Benchmark: typeof === function VS function empty

Script Preparation code:

var temp = () => {
	return;
}

Tests:

function
temp();
if typeof == function
if (typeof(temp) === "function") temp();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
function
if typeof == function

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark JSON and explain what's being tested.

**Benchmark Definition**
The benchmark is designed to compare two approaches: calling a function directly (`temp();`) versus using an `if` statement with the `typeof` operator (`if (typeof(temp) === \"function\") temp();`).

**Options Compared**

1. **Direct Function Call**: `temp();`
	* Pros:
		+ Simple and straightforward.
		+ Can be more efficient, as it avoids the overhead of an `if` statement.
	* Cons:
		+ May not work correctly if the function is not defined or returns a non-function value (e.g., `undefined`, `null`, etc.).
2. **typeof Operator with Function Call**: `if (typeof(temp) === \"function\") temp();`
	* Pros:
		+ Provides more robustness, as it checks if the expression `temp` is a function before calling it.
	* Cons:
		+ May be slower due to the additional overhead of the `typeof` operator and the conditional statement.

**Library Used**
None are mentioned in this specific benchmark. However, libraries like Lodash or Ramda might use similar patterns for functional programming or utility functions.

**Special JS Feature/Syntax**
There is no special JavaScript feature or syntax being tested in this benchmark. It's a straightforward comparison of two basic function invocation techniques.

**Other Alternatives**

If you wanted to add more alternatives to the benchmark, here are some ideas:

* Direct Function Call with Optional Argument: `temp( arg );`
* typeof Operator with Function Call and Optional Argument: `if (typeof(temp) === \"function\") temp(arg);`
* Using a Function Expression: `(function() { return; }());`
* Using an Immediately Invoked Function Expression (IIFE): `(function() { return; })();`

These additional alternatives would allow you to test the performance impact of different function invocation patterns, including those that involve optional arguments or IIFEs.

The benchmark provides valuable insights into the performance characteristics of these two function invocation techniques. By comparing them, developers can make informed decisions about which approach is best suited for their specific use cases and performance requirements.

Related benchmarks:

typeof === function VS function empty (version: 0)

Comparing performance of: function vs if typeof == function

Created: 4 years ago by: Guest

Jump to the latest result

function

if typeof == function

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):