catstodon/app/javascript/mastodon/performance.js

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//
// Tools for performance debugging, only enabled in development mode.
// Open up Chrome Dev Tools, then Timeline, then User Timing to see output.
// Also see config/webpack/loaders/mark.js for the webpack loader marks.
//
let marky;
if (process.env.NODE_ENV === 'development') {
if (typeof performance !== 'undefined' && performance.setResourceTimingBufferSize) {
// Increase Firefox's performance entry limit; otherwise it's capped to 150.
// See: https://bugzilla.mozilla.org/show_bug.cgi?id=1331135
performance.setResourceTimingBufferSize(Infinity);
}
marky = require('marky');
// allows us to easily do e.g. ReactPerf.printWasted() while debugging
//window.ReactPerf = require('react-addons-perf');
//window.ReactPerf.start();
}
export function start(name) {
if (process.env.NODE_ENV === 'development') {
marky.mark(name);
}
}
export function stop(name) {
if (process.env.NODE_ENV === 'development') {
marky.stop(name);
}
}