openreplay/tracker/tracker-profiler/README.md
2021-05-03 13:31:55 +02:00

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# OpenReplay Tracker profiler plugin
The profiler plugin allows you to measure function performance and
capture the arguments and result for each function call.
## Installation
```bash
npm i @openreplay/tracker-profiler
```
## Usage
Initialize the `@openreplay/tracker` package as usual and load the plugin into it.
Then decorate any function inside your code with the generated function.
```js
import Tracker from '@openreplay/tracker';
import trackerProfiler from '@openreplay/tracker-profiler';
const tracker = new Tracker({
projectKey: YOUR_PROJECT_KEY,
});
tracker.start();
export const profiler = tracker.plugin(trackerProfiler());
const fn = profiler('call_name')(() => {
// ...
}, thisArg); // thisArg is optional
```