Benchmark: isMarkdownURL - 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 = 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,
    };
}

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):

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Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Definition**

The provided JSON represents a benchmark definition for a JavaScript function called `isMarkdownURL`. This function is designed to detect whether a given string contains a Markdown link URL. The function takes two main approaches:

1. **`isMarkdownURL2`**: This approach uses a regular expression (`reg.isMarkdownUrl`) to match Markdown links in the input string.
2. **No regex ( simple implementation)**: This approach uses a simpler implementation without using regular expressions.

**Comparison of Options**

There are three main options being compared:

1. **Regular Expressions (RegEx) with `isMarkdownURL`**: This option uses a custom regular expression to match Markdown links. RegEx is a powerful tool for pattern matching, but it can be slower and less efficient than other approaches.
2. **Simple Implementation without RegEx (no regex)**: This approach uses a simple string manipulation algorithm to detect Markdown links.
3. **Regular Expressions with `isMarkdownURL` variant**: This option uses the same regular expression as the `isMarkdownURL` function, but with some differences in the implementation.

**Pros and Cons of each Approach**

1. **RegEx with `isMarkdownURL`**:
	* Pros: Robust pattern matching, handles edge cases well.
	* Cons: Can be slower and less efficient due to the overhead of regular expressions.
2. **Simple Implementation without RegEx (no regex)**:
	* Pros: Faster and more efficient, easier to understand and maintain.
	* Cons: May not handle edge cases as well as RegEx-based approaches.
3. **RegEx with `isMarkdownURL` variant**:
	* Pros: Same performance as the original `isMarkdownURL` function.
	* Cons: May require additional maintenance effort due to changes in the implementation.

**Library and its Purpose**

The `RegExp` object is used in both `isMarkdownURL` variants. The `RegExp` object provides a way to search for patterns in strings using regular expressions.

**Special JS Features/Syntax**

There are no special JavaScript features or syntaxes being tested in this benchmark.

**Other Considerations**

1. **Performance**: The performance of the benchmarks is measured by the number of executions per second (ExecutionsPerSecond).
2. **Device and Browser Variability**: The tests are run on different devices (Desktop, Mac OS X 10.15.7) and browsers (Chrome 110), which helps to account for potential variations in behavior.

**Alternative Approaches**

Other alternatives to the `isMarkdownURL` function could include:

1. **Using a Markdown parsing library**: Instead of writing a custom regex-based implementation, a library like Marked or markdown-it could be used to parse Markdown links.
2. **Using a natural language processing (NLP) library**: An NLP library like Natural.js or spaCy could be used to extract URLs from text.
3. **Using a machine learning model**: A machine learning model trained on a dataset of Markdown links and non-links could be used to predict whether a given string contains a Markdown link URL.

These alternative approaches may offer better performance, accuracy, or maintainability than the custom `isMarkdownURL` function, but they would require additional development effort and resources.

Related benchmarks:

isMarkdownURL (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):