voxa/src/errors/index.ts

A fsm (state machine) framework for Alexa, Dialogflow, Facebook Messenger and Botframework apps using Node.js

/*
 * Copyright (c) 2018 Rain Agency <contact@rain.agency>
 * Author: Rain Agency <contact@rain.agency>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

export { OnSessionEndedError } from "./OnSessionEndedError";
export { NotImplementedError } from "./NotImplementedError";
export { TimeoutError } from "./TimeoutError";
export { errorHandler } from "./handler";
export { SSMLError } from "./SSMLError";

function createError(messageTemplate: string, key: string) {
  return class extends Error {
    public name: string = key;
    [key: string]: any;

    constructor(value: string) {
      super(messageTemplate.replace("{" + key + "}", value));
      this[key] = value;
    }
  };
}

export const UnknownState = createError("Unknown state {state}", "state");
export const UnknownRequestType = createError(
  "Unknown request type: {requestType}",
  "requestType",
);