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@bvaughn
bvaughn / index.md
Last active April 23, 2026 07:16
Interaction tracing with React

This API was removed in React 17


Interaction tracing with React

React recently introduced an experimental profiler API. After discussing this API with several teams at Facebook, one common piece of feedback was that the performance information would be more useful if it could be associated with the events that caused the application to render (e.g. button click, XHR response). Tracing these events (or "interactions") would enable more powerful tooling to be built around the timing information, capable of answering questions like "What caused this really slow commit?" or "How long does it typically take for this interaction to update the DOM?".

With version 16.4.3, React added experimental support for this tracing by way of a new NPM package, scheduler. However the public API for this package is not yet finalized and will likely change with upcoming minor releases, so it should be used with caution.

@FennNaten
FennNaten / image-queue.js
Last active July 10, 2017 01:09 — forked from sararob/image-queue.js
updating https://gist.github.com/sararob/275b252d1eda3a5baa27d6464d2f2198 to add example of reducing memory usage by using file streams
'use strict';
/**
* this is a fork of https://gist.github.com/sararob/275b252d1eda3a5baa27d6464d2f2198
* with some code added to show how reading from and writing to the big source and destination files
* can be done with streams to reduce memory pressure
* code added is there as an example to illustrate the principles involved and is not tested, so it may contains bugs
*/
// Dependencies
@oscarrenalias
oscarrenalias / README.md
Last active September 27, 2020 18:46
Docker service discovery with HAproxy, consul and registrator on Docker Machine and Docker Swarm
@ericelliott
ericelliott / es7-class.md
Last active March 25, 2021 10:27
Let's fix `class` in ES7

Two Simple Changes to Simplify class

I'm not suggesting drastic action. I don't want to break backwards compatibility. I simply want to make the class feature more usable to a broader cross section of the community. I believe there is some low-hanging fruit that can be harvested to that end.

Imagine AutoMaker contained class Car, but the author wants to take advantage of prototypes to enable factory polymorphism in order to dynamically swap out implementation.

Stampit does something similar to this in order to supply information needed to inherit from composable factory functions, known as stamps.

This isn't the only way to achieve this, but it is a convenient way which is compatible with .call(), .apply(), and .bind().

@cletusw
cletusw / .eslintrc
Last active October 18, 2025 21:45
ESLint Reset - A starter .eslintrc file that resets all rules to off and includes a description of what each rule does. From here, enable the rules that you care about by changing the 0 to a 1 or 2. 1 means warning (will not affect exit code) and 2 means error (will affect exit code).
{
// http://eslint.org/docs/rules/
"ecmaFeatures": {
"binaryLiterals": false, // enable binary literals
"blockBindings": false, // enable let and const (aka block bindings)
"defaultParams": false, // enable default function parameters
"forOf": false, // enable for-of loops
"generators": false, // enable generators
"objectLiteralComputedProperties": false, // enable computed object literal property names
@scottjehl
scottjehl / noncritcss.md
Last active August 12, 2023 16:57
Comparing two ways to load non-critical CSS

I wanted to figure out the fastest way to load non-critical CSS so that the impact on initial page drawing is minimal.

TL;DR: Here's the solution I ended up with: https://github.com/filamentgroup/loadCSS/


For async JavaScript file requests, we have the async attribute to make this easy, but CSS file requests have no similar standard mechanism (at least, none that will still apply the CSS after loading - here are some async CSS loading conditions that do apply when CSS is inapplicable to media: https://gist.github.com/igrigorik/2935269#file-notes-md ).

Seems there are a couple ways to load and apply a CSS file in a non-blocking manner:

@bradmontgomery
bradmontgomery / install-comodo-ssl-cert-for-nginx.rst
Last active March 27, 2026 06:36
Steps to install a Comodo PositiveSSL certificate with Nginx.

Setting up a SSL Cert from Comodo

I use Namecheap.com as a registrar, and they resale SSL Certs from a number of other companies, including Comodo.

These are the steps I went through to set up an SSL cert.

Purchase the cert

@MohamedAlaa
MohamedAlaa / tmux-cheatsheet.markdown
Last active June 8, 2026 03:37
tmux shortcuts & cheatsheet

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname