Overview of the Benchmark

The provided JSON represents a JavaScript microbenchmark that compares two approaches to set an object property: Lodash's set function and dot notation (also known as property setter) in plain JavaScript.

What is tested?

The benchmark tests the performance of two different methods:

1. Lodash's set function: This method uses the popular utility library Lodash to set a specific property on an object.
2. Dot notation (property setter): This method uses the dot notation syntax (person.age = 10) to directly set a property on the person object.

Options compared

The benchmark compares the performance of these two methods:

• Lodash's set function
• Dot notation (property setter) in plain JavaScript

Pros and Cons of each approach:

1. Lodash's set function:
   • Pros:
     • More readable and maintainable code, as it clearly expresses the intention of setting a property.
     • Less error-prone, as it abstracts away some of the complexity of directly accessing an object property.
   • Cons:
     • Adds an additional dependency on Lodash (the library).
     • May introduce overhead due to the library's functionality.
2. Dot notation (property setter):
   • Pros:
     • Faster, as it doesn't require a function call or importing a library.
     • More lightweight and compact code.
   • Cons:
     • Less readable and maintainable code, as it can be harder to express the intention of setting a property directly.
     • May lead to errors if not used carefully.

Library used:

In this benchmark, Lodash is used as a utility library. Specifically, the lodash.set function is used in one of the test cases. The set function is designed to provide a safe and convenient way to set properties on objects without using bracket notation or the dot notation syntax directly.

Special JS feature or syntax:

There are no special JavaScript features or syntaxes being tested in this benchmark. Both approaches rely on standard JavaScript syntax.

Other alternatives:

For setting object properties, there are other approaches that could be used instead of Lodash's set function and dot notation:

• Bracket notation (e.g., person['age'] = 10)
• Object literal shorthand (e.g., { age: 10 })

However, these alternatives are not being tested in this specific benchmark.

Benchmark preparation code:

The provided script preparation code defines a simple person object with properties name and lastName, which is used as the test subject for the benchmark. The HTML preparation code includes a reference to Lodash's library, which makes the _set function available during the benchmark execution.