Benchmark: RequireJS paths processing

Script Preparation code:

const pathMap = new Map()
pathMap.set('test', 'site/app')
pathMap.set('vendor', 'site/vendor')
window.pathMap = pathMap
window.testId = 'test/lib/alpaca/js/alpaca'

AخA
 
const pathMap = new Map()pathMap.set('test', 'site/app')pathMap.set('vendor', 'site/vendor')window.pathMap = pathMapwindow.testId = 'test/lib/alpaca/js/alpaca'

Tests:

path part splitting and joining

const pathMap = window.pathMap
const parts = window.testId.split('/')
let modified
for (let { length } = parts; length > 0; --length) {
  const parent = parts.slice(0, length).join('/')
  const path = pathMap.get(parent)
  if (path) {
    parts.splice(0, length, path)
    modified = true
    break
  }
}
const mapped = parts.join('/')

​x
 
const pathMap = window.pathMapconst parts = window.testId.split('/')let modifiedfor (let { length } = parts; length > 0; --length) {  const parent = parts.slice(0, length).join('/')  const path = pathMap.get(parent)  if (path) {    parts.splice(0, length, path)    modified = true    break  }}const mapped = parts.join('/')​

looking up path separators

const pathMap = window.pathMap
let mapped = window.testId
for (let separator = mapped.length;;) {
  const parent = mapped.substr(0, separator)
  const path = pathMap.get(parent)
  if (path) {
    mapped = `${path}${mapped.substr(separator)}`
    break
  }
  separator = mapped.lastIndexOf('/', separator - 1)
  if (separator < 0) break
}

 
const pathMap = window.pathMaplet mapped = window.testIdfor (let separator = mapped.length;;) {  const parent = mapped.substr(0, separator)  const path = pathMap.get(parent)  if (path) {    mapped = `${path}${mapped.substr(separator)}`    break  }  separator = mapped.lastIndexOf('/', separator - 1)  if (separator < 0) break}​

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Experimental features:

Memory measurements supported only in Chrome.
For precise memory measurements Chrome must be launched with --enable-precise-memory-info flag.
More information: Monitoring JavaScript Memory

Test case name	Result
path part splitting and joining
looking up path separators

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4270.0 Safari/537.36

Browser/OS: Chrome 87 on Mac OS X 10.14.6

View result in a separate tab

Test name	Executions per second
path part splitting and joining	583397.5 Ops/sec
looking up path separators	1391124.4 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 5 months ago):

Let's break down the provided benchmark test cases.

Benchmark Definition

The benchmark measures how efficiently JavaScript can process paths in two different ways: by splitting and concatenating path parts, or by looking up separators in the path.

Options Compared

There are two approaches being compared:

Path part splitting and joining: This approach involves splitting the path into individual parts and then joining them back together.
Looking up path separators: This approach involves finding the first separator (e.g., /) in the path and using it to look up a corresponding value in the pathMap.

Pros and Cons

Path part splitting and joining:
- Pros: Simple, straightforward approach that can be easily understood by developers.
- Cons: May not be as efficient for large paths or complex cases, as it involves repeated string manipulation.
Looking up path separators:
- Pros: Can be more efficient than the first approach, especially for large paths, since it only requires a single pass through the path.
- Cons: Requires the pathMap to be implemented and optimized, which can add complexity.

Library

The pathMap is a custom object that maps path prefixes to corresponding values. Its purpose is to provide a lookup mechanism for efficiently resolving paths.

Test Case Interpretation

For the first test case ("path part splitting and joining"), the benchmark measures how long it takes to:

Split the testId path into individual parts using / as the separator.
Join the parts back together, replacing each part with its corresponding value from pathMap.

For the second test case ("looking up path separators"), the benchmark measures how long it takes to:

Find the first separator in the mapped path and use it to look up a corresponding value in pathMap.
Update mapped by concatenating the found value with the remaining part of the path.

Special JS Feature/Syntax

There is no special JavaScript feature or syntax being tested in this benchmark. The tests are focused on the efficiency of the two different approaches for processing paths.

Other Alternatives

If you wanted to test alternative approaches for processing paths, some possible options could include:

Using a more advanced path resolution algorithm, such as one that uses regular expressions.
Implementing a custom caching mechanism to store and retrieve path values.
Comparing the performance of different JavaScript engines or interpreters.
Testing the performance of these benchmarks on different types of input data (e.g., short vs. long paths).

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark test cases.

**Benchmark Definition**

The benchmark measures how efficiently JavaScript can process paths in two different ways: by splitting and concatenating path parts, or by looking up separators in the path.

**Options Compared**

There are two approaches being compared:

1. **Path part splitting and joining**: This approach involves splitting the path into individual parts and then joining them back together.
2. **Looking up path separators**: This approach involves finding the first separator (e.g., `/`) in the path and using it to look up a corresponding value in the `pathMap`.

**Pros and Cons**

* **Path part splitting and joining**:
	+ Pros: Simple, straightforward approach that can be easily understood by developers.
	+ Cons: May not be as efficient for large paths or complex cases, as it involves repeated string manipulation.
* **Looking up path separators**:
	+ Pros: Can be more efficient than the first approach, especially for large paths, since it only requires a single pass through the path.
	+ Cons: Requires the `pathMap` to be implemented and optimized, which can add complexity.

**Library**

The `pathMap` is a custom object that maps path prefixes to corresponding values. Its purpose is to provide a lookup mechanism for efficiently resolving paths.

**Test Case Interpretation**

For the first test case ("path part splitting and joining"), the benchmark measures how long it takes to:

1. Split the `testId` path into individual parts using `/` as the separator.
2. Join the parts back together, replacing each part with its corresponding value from `pathMap`.

For the second test case ("looking up path separators"), the benchmark measures how long it takes to:

1. Find the first separator in the `mapped` path and use it to look up a corresponding value in `pathMap`.
2. Update `mapped` by concatenating the found value with the remaining part of the path.

**Special JS Feature/Syntax**

There is no special JavaScript feature or syntax being tested in this benchmark. The tests are focused on the efficiency of the two different approaches for processing paths.

**Other Alternatives**

If you wanted to test alternative approaches for processing paths, some possible options could include:

* Using a more advanced path resolution algorithm, such as one that uses regular expressions.
* Implementing a custom caching mechanism to store and retrieve path values.
* Comparing the performance of different JavaScript engines or interpreters.
* Testing the performance of these benchmarks on different types of input data (e.g., short vs. long paths).

Related benchmarks:

RequireJS paths processing (version: 2)

Replace path prefixes either by splitting and concatenating path parts or by looking up separators in the path.

Comparing performance of: path part splitting and joining vs looking up path separators

Created: 4 years ago by: Registered User

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