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@addyosmani
addyosmani / lcp.js
Last active March 26, 2024 00:09
Largest Contentful Paint - Puppeteer
const puppeteer = require('puppeteer');
const Good3G = {
'offline': false,
'downloadThroughput': 1.5 * 1024 * 1024 / 8,
'uploadThroughput': 750 * 1024 / 8,
'latency': 40
};
const phone = puppeteer.KnownDevices['Nexus 5X'];
/*
A collection of tests where Flow and TypeScript might have different behavior
Some tests are borrowed from https://github.com/vkurchatkin/typescript-vs-flow
Some tests now have the same behavior as the new versions of Flow/TS have fixed the bugs and improved type safety
*/
/* 1. Accessing unknown properties on objects */
@gaearon
gaearon / prepack-gentle-intro-1.md
Last active March 22, 2025 07:22
A Gentle Introduction to Prepack, Part 1

Note:

When this guide is more complete, the plan is to move it into Prepack documentation.
For now I put it out as a gist to gather initial feedback.

A Gentle Introduction to Prepack (Part 1)

If you're building JavaScript apps, you might already be familiar with some tools that compile JavaScript code to equivalent JavaScript code:

  • Babel lets you use newer JavaScript language features, and outputs equivalent code that targets older JavaScript engines.
@okonet
okonet / lightning_talk_proposal.md
Last active April 10, 2018 10:09
Make linting great again! -- ReactiveConf 2017 ⚡️talk proposal

Please 🌟 this gist to vote for this proposal!

Make linting great again!

tabs vs spaces

No other topic in software development probably has so much controversy as linting.

With a wrong workflow linting can be really a pain and will slow you and your team down. With a proper setup, though, it can save you hours of manual work reformatting the code and reducing the code-review overhead.

@A-gambit
A-gambit / ReactiveConf2017.md
Last active June 19, 2021 16:57
Proposal for lightning talk at ReactiveConf 2017: How do you make friends with React and FRP? 🤔 Start to develop your application using Focal.

How do you make friends with React and FRP? 🤔 Start to develop your application using Focal.

This is a CFP for the ⚡️Lightning⚡️ talk at awesome ReactiveConf 2017. If you'd like to see this talk, please 🌟 star🌟 this summary and retweet my tweet 🙂 #ReactiveConf

image

Functional reactive programming (FRP) is very popular nowadays. The JavaScript community provides us with excellent tools like RxJS, Bacon, and Kefir. But, as we know, they have nothing to do with React. So how we can use the power of FRP in our React application? Using the correct state management, we can make friends with FRP and React and make our application truly reactive. In my lightning talk, I will talk about Focal

@viecode09
viecode09 / Hadoop_install_osx.md
Created March 18, 2017 17:22
This is how to install hadoop on Mac OS

STEP 1: First Install HomeBrew, download it from http://brew.sh

$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

STEP 2: Install Hadoop

$ brew search hadoop
$ brew install hadoop
@A-gambit
A-gambit / REACTIVE2016-LIGHTNING-PROPOSAL.md
Last active February 22, 2024 18:24
Proposal for lightning talk at ReactiveConf 2016: Road from UndefinedLand

Proposal for a lightning talk at the Reactive 2016.

Keep calm and like/retweet it on Twitter and star this Gist to vote on this talk.

Road from UndefinedLand

Undefiend

I work at Grammarly. We like React and happily use it in our applications. However, sometimes something goes wrong and bugs creep into the code. Here comes testing. It helps make us confident about the quality of our code.

@remojansen
remojansen / class_decorator.ts
Last active September 14, 2023 14:54
TypeScript Decorators Examples
function logClass(target: any) {
// save a reference to the original constructor
var original = target;
// a utility function to generate instances of a class
function construct(constructor, args) {
var c : any = function () {
return constructor.apply(this, args);
}
@staltz
staltz / introrx.md
Last active April 24, 2025 06:10
The introduction to Reactive Programming you've been missing