Real unit test (isolation, no children render)
Calls:
- constructor
- render
const express = require('express'); | |
const cors = require('cors'); | |
const { google } = require('googleapis'); | |
const { auth } = require('google-auth-library'); | |
const fs = require('fs'); | |
const dotenv = require('dotenv'); |
'use strict'; | |
function BinarySearchTree() { | |
this.root = null; | |
} | |
BinarySearchTree.prototype.insertNode = function (val) { | |
var node = { | |
data : val, |
{ | |
"env": { | |
"development": { | |
"plugins": ["transform-es2015-modules-commonjs"] | |
}, | |
"test": { | |
"plugins": ["transform-es2015-modules-commonjs", "@babel/plugin-proposal-class-properties"], | |
"presets": [ | |
"@babel/preset-react" | |
] |
When submitting a pull request to WP Rig, we ask that you squash your commits before we merge. | |
Some applications that interact with git repos will provide a user interface for squashing. Refer to your application's document for more information. | |
If you're using the Terminal, you can do the following: | |
Make sure your branch is up to date with the master branch. | |
Run git rebase -i master. | |
You should see a list of commits, each commit starting with the word "pick". | |
Make sure the first commit says "pick" and change the rest from "pick" to "squash". -- This will squash each commit into the previous commit, which will continue until every commit is squashed into the first commit. |
import React from 'react'; | |
import UseStateDemo from './UseStateDemo'; | |
import UseEffectDemo from './UseEffectDemo'; | |
import './App.css'; | |
export default () => ( | |
<div style={{ margin: '20px auto', padding: '20px', width: 200 }}> | |
<UseStateDemo /> | |
<UseEffectDemo /> | |
</div> |
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.
This Gist provides some high-level docum
React recently introduced an experimental profiler API. This page gives instructions on how to use this API in a production release of your app.
Table of Contents
If you havenβt worked with JavaScript in the last few years, these three points should give you enough knowledge to feel comfortable reading the React documentation:
let
and const
statements. For the purposes of the React documentation, you can consider them equivalent to var
.class
keyword to define JavaScript classes. There are two things worth remembering about them. Firstly, unlike with objects, you don't need to put commas between class method definitions. Secondly, unlike many other languages with classes, in JavaScript the value of this
in a method [depends on how it is called](https://developer.mozilla.org/en-US/docs/Web/JavIn production, it is recommended to minify any JavaScript code that is included with your application. Minification can help your website load several times faster, especially as the size of your JavaScript source code grows.
Here's one way to set it up:
npm init -y
in your project folder (don't skip this step!)npm install terser
Now, to minify a file called like_button.js
, run in the terminal: