bugs in downloaded project zip file

As of 2017-07-31 the zip file containing the project source code contains bugs that cause the app to not work correctly.

Downloaded file: 1-getting-started-with-redux.zip

I scanned over several of the versions of the project from this zip file and they all had the same bugs.

These are the same bugs I saw in the React Webpack course: https://teamtreehouse.com/community/the-initial-downloaded-code-for-video-2-has-multiple-bugs

These bugs include:

1. method componentDidMount of Stopwatch uses setInterval without a delay argument. This behavior doesn't seem well-documented by MDN and doesn't seem discussed much on the web. In Firefox (55) the timer fires once and stops rather than repeating

2. method getInitialState of Stopwatch has a misspelled key previouseTime which causes the stopwatch to not work

You might have to deal with clearing the browser cache to changed code to run

Buggy version of (1):

const Stopwatch = React.createClass({
  getInitialState: function () {
    return ({
      running: false,
      previouseTime: 0,
      elapsedTime: 0,
    });
  },

Corrected version of (1)

const Stopwatch = React.createClass({
  getInitialState: function () {
    return ({
      running: false,
      previousTime: 0,
      elapsedTime: 0,
    });
  },

Buggy version of (2)

  componentDidMount: function () {
    this.interval = setInterval(this.onTick);
  },

A corrected version of (2)

  componentDidMount: function () {
    this.interval = setInterval(this.onTick, 100);
  },