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Benchmark Overview

The benchmark compares the performance of two approaches: using push() and using the spread operator (...) with array literals, in JavaScript version 3.

Options Compared

There are two main options being compared:

1. push(): This method adds a new element to the end of an array and returns the new length of the array.
2. Spread Operator (...): This operator creates a new array by spreading elements from an existing array or values.

Pros and Cons

• push():
  • Pros: Can be more efficient in terms of memory allocation, as it modifies the original array in place.
  • Cons: Can be slower due to the overhead of modifying the array's internal state.
• Spread Operator (...):
  • Pros: Creates a new array without modifying the original, which can be faster and more predictable for performance-critical code.
  • Cons: Requires creating a new array object, which can lead to increased memory allocation.

Library Used

In this benchmark, no specific library is used. The JavaScript engine itself handles the execution of the test cases.

Special JS Feature or Syntax

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

Other Considerations

The benchmark uses a simple array creation and modification pattern to simulate real-world usage scenarios.

Alternative Approaches

Some alternative approaches that might be worth considering include:

1. Using unshift(): This method adds an element to the beginning of an array, which can be slower than push().
2. Using a data structure other than arrays: Depending on the specific use case, using a different data structure, such as a linked list or a stack, might provide better performance.
3. Parallelizing the tests: Running multiple threads or processes concurrently to test both options simultaneously.

Keep in mind that this benchmark is focused specifically on comparing the performance of push() and the spread operator (...) with array literals, so these alternative approaches may not be relevant to this particular use case.