tw-merge/dist/lib/create-lru-cache.mjs

Merge CSS utility classes without style conflicts - small and zero config

// LRU cache inspired from hashlru (https://github.com/dominictarr/hashlru/blob/v1.0.4/index.js) but object replaced with Map to improve performance
function createLruCache(maxCacheSize) {
  if (maxCacheSize < 1) return {
    get: function get() {
      return undefined;
    },
    set: function set(_, value) {
      return value;
    }
  };
  var cacheSize = 0;
  var cache = new Map();
  var previousCache = new Map();
  function update(key, value) {
    cache.set(key, value);
    cacheSize++;
    if (cacheSize > maxCacheSize) {
      cacheSize = 0;
      previousCache = cache;
      cache = new Map();
    }
  }
  return {
    get: function get(key) {
      var value = cache.get(key);
      if (value !== undefined) return value;
      if ((value = previousCache.get(key)) !== undefined) {
        update(key, value);
        return value;
      }
    },
    set: function set(key, value) {
      if (cache.has(key)) cache.set(key, value);else update(key, value);
      return value;
    }
  };
}

export { createLruCache };
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