twitch-toolkit/examples/webhook-notifications/node_modules/winston-transport/test/fixtures/simple-transport.js

A set of tools to integrate with Twitch API, Twitch Chat and Twitch WebHooks.

'use strict';

const TransportStream = require('../../');
const util = require('util');

/**
 * !!! HERE BE DRAGONS !!!
 *
 * Constructor function for the SimpleTransport which we use for
 * testing purposes. It breaks all the established rules and
 * conventions for testing edge cases. You SHOULD NOT use this
 * as an example for how to write a custom `winston` Transport.
 *
 * @param  {Object} opts Configuration for this instance
 */
const SimpleTransport = module.exports = function (opts) {
  TransportStream.call(this, opts);

  //
  // Remark: we literally accept levels for TESTING PURPOSES only.
  // In `winston` these levels will always inherit from the Logger
  // we are piped to.
  //
  this.levels = opts.levels;
  this.stream = opts.stream;
  this.streams = opts.streams;
};

util.inherits(SimpleTransport, TransportStream);

/**
 * Writes to one of the streams associated with this instance.
 *
 * @param  {Info} info Winston log information
 * @param  {Function} callback Continuation to respond to when complete
 */
SimpleTransport.prototype.log = function (info, callback) {
  const stream = (this.streams && this.streams[info.level]) || this.stream;
  stream.write(JSON.stringify(info));
  this.emit('logged');
  callback();
};

/**
 * Emits a custom close event for the purposes of testing
 */
SimpleTransport.prototype.close = function () {
  var self = this;
  setImmediate(function () {
    self.emit('closed:custom');
  });
};