helpers/getConstructorName');const util = require('util');const combinePathErrors = require('../helpers/error/combinePathErrors');
class ValidationError extends MongooseError {  /**   * Document Validation Error   *   * @api private   * @param {Document} [instance]   * @inherits MongooseError   */  constructor(instance) {    let _message;    if (getConstructorName(instance) === 'model') {      _message = instance.constructor.modelName + ' validation failed';    } else {      _message = 'Validation failed';    }
    super(_message);
    this.errors = {};    this._message = _message;
    if (instance) {      instance.$errors = this.errors;    }  }
  /**   * Console.log helper   */  toString() {    return this.name + ': ' + combinePathErrors(this);  }
  /**   * inspect helper   * @api private   */  inspect() {    return Object.assign(new Error(this.message), this);  }
  /**  * add message  * @param {String} path  * @param {String|Error} error  * @api private  */  addError(path, error) {    if (error instanceof ValidationError) {      const { errors } = error;      for (const errorPath of Object.keys(errors)) {        this.addError(`${path}.${errorPath}`, errors[errorPath]);      }
      return;    }
    this.errors[path] = error;    this.message = this._message + ': ' + combinePathErrors(this);  }}

if (util.inspect.custom) {  // Avoid Node deprecation warning DEP0079  ValidationError.prototype[util.inspect.custom] = ValidationError.prototype.inspect;}
/** * Helper for JSON.stringify * Ensure `name` and `message` show up in toJSON output re: gh-9847 * @api private */Object.defineProperty(ValidationError.prototype, 'toJSON', {  enumerable: false,  writable: false,  configurable: true,  value: function() {    return Object.assign({}, this, { name: this.name, message: this.message });  }});

Object.defineProperty(ValidationError.prototype, 'name', {  value: 'ValidationError'});
/*! * Module exports */
module.exports = ValidationError;