Let's break down the provided benchmark and its options.

What is being tested?

The benchmark is testing two string comparison methods: startsWith and includes. The test cases are comparing the performance of these two methods when there is no match in the string.

Options compared

The two options being compared are:

1. startsWith: This method checks if the string starts with a specified substring.
2. includes: This method checks if the string contains a specified substring.

Pros and Cons

• startsWith:
  • Pros: Can be faster when the search pattern is at the beginning of the string, as it only needs to traverse a small portion of the string.
  • Cons: May be slower for strings that contain the search pattern in the middle or at the end.
• includes:
  • Pros: More flexible and can find the substring anywhere in the string, not just at the beginning.
  • Cons: May be slower than startsWith when the search pattern is near the beginning of the string.

Library usage

There doesn't seem to be any library used in this benchmark. The test cases are using built-in JavaScript methods (startsWith and includes) without any additional dependencies.

Special JS feature or syntax

None mentioned.

Benchmark preparation code

The script preparation code is empty, which means that the benchmarking framework will likely generate a random string for testing.

Other alternatives

If this benchmark were to test different approaches, some alternatives could be:

• Using regular expressions (e.g., RegExp.test)
• Using a custom implementation of the comparison method
• Testing the performance of different browsers or environments

However, since the focus is on comparing startsWith and includes, these alternative approaches might not provide additional insights.

In summary, this benchmark tests the performance difference between two string comparison methods: startsWith and includes. The test cases are designed to find the substring "bonjour" in a random string.