eslint-plugin-better-tailwindcss/lib/async-utils/regex.js

auto-wraps tailwind classes after a certain print width or class count into multiple lines to improve readability.

const REGEX_CACHE = new Map();
const MAX_CACHE_SIZE = 500;
function getRegexCacheKey(pattern, flags) {
    return `${flags}\u0000${pattern}`;
}
export function getCachedRegex(patternOrRegex, flags) {
    const regexFlags = typeof patternOrRegex === "string"
        ? flags ?? ""
        : patternOrRegex.flags;
    const regexPattern = typeof patternOrRegex === "string"
        ? patternOrRegex
        : patternOrRegex.source;
    const cacheKey = getRegexCacheKey(regexPattern, regexFlags);
    let regex = REGEX_CACHE.get(cacheKey);
    if (!regex) {
        if (REGEX_CACHE.size >= MAX_CACHE_SIZE) {
            const firstKey = REGEX_CACHE.keys().next().value;
            if (firstKey !== undefined) {
                REGEX_CACHE.delete(firstKey);
            }
        }
        regex = typeof patternOrRegex === "string"
            ? new RegExp(patternOrRegex, flags)
            : patternOrRegex;
        REGEX_CACHE.set(cacheKey, regex);
    }
    if (regex.global || regex.sticky) {
        regex.lastIndex = 0;
    }
    return regex;
}
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