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React 16 Tooling
book

React 16 Tooling

by Adam Boduch, Christopher Pitt
April 2018
Intermediate to advanced content levelIntermediate to advanced
298 pages
6h 34m
English
Packt Publishing
Content preview from React 16 Tooling

Time travel debugging

One requirement of reducer functions in Redux is that they're pure; that is, they only return new data as opposed to mutating existing data. One consequence of this is that it enables time travel debugging. Because nothing ever changes, you can move the state of your application forward, backward, or to an arbitrary point in time. The Redux DevTools make this easy to do.

To see time travel debugging in action, let's type some filter text into the filter input box:

Looking at the actions in Redux DevTools, you should see something along these lines:

I've selected the last SET_FILTER_VALUE action that was dispatched. The ...

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Publisher Resources

ISBN: 9781788835015Supplemental Content