number-partitioner/cache.js at master · Restuta/number-partitioner · GitHub

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const Immutable = require("immutable");

const SimpleObjectCache = {
  init() {
    let cache = {};

    return {
      hits: 0,
      set(key, value) {
        cache[key] = value;
      },
      get(key) {
        this.hits++;
        return cache[key];
      },
      has(key) {
        return !!cache[key];
      }
    };
  }
};

const ImmutableListCache = {
  init() {
    let map = Immutable.Map();

    return {
      hits: 0,
      set(key, value) {
        map = map.set(key, value);
      },
      get(key) {
        this.hits++;
        return map.get(key);
      },
      has(key) {
        return map.has(key);
      }
    };
  }
};

//export default SimpleObjectCache;
module.exports = ImmutableListCache;