Easy JS Solution | No Explanation Required | Clean Code
\n# 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 
\n# 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 timeout = setTimeout(()=>{\n        fn(...args);\n    },t)\n    return cancel=()=>{\n        clearTimeout(timeout);\n    }\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']