Reg(X)en

Generate random strings that match a given regular expression.

Install

npm install regxen

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Use

import RegXen from "regxen";

const rgxn = new RegXen(/(?<emoji>[\u{1F919}\u{1F91A}\u{1F91E}])(he[yi]l+(o|O|ö){1,2})\k<emoji>/v)
rgxn.generate(); // -> '🤞heillllllllöO🤞'
rgxn.generate(); // -> '🤞heylllllöö🤞'
rgxn.generate(); // -> '🤚heilllllllöO🤚'
rgxn.generate(); // -> '🤙heilllllö🤙'

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Repeatable sequences

The underlying random number generator can be be seeded allowing for reliably repatable sequences.

const rgxn = new RegXen(/\p{Emoji/v);
rgxn.setSeed("🍀");
rgxn.generate() // -> '🕹'
rgxn.generate() // -> '🧃'
rgxn.generate() // -> '🥹'
rgxn.setSeed("🍀");
rgxn.generate() // -> '🕹'
rgxn.generate() // -> '🧃'
rgxn.generate() // -> '🥹'