Build a Regex Engine in Less than 40 Lines of Code
Regex has a bad reputation in many developer eyes. But in fact, building a simple regex engine wasn’t that hard and a way to help us to not be afraid of using regex. The engine we built supports many syntax: a, *, ?, ., ^, $.
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The regex literals optimization avoids running the regex engine on parts of the input text that...The regex literals optimization avoids running the regex engine on parts of the input text that cannot possibly ever match the regex. An example of a regex this can be applied to is \w+@\w+\.\w+, where the algorithm quickly finds the first @, then matches \w+ backwards to find the start of the match, and then matche...
New in Firefox 78: DevTools improvements, new regex engine, and abundant web platform updates – Mozilla Hacks - the Web developer blog
New in Firefox 78: DevTools Improvements and Abundant Web Platform Updates — Version 78 landed yesterday,...New in Firefox 78: DevTools Improvements and Abundant Web Platform Updates — Version 78 landed yesterday, bringing with it a new regex engine, updates to the ECMAScript Intl API, new CSS selectors, enhanced support for WebAssembly, and many improvements to the dev tools. These are the highlights, but if you want to dig into the full list of developer-facing changes, that’s here.