Benchmark: Coercing - MeasureThat.net

Script Preparation code:

function coerceBoolean (value) {
  const booleans = ['true', 'false']

  if (booleans.includes(value)) return value === 'true'

  return value
}

function coerceSimpleBoolean (value) {
  if (value === 'true') return true
  if (value === 'false') return false
  return value
}

Tests:

Coercing
coerceBoolean('true') coerceBoolean(true) coerceBoolean(false) coerceBoolean('false') coerceBoolean('farts')
Simple version
coerceSimpleBoolean('true') coerceSimpleBoolean(true) coerceSimpleBoolean(false) coerceSimpleBoolean('false') coerceSimpleBoolean('farts')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Coercing
Simple version

Fastest: N/A

Slowest: N/A

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Let's break down the provided JSON data and explain what's being tested, compared, and their pros and cons.

**Benchmark Definition**

The benchmark definition represents two different approaches to coercing (converting) boolean values in JavaScript:

1. `coerceBoolean` function:
```javascript
function coerceBoolean(value) {
  const booleans = ['true', 'false'];
  if (booleans.includes(value)) return value === 'true';
  return value;
}
```
This function uses an array of known boolean strings (`'true'`, `'false'`) to check if the input `value` is a valid boolean string. If it is, the function returns a boolean value based on whether the string matches `'true'`. Otherwise, it simply returns the original `value`.

Pros:

* Handles both string and non-string values (e.g., `true`, `false`, `123`)
* Simple and concise implementation

Cons:

* May lead to unexpected behavior if `booleans` array is modified or extended
* Does not provide a clear way to distinguish between boolean strings and other values

2. `coerceSimpleBoolean` function:
```javascript
function coerceSimpleBoolean(value) {
  if (value === 'true') return true;
  if (value === 'false') return false;
  return value;
}
```
This function uses explicit `if-else` statements to check for specific boolean string values (`'true'` and `'false'`). If the input `value` matches one of these strings, the function returns a corresponding boolean value. Otherwise, it simply returns the original `value`.

Pros:

* Clear and concise implementation
* Provides a clear way to distinguish between boolean strings and other values

Cons:

* More complex implementation than `coerceBoolean`
* May be slower due to additional branching

**Individual Test Cases**

The benchmark definition includes two test cases:

1. `Coercing`:
```javascript
coerceBoolean('true')
coerceBoolean(true)
coerceBoolean(false)
coerceBoolean('false')
coerceBoolean('farts')
```
This test case exercises the `coerceBoolean` function with various inputs, including string and non-string values.

2. `Simple version`:
```javascript
coerceSimpleBoolean('true')
coerceSimpleBoolean(true)
coerceSimpleBoolean(false)
coerceSimpleBoolean('false')
coerceSimpleBoolean('farts')
```
This test case exercises the `coerceSimpleBoolean` function with similar inputs to the first test case.

**Library and Special JS Features**

There are no libraries mentioned in the benchmark definition or test cases. However, the `includes()` method used in `coerceBoolean` is a JavaScript standard feature introduced in ECMAScript 2015 (ES6).

No special JS features or syntax are being tested beyond the standard language features.

**Alternatives**

Other approaches to coercing boolean values in JavaScript might include:

1. Using `Boolean()` constructor: `Boolean('true')` would return `true`, while `Boolean(false)` would return `false`. However, this approach has its own set of pros and cons (e.g., handling non-boolean values).
2. Using a switch statement or object-based approach: These alternatives might provide more flexibility but can also lead to increased complexity and performance overhead.
3. Custom coercing functions using additional libraries or frameworks: Depending on the use case, additional libraries or frameworks might be required to implement custom coercion logic.

The provided benchmark definition focuses on comparing two simple approaches to coercing boolean values in JavaScript, highlighting their pros and cons for different scenarios.

Related benchmarks:

Coercing (version: 0)

Coercing

Comparing performance of: Coercing vs Simple version

Created: 5 years ago by: Guest

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