Benchmark: isMarkdownURL2 - MeasureThat.net

Script Preparation code:

const isURL =
  /(https?:\/\/)?(www\.)?([-\w@:%.\\+~#=]{1,256}\.[a-z]{2,6}|http:\/\/localhost:\d{2,4})\b([-\w@:%\\+.~#?&/=]*)/;
const squareBrackets = /\[([^\]]+)\]/;

const reg = {
  isMarkdownURL: new RegExp(`^${squareBrackets.source}(\\(${isURL.source}\\))$`),
};

function isMarkdownURL(name) {
    // Check before proceeding
    if (!name.includes('[') || !name.includes(']')) return undefined;

    const isURL = name.match(reg.isMarkdownURL);
    if (!isURL) return undefined;

    const matchedURL = isURL[2]?.slice(1, isURL[2].length - 1).trim();
    if (!matchedURL) return undefined;

    const url = /^https?:\/\/|^mailto:/.test(matchedURL) ? matchedURL : `https://` + matchedURL;
    if (!isURL[1]) return undefined;

    return {
        name: isURL[1],
        url,
    };
}

function isMarkdownURL2(name) {
  // Check before proceeding
  if (!name.includes('[') || !name.includes(']')) return undefined;

  const isURL = reg.isMarkdownUrl.exec(name);
  if (!isURL?.[1]) return undefined;

  const matchedURL = isURL[2]?.slice(1, isURL[2].length - 1).trim();
  if (!matchedURL) return undefined;

  const url = /^https?:\/\/|^mailto:/.test(matchedURL) ? matchedURL : `https://` + matchedURL;

  return {
    name: isURL[1],
    url,
  };
}

Tests:

1
isMarkdownURL('[Testing wiki Resources](https://www.testing.com/support)') isMarkdownURL('[Testing wiki Resources(https://www.testing.com/support)') isMarkdownURL('Testing wiki Resources') isMarkdownURL('Testing wiki [Resources]') isMarkdownURL('A long piece of text goes here')
2
isMarkdownURL('[Testing wiki Resources](https://www.testing.com/support)') isMarkdownURL('[Testing wiki Resources(https://www.testing.com/support)') isMarkdownURL('Testing wiki Resources') isMarkdownURL('Testing wiki [Resources]') isMarkdownURL('A long piece of text goes here')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
1
2

Fastest: N/A

Slowest: N/A

Latest run results:

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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 and explain what's being tested.

**Benchmark Description**

The benchmark is designed to measure the performance of JavaScript code that detects markdown link URLs. Specifically, it tests how quickly the code can process different input strings to extract the URL from a markdown link.

**Options Compared**

There are two main options compared in this benchmark:

1. **`isMarkdownURL` function**: This is the original implementation provided by the test creator.
2. **`isMarkdownURL2` function**: This is an alternative implementation created by someone else (as evidenced by the "Created by" date in the benchmark definition).

**Pros and Cons of Each Approach**

### `isMarkdownURL` Function

Pros:

* Well-structured and easy to follow
* Uses a clear and concise regular expression to match the markdown link pattern

Cons:

* May be slower due to the use of `match()` method, which can lead to backtracking and slower performance for longer input strings.
* Does not handle invalid or malformed input as well as it could.

### `isMarkdownURL2` Function

Pros:

* Uses a more efficient approach by using the `exec()` method instead of `match()`, which is faster and more suitable for this type of pattern matching.
* Handles invalid or malformed input better, returning `undefined` immediately instead of attempting to process the input further.

Cons:

* May be less readable due to the use of a different syntax and variable names.
* Requires careful handling of edge cases, such as empty strings or null inputs.

**Other Considerations**

* Both implementations assume that the input string will always contain a markdown link pattern. If this assumption is not met, the code may return incorrect results or throw errors.
* The benchmark does not consider other factors that could affect performance, such as the specific JavaScript engine used by the browser or the amount of available memory.

**Library Used**

There is no explicit library mentioned in the benchmark definition. However, both implementations use regular expressions to match the markdown link pattern.

**Special JS Feature/Syntax**

None are explicitly mentioned in this benchmark. However, it's worth noting that the `exec()` method used in `isMarkdownURL2` has some advantages over `match()`, such as:

* Improved performance for longer input strings
* Better handling of edge cases

The `exec()` method is a part of the `RegExp` object and returns an array containing the matched string and any captured groups.

**Alternatives**

Other alternatives to these implementations could include:

* Using a dedicated markdown parsing library, such as Marked or Markdown-it
* Implementing a custom parser using a finite state machine or other algorithmic approach
* Utilizing a cloud-based service for markdown processing, such as GitHub's Markdown renderer

Keep in mind that each alternative has its own trade-offs and considerations, and the best approach will depend on the specific requirements of your project.

Related benchmarks:

isMarkdownURL2 (version: 0)

The fastest markdown link URL detection

Comparing performance of: 1 vs 2

Created: 3 years ago by: Registered User

Jump to the latest result

1

2

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):