Overview of the Benchmark

The provided JSON represents a JavaScript microbenchmark created on MeasureThat.net. The benchmark tests two different implementations of a function parseConsumerDisplayName, which takes three string parameters: firstName, middleName, and lastName. The goal is to determine which implementation is faster.

Test Cases

There are only two test cases:

1. Old: This implementation uses the original code provided in the benchmark definition, with no modifications.

const parseConsumerDisplayName = (firstName, middleName, lastName) => {
  const fullName = [lastName, firstName, middleName]
    .filter(Boolean)
    .join(' ')
    .substr(0, 26);

  const givenNames = fullName.substring(lastName.length, fullName.length);

  return [givenNames, lastName].join(' ');
};

2. New: This implementation is a modified version of the original code, with changes to improve performance.

const parseConsumerDisplayName = (firstName, middleName, lastName) => {
  const lastNameLength = lastName.length;
  const givenNames = [firstName, middleName]
    .filter(Boolean)
    .join(' ')
    .substr(0, 26 - lastNameLength);

  return [givenNames, lastName].join(' ');
};

Comparison of Options

The two implementations differ in the way they calculate givenNames. The Old implementation uses a substring operation to extract givenNames, while the New implementation uses a different approach with a subtraction-based optimization.

Pros and Cons:

• Old:
  • Pros: Simple and easy to understand.
  • Cons: May be slower due to the substring operation.
• New:
  • Pros: Optimized for performance, potentially faster than the Old implementation.
  • Cons: More complex code, which may make it harder to understand.

Other Considerations

The benchmark uses a JavaScript engine (Chrome 85) and runs on a desktop platform with macOS 10.15.6. The parseConsumerDisplayName function is designed to extract the first name from a full name, taking into account middle names.

Libraries and Special Features

There are no libraries used in this benchmark. However, it's worth noting that some JavaScript engines or browsers may have specific optimizations or features that could affect the performance of this code (e.g., const propagation or String.prototype.substr() optimization).

Alternatives

If you wanted to write a similar benchmark, you could consider using other test frameworks like JSMbench or Benchmark.js. MeasureThat.net is specifically designed for JavaScript microbenchmarks, and its UI provides a convenient way to run and compare multiple tests.

In terms of alternatives for writing the parseConsumerDisplayName function itself, you could explore other approaches, such as:

• Using a more efficient algorithm for extracting first names from full names.
• Implementing a caching mechanism to store intermediate results.
• Utilizing parallel processing or concurrency to improve performance.