Release v4.0.0 · puppeteer/puppeteer
Breaking change: Puppeteer no longer uses Node’s EventEmitter library As part of our work to make Puppeteer agnostic of its environment we are removing the dependency on Node’s EventEmitter in favour of an event emitter that is not tied to Node. Under the hood we use Mitt, but we extend Mitt with additional functionality to match most of the methods that Node’s EventEmitter provides. The following
Profiling React.js Performance
April 8, 2020 Today, we'll look at measuring React component render performance with the React Profiler API, measuring interactions with React's new experimental Interaction Tracing API and measuring custom metrics using the User Timing API. For demonstration purposes, we'll be using a Movie queueing app. The React Profiler API The React Profiler API measures renders and the cost of rendering to h
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