Promises, handlers, and chains are foundations of modern JavaScript, but they can be tricky. Here are four common traps to ...

In node-fetch, a function to check whether an origin was trustworthy ... In this case, CloudFlare was trying to use this regular expression to block inline JavaScript. While it isn't made particularly ...

The evaluate method takes two parameters: the expression to evaluate and an optional context object that contains variables and functions used in the expression.

which works by transpiling the given reg-ular expression to a JavaScript function that recognises its expansions. We demonstrate the usefulness of Rexstepper by successfully using it to troubleshoot a ...

Compiles expressions from strings to plain JS functions Safe to use with user generated expressions (e.g. as a filter language) Use in the browser or with Node.js Ideally, the expression should be pre ...