sindresorhus

Pure ESM package

The package that linked you here is now pure ESM. It cannot be require()'d from CommonJS.

This means you have the following choices:

1. Use ESM yourself. (preferred)
   Use import foo from 'foo' instead of const foo = require('foo') to import the package. You also need to put "type": "module" in your package.json and more. Follow the below guide.
2. If the package is used in an async context, you could use await import(…) from CommonJS instead of require(…).
3. Stay on the existing version of the package until you can move to ESM.

sebmarkbage

I heard some points of criticism to how React deals with reactivity and it's focus on "purity". It's interesting because there are really two approaches evolving. There's a mutable + change tracking approach and there's an immutability + referential equality testing approach. It's difficult to mix and match them when you build new features on top. So that's why React has been pushing a bit harder on immutability lately to be able to build on top of it. Both have various tradeoffs but others are doing good research in other areas, so we've decided to focus on this direction and see where it leads us.

I did want to address a few points that I didn't see get enough consideration around the tradeoffs. So here's a small brain dump.

"Compiled output results in smaller apps" - E.g. Svelte apps start smaller but the compiler output is 3-4x larger per component than the equivalent VDOM approach. This is mostly due to the code that is usually shared in the VDOM "VM" needs to be inlined into each component. The tr

bvaughn

This API was removed in React 17

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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.

PurpleBooth

coin8086

Use Proxy for Git/GitHub

Generally, the Git proxy configuration depends on the Git Server Protocol you use. And there're two common protocols: SSH and HTTP/HTTPS. Both require a proxy setup already. In the following, I assume a SOCKS5 proxy set up on localhost:1080. But it can also be a HTTP proxy. I'll talk about how to set up a SOCKS5 proxy later.

SSH Protocol

When you do git clone ssh://[user@]server/project.git or git clone [user@]server:project.git, you're using the SSH protocol. You need to configurate your SSH client to use a proxy. Add the following to your SSH config file, say ~/.ssh/config:

ProxyCommand nc -x localhost:1080 %h %p

Kruemelkatze

Theming Ant Design with Sass and Webpack

This is a solution on how to theme/customize Ant Design (which is written in Less) with Sass and webpack. Ant itself offers two solutions and a related article on theming, but these are only applicable if you use Less, the antd-init boilerplate or dva-cli.

What this solution offers:

• use a single sass-file to customize (no duplicate variables for your project and Ant)
• hot reload compatibility
• no dependencies on outdated npm modules
• easy integration with your existing webpack setup (webpack 3+ tested)

threepointone

import React from 'react'
import { render } from 'react-dom'

// with fiber, we'll be able to write components that update text deep 
// inside another string without wrapper dom, or rerendering the whole component 

// before
class Lorem extends React.Component {
  state = {
    str: ''

afc163

import provinces from 'china-division/dist/provinces.json';
import cities from 'china-division/dist/cities.json';
import areas from 'china-division/dist/areas.json';

areas.forEach((area) => {
  const matchCity = cities.filter(city => city.code === area.cityCode)[0];
  if (matchCity) {
    matchCity.children = matchCity.children || [];
    matchCity.children.push({
      label: area.name,

dceddia

module.exports = function(config) {
    // Generate sourcemaps
    config.devtool = 'source-map';

    // Compile i18n messages throughout the project into JSON files
    config.module.loaders[0].query.plugins = [
        ["react-intl", {
            "messagesDir": "./build/messages/"
        }]
    ];

ryanflorence

import React from 'react'
import Router from 'react-router/BrowserRouter'
import Match from 'react-router/Match'
import Link from 'react-router/Link'
import Redirect from 'react-router/Redirect'

function elementInViewport(el) {
  var top = el.offsetTop
  var left = el.offsetLeft
  var width = el.offsetWidth