Function cacheHas

test-app/public/sinon.js:11658–11660

* Checks if a `cache` value for `key` exists. * * @private * @param {Object} cache The cache to query. * @param {string} key The key of the entry to check. * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.

(cache, key)

       * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
       */
      function cacheHas(cache, key) {
        return cache.has(key);
      }
    
      /**
       * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol