Benchmark: Intl.Collator.compare() lowercase vs sensitivity

Script Preparation code:

var a = "FOO BAR";
var b = "foo bar";

var options = {
  sensitivity: 'accent'
};

var collator1 = new Intl.Collator(undefined, options);
var collator2 = new Intl.Collator();

Tests:

lowercase
collator2.compare(a.toLowerCase(), b.toLowerCase()) === 0
sensitivity
collator1.compare(a, b) === 0

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lowercase
sensitivity

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser/OS: Chrome 129 on Windows

View result in a separate tab

Test name	Executions per second
lowercase	8741430.0 Ops/sec
sensitivity	7377429.0 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark and explain what's being tested, compared options, pros and cons of each approach, and other considerations.

**Benchmark Overview**

The test case compares the performance of two approaches when using the `Intl.Collator.compare()` method in JavaScript. The purpose of this method is to compare two strings based on their locale-specific rules and formatting.

**Options Compared**

There are two options being compared:

1. **`sensitivity: 'accent'`**: This option tells the collator to consider accent marks when comparing strings. When `sensitivity: 'accent'`, the comparison will take into account the diacritical marks on characters, such as 'ä' vs 'a'.
2. **No sensitivity (default)**: Without specifying any options, the collator will not consider accent marks and will perform a case-insensitive comparison.

**Pros and Cons of Each Approach**

1. **`sensitivity: 'accent'`**:
	* Pros: Accurately handles accent marks, which is important for languages that use diacritical marks.
	* Cons: Slower performance compared to the default approach.
2. **No sensitivity (default)**:
	* Pros: Faster performance, as it doesn't need to consider accent marks.
	* Cons: May not accurately handle accent marks, which can lead to incorrect results in certain languages.

**Library and Its Purpose**

The `Intl.Collator` API is a built-in JavaScript library that provides support for comparing strings based on locale-specific rules. It's designed to work with multiple languages and dialects, making it a useful tool for text processing and comparison tasks.

**Other Considerations**

* The benchmark results are reported in terms of the number of executions per second (ExecutionsPerSecond), which is a measure of performance.
* The tests use Chrome 129 as the browser, but the results should be applicable to other browsers that support `Intl.Collator`.
* The benchmark doesn't account for variations in string inputs or edge cases, such as null or undefined values.

**Alternatives**

If you're looking for alternative approaches to compare strings based on locale-specific rules, consider using:

1. **String comparison libraries**: Libraries like ICU (International Components for Unicode) or Google's Translation API provide more comprehensive support for string comparison across different languages.
2. **Custom implementation**: If you have control over the string inputs and need fine-grained customization, you can implement your own string comparison logic using JavaScript.

Keep in mind that these alternatives might require more development effort and expertise compared to using `Intl.Collator`.

Related benchmarks:

Intl.Collator.compare() lowercase vs sensitivity (version: 0)

Comparing performance of: lowercase vs sensitivity

Created: one year ago by: Guest

Jump to the latest result

lowercase

sensitivity

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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