podeng/validator/errors/PodengError.js

Simple JSON value normalization to make everything gone right.

'use strict';

const PodengError = function (options) {
  options = options || {};

  this.name = options.name || 'PodengError';
  this.message = options.message;
  this.details = options.details;
  this.cause = options.cause;

  this._err = new Error();
  this.chain = this.cause ? [this].concat(this.cause.chain) : [this];
};

PodengError.prototype = Object.create(Error.prototype, {
  constructor: {
    value: PodengError,
    writable: true,
    configurable: true
  }
});

Object.defineProperty(PodengError.prototype, 'stack', {
  get: function stack () {
    return (
      this.name +
      ': ' +
      this.message +
      '\n' +
      this._err.stack.split('\n').slice(2).join('\n')
    );
  }
});

Object.defineProperty(PodengError.prototype, 'why', {
  get: function why () {
    let _why = this.name + ': ' + this.message;
    for (var i = 1; i < this.chain.length; i++) {
      var e = this.chain[i];
      _why += ' <- ' + e.name + ': ' + e.message;
    }
    return _why;
  }
});

/**
 * How to Use
 */
// function fail() {
//     throw new PodengError({
//         name: 'BAR',
//         message: 'I messed up.'
//     });
// }

// function failFurther() {
//     try {
//         fail();
//     } catch (err) {
//         throw new PodengError({
//             name: 'FOO',
//             message: 'Something went wrong.',
//             cause: err
//         });
//     }
// }

// try {
//     failFurther();
// } catch (err) {
//     console.error(err.why);
//     console.error(err.stack);
//     console.error(err.cause.stack);
// }

module.exports = PodengError;