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ECMAScript 6

Automatically Creating Github Issues Using

I am the co-organizer of the BeerJS meetings for TahoeJS. BeerJS is a casual meetup for JavaScript developers that has chapters all over the world. Our meetup is largely organized using a Github repo. As co-organizer, one of my monthly tasks is to create a Github issue for the upcoming meeting. The issue announces the…

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React Native 45 Errors in Jest

At, a co-worker and I are in the process of updating our app to the most recent version of React Native, 0.45.1. We’re currently working to fix up our tests in Jest and I thought I’d share with you some issues that we’ve discovered.

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Adding Support for ES2015 Number Methods to iOS 8

At, I’m working on an e-commerce app using React Native. React Native allows us to write apps in JavaScript that can run on iOS and Android phones with near native performance. The other day, we received several crash reports from users running iOS 8. All of the reports involved method calls on JavaScript’s global…

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Handling a Null Response from an API

I’ve been working with React Native lately, which uses the Fetch API for asynchronously fetching data from web services. Recently, I came across a really strange error. Certain calls (in particular, calls to fetch data for new users) would cause an error, “Unexpected end of JSON”.

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Sorting Arrays with JavaScript iterators

A lot of front-end web development involves displaying sorted lists on a page and maintaining the state and logic of the list. These sorted lists may be things like a list of products or an employee directory. Often, we will give the user the ability to re-sort the list or sort by a different key.…

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