react-rendercov

react-rendercov is a powerful utility designed to collect render counts during Playwright tests and output them as structured JSON data. It internally uses the Bippy package.

Features

• Seamless Integration with Playwright: Easily integrates with your existing Playwright test suite to capture render counts.
• JSON Output: Outputs collected render data as structured JSON, which you can use for analysis.

Installation

You can install react-rendercov via npm:

npm install react-rendercov --save-dev

Usage

Instrumentation

import { initRenderCovPlaywright } from "react-rendercov";
initRenderCovPlaywright();

IMPORTANT - Initialize this before importing react in your codebase root/index file.

Tests

import { renderCovTest as test } from "react-rendercov/playwright";

renderCovTest('test render collection', async ({ page }) => {
  ...
});