moltres-utils/dist/data/cacheChain.js

Utils for Moltres apps

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _ramda = require("ramda");

const makeCacheChain = () => ({
  strongMap: new Map(),
  weakMap: new WeakMap()
});

const makeCacheLink = () => ({
  ref: {},
  cacheChain: makeCacheChain()
});

const isWeakKey = (0, _ramda.is)(Object);

const setCacheKey = (cacheChain, key, value) => {
  if (isWeakKey(key)) {
    return cacheChain.weakMap.set(key, value);
  }

  return cacheChain.strongMap.set(key, value);
};

const getCacheKey = (cacheChain, key) => {
  if (isWeakKey(key)) {
    return cacheChain.weakMap.get(key);
  }

  return cacheChain.strongMap.get(key);
};

const linkCacheKey = (cacheChain, key) => {
  let link = getCacheKey(cacheChain, key);

  if (!link) {
    link = makeCacheLink();
    setCacheKey(cacheChain, key, link);
  }

  return link;
};

const cache = makeCacheChain();

const cacheChain = (...args) => {
  let chain = cache;
  let link = linkCacheKey(chain);
  (0, _ramda.forEach)(arg => {
    link = linkCacheKey(chain, arg);
    chain = link.cacheChain;
  }, args);
  return link.ref;
};

var _default = cacheChain;
exports.default = _default;
//# sourceMappingURL=cacheChain.js.map