Last year we formed a team focused on using the growing number of new web APIs to build multimedia applications that push the edge of the web platform. Our main work in this area over the last 2 years has been with the wonderful team behind Scratch at MIT’s Lifelong Kindergarten Group (LLK), and with […]

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Today we’re launching Test262 Report to provide JavaScript developers with up-to-date information on the state of new and existing language features across implementations. Test262 Report is based on daily runs of Test262, the ECMA-262 (“ECMAScript” or “JavaScript”) test suite, in nightly builds of JavaScript engines, and visualizes at-a-glance status of feature implementation progress. Taking a […]

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Bocoup recently facilitated an update to the WebKit project’s interaction with Test262. In this article, I’ll cover what this means for the WebKit project and the JavaScript ecosystem, as well as what exactly has been done in the WebKit project to help make this process more repeatable. Test262 is a project maintained by Ecma’s TC39. […]

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Software development is a costly process. Requirements need to be gathered, decisions need to be made, and resources need to be scheduled to write the software. All of these steps require an investment of time and money to get a feature to the point where it starts bringing value to a business. After the feature […]

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Think of the last time you goofed up on the job. Maybe you forgot to clean out the microwave in the break room. Maybe you hit “Reply All” when you really meant “Reply.” Or maybe you nodded off during an all-hands meeting. Probably your mistake was a little less banal than any of that, but […]

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This is part one in a series on the intersection of module bundlers and testing frameworks. Our focus will be webpack and jest but the techniques explored here can be reused with other tools as well. Modern websites and applications are routinely built by combining hundreds of small JavaScript modules. In order to increase the […]

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If you’ve had any contact with JavaScript code, you’re probably very familiar with how to define and call functions, but are you aware of of how many different ways you can define a function? This is a common challenge of writing and maintaining tests in Test262—especially when a new feature comes into contact with any […]

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Illustration courtesy Matt McLaughlin. It is 9:18 AM on August 21, 2021. You have just finished eating your space-breakfast, and you’re ready to get back to work maintaining the web presence for Omni Consumer Products. After about an hour, you find your latest change fails an acceptance test. It turns out to be a bug […]

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Recently I saw a tweet about the relationship between values in JavaScript saying that greater or equals means nothing. The tweet reported the following results: null >= 0 // true null > 0 // false null == 0 // false My experience with the JavaScript language makes me believe that everything has a meaning, even […]

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Sometimes I’m not satisfied with the way things are. I wish they could be a little bit different, just for a moment. I deal with this desire in my personal life by sighing and gazing through a rain-dotted window. When writing code, I take a more productive approach: I use seams. During application development, there […]

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