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https://github.com/kyle-west/perf-test

:fire: CLI to test performance page load trials on Chromium, Firefox, and WebKit.
https://github.com/kyle-west/perf-test

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:fire: CLI to test performance page load trials on Chromium, Firefox, and WebKit.

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# Web Page Load Performance Tester

CLI to test performance page load trials on Chromium, Firefox, and WebKit.

Uses the beautiful [playwright](https://github.com/microsoft/playwright) package underneath.

_Note: This package is still in pre-release and subject to possible change._

## Install

Install globally using NPM.

```sh
npm install -g @kyle-west/perf-test
```

## Usage

The `perf` CLI simply needs a URL to test against, and a count for the number of trials to run (defaults to 3).

```sh
perf []
```

### Example

Running: `perf https://github.com/kyle-west 3` will test 3 page load trials of loading github.com. It will output something of the following:

```
Time Trials for https://github.com/kyle-west on Thu Jul 09 2020

Time Trials for Chromium Browser
┌─────────┬─────────────┬────────────────┬──────────────────────────┬──────────────┐
│ (index) │ responseEnd │ domInteractive │ domContentLoadedEventEnd │ loadEventEnd │
├─────────┼─────────────┼────────────────┼──────────────────────────┼──────────────┤
│ 0 │ 2269 │ 2420 │ 2420 │ 2772 │
│ 1 │ 388 │ 553 │ 554 │ 891 │
│ 2 │ 372 │ 675 │ 675 │ 841 │
└─────────┴─────────────┴────────────────┴──────────────────────────┴──────────────┘
Chromium Averages
┌──────────────────────────┬────────────────────┐
│ (index) │ Values │
├──────────────────────────┼────────────────────┤
│ responseEnd │ 1009.6666666666666 │
│ domInteractive │ 1216 │
│ domContentLoadedEventEnd │ 1216.3333333333333 │
│ loadEventEnd │ 1501.3333333333333 │
└──────────────────────────┴────────────────────┘

Time Trials for Firefox Browser
┌─────────┬─────────────┬────────────────┬──────────────────────────┬──────────────┐
│ (index) │ responseEnd │ domInteractive │ domContentLoadedEventEnd │ loadEventEnd │
├─────────┼─────────────┼────────────────┼──────────────────────────┼──────────────┤
│ 0 │ 532 │ 906 │ 910 │ 1096 │
│ 1 │ 542 │ 916 │ 920 │ 1105 │
│ 2 │ 546 │ 920 │ 947 │ 1129 │
└─────────┴─────────────┴────────────────┴──────────────────────────┴──────────────┘
Firefox Averages
┌──────────────────────────┬───────────────────┐
│ (index) │ Values │
├──────────────────────────┼───────────────────┤
│ responseEnd │ 540 │
│ domInteractive │ 914 │
│ domContentLoadedEventEnd │ 925.6666666666666 │
│ loadEventEnd │ 1110 │
└──────────────────────────┴───────────────────┘

Time Trials for WebKit Browser
┌─────────┬─────────────┬────────────────┬──────────────────────────┬──────────────┐
│ (index) │ responseEnd │ domInteractive │ domContentLoadedEventEnd │ loadEventEnd │
├─────────┼─────────────┼────────────────┼──────────────────────────┼──────────────┤
│ 0 │ 305 │ 502 │ 502 │ 828 │
│ 1 │ 315 │ 529 │ 529 │ 846 │
│ 2 │ 304 │ 497 │ 498 │ 819 │
└─────────┴─────────────┴────────────────┴──────────────────────────┴──────────────┘
WebKit Averages
┌──────────────────────────┬───────────────────┐
│ (index) │ Values │
├──────────────────────────┼───────────────────┤
│ responseEnd │ 308 │
│ domInteractive │ 509.3333333333333 │
│ domContentLoadedEventEnd │ 509.6666666666667 │
│ loadEventEnd │ 831 │
└──────────────────────────┴───────────────────┘
```

### Run a script

```sh
perf --script [--engine ]
```

Scripts must be modules of the form:

```js
module.exports = async () => {
// page, browser, engine, engineName, context available globally
await page.goto("https://google.com")
}
```

### Record Video

Include the `--record-video` in the arguments list to save a local file. _Note this feature only works in script mode for Chromium browsers_

```sh
perf --script --record-video
```

File will be saved to `.mp4`