<JavaScript>
Code\n\n/**\n * @param {Function} fn\n * @param {Array} args\n * @param {number} t\n * @return {Function}\n */\nvar cancellable = function(fn, args, t) {\n  con
# Code\n```\n/**\n * @param {Function} fn\n * @param {Array} args\n * @param {number} t\n * @return {Function}\n */\nvar cancellable = function(fn, args, t) {\n  const timeoutId = setTimeout(function() {\n    fn.apply(null, args);\n  }, t);\n\n  const cancelFn = function() {\n    clearTimeout(timeoutId);\n  };\n\n  return cancelFn;\n};\n\n/**\n *  const result = []\n *\n *  const fn = (x) => x * 5\n *  const args = [2], t = 20, cancelT = 50\n *\n *  const start = performance.now() \n *\n *  const log = (...argsArr) => {\n *      const diff = Math.floor(performance.now() - start);\n *      result.push({"time": diff, "returned": fn(...argsArr))\n *  }\n *       \n *  const cancel = cancellable(log, args, t);\n *\n *  const maxT = Math.max(t, cancelT)\n *           \n *  setTimeout(() => {\n *     cancel()\n *  }, cancelT)\n *\n *  setTimeout(() => {\n *     console.log(result) // [{"time":20,"returned":10}]\n *  }, maxT + 15)\n */\n```
['JavaScript']