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Extending CircleCI's API with a Custom Microservice on AWS Lambda

There’s a lot to love about CircleCI. First of all, continuous integration is just awesome in general. You can certainly develop fine software without it, but a good CI configuration can really make your life easier. Beyond that, CircleCI has a generous free tier, provides four free containers per open source project, allows the use of custom Docker images, and is reasonably easy to configure. There’s unfortunately also some stuff not to love about CircleCI.

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Running Selenium with Headless Firefox

Update: This article is regularly updated in order to accurately reflect improvements in Firefox’s headless browsing capabilities. Note: Check out Running Selenium with Healdess Chrome if you’d rather use Google’s browser. Using Selenium with Headless Firefox (on Windows) Ever since Chrome implemented headless browsing support back in April, the other major browsers started following suit. In particular, Mozilla has since then expanded support for Firefox’s headless mode from Linux to its Windows and macOS builds, and fixed a number of bugs that might have been in the way of early adopters.

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Implementing a Custom Waiting Action in Nightmare JS

Nightmare is a popular browser automation library specifically designed with ease of use in mind. A typical Nightmare script chains together semantically named user actions like goto and click to perform any given task, resulting in simple and readable code. These actions of course include a few methods for waiting on the page to fully load: you can wait for a selector to become available, for all static resources to load, or simply wait for a fixed amount of time.

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