GitHub - slevithan/oniguruma-to-es: Convert patterns from Oniguruma (the regex flavor used by Ruby, TextMate grammars, etc.) to native JavaScript RegExp
“I think [Oniguruma-To-ES] is very wonderful” — K. Kosako, creator of Oniguruma Oniguruma is a regular expression engine written in C that's used in Ruby (via a fork named Onigmo), PHP (mb_ereg, etc.), TextMate grammars (used by VS Code, Shiki, etc. for syntax highlighting), and many other tools. Oniguruma-To-ES is an advanced Oniguruma to JavaScript regex translator that runs in the browser or th
GitHub - le0pard/re2js: RE2JS is the JavaScript port of RE2, a regular expression engine that provides linear time matching
RE2 is a regular expression engine designed to operate in time proportional to the size of the input, ensuring linear time complexity. RE2JS, on the other hand, is a pure JavaScript port of the RE2 library — more specifically, it's a port of the RE2/J library. JavaScript standard regular expression package, RegExp, and many other widely used regular expression packages such as PCRE, Perl and Pytho
JSで書かれたECMAScript RegExpパーサーの比較 | Memory ice cubes
OXCで正規表現パーサーを実装してるときに全部一通り読んでみて、みんな違ってみんな良いってなったので。 候補はこちらの3つ。 https://github.com/jviereck/regjsparser https://github.com/DmitrySoshnikov/regexp-tree https://github.com/eslint-community/regexpp かのAST Explorerでも、RegExp部門ではこの3つがリストにある。 AST explorer https://astexplorer.net/ 前提 ECMAScript本体だと、ESTreeというデファクトがあるけど、残念ながらRegExpにはない。 ESTreeでのRegExpの扱いはこんな感じで、ただの文字列でしかない。 interface RegExpLiteral <: Literal
GitHub - slevithan/regex: JS regexes + future. A template tag for readable, high-performance, native JS regexes with extended syntax, context-aware interpolation, and always-on best practices.
Regex+ (aka regex, based on its package and tag name) is a template tag that extends JavaScript regular expressions with key features that make regexes more powerful and dramatically more readable. It returns native RegExp instances that run with native performance, and can exceed the performance of regex literals you'd write yourself. It's also lightweight, supports all ES2025 regex features, has
A comprehensive guide to the dangers of Regular Expressions in JavaScript
I first heard about regular expression denial of service (ReDoS) vulnerabilities from GitHub's Dependabot. Several of my projects over the years have had dependencies that suffered from ReDoS vulnerabilities, and I would bet that if you've built any JavaScript project with dependencies, you've also come across this. This got me thinking; if there are vulnerable regular expressions in our dependenc
Regular expressions in JavaScript
Regular expressions in JavaScript By Adebayo Adams on May 11, 2023 The string is arguably the most essential data type in programming; every programming language and software in the world uses strings in one way or another. It enables humans to easily communicate with sophisticated programs and machines. One thing that would help you a lot as a programmer is understanding how to use and manipulate
JavaScriptで平仮名(ひらがな)を判定する - Qiita
regex = /*ここに何らかの正規表現*/; regex.test("あいうえお"); // -> true regex.test("あぁ"); // -> true regex.test("aiueo"); // -> false regex.test("あいueo"); // -> false regex.test("あい うえお"); // -> false
GitHub - pemistahl/grex-js: A JavaScript / WebAssembly library for generating regular expressions from user-provided test cases
grex is a library that is meant to simplify the often complicated and tedious task of creating regular expressions. It does so by automatically generating a single regular expression from user-provided test cases. The resulting expression is guaranteed to match the test cases which it was generated from. This project has started as a Rust port of the JavaScript tool regexgen written by Devon Govet
JSのウェブフレームワークで高速なルーターを実装する方法
https://nseg.connpass.com/event/251366/ での発表資料です。
A New RegExp Engine in SpiderMonkey – Mozilla Hacks - the Web developer blog
Background: RegExps in SpiderMonkey Regular expressions – commonly known as RegExps – are a powerful tool in JavaScript for manipulating strings. They provide a rich syntax to describe and capture character information. They’re also heavily used, so it’s important for SpiderMonkey (the JavaScript engine in Firefox) to optimize them well. Over the years, we’ve had several approaches to RegExps. Con
GitHub - mathiasbynens/emoji-regex: A regular expression to match all Emoji-only symbols as per the Unicode Standard.
emoji-regex offers a regular expression to match all emoji symbols and sequences (including textual representations of emoji) as per the Unicode Standard. It’s based on emoji-test-regex-pattern, which generates (at build time) the regular expression pattern based on the Unicode Standard. As a result, emoji-regex can easily be updated whenever new emoji are added to Unicode. Since each version of e
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GitHub - antfu/oniguruma-to-js: Covert Oniguruma-flavor Regexp to JavaScript native RegExp.
JavaScript 中 RegExp 與字串取代的神奇特性
GitHub - unjs/magic-regexp: A compiled-away, type-safe, readable RegExp alternative
GitHub - mathiasbynens/regexpu-core: regexpu’s core functionality, i.e. `rewritePattern(pattern, flag, options)`, which enables rewriting regular expressions that make use of the ES6 `u` flag into equivalent ES5-compatible regular expression patterns.
GitHub - bnjmnt4n/regjsgen: Generate regular expressions from regjsparser’s AST.
GitHub - jviereck/regjsparser: Parsing the JavaScript's RegExp in JavaScript.
Release v4.4.0 · slevithan/xregexp
Regular expressions in JavaScript: lookaround assertions by example
Regexly | Chipto