sibelius

You first need to undestand the concept of frontend tests.

You should not test the implementation but the behavior

You test like the end user

For instance, imagine a login screen with email and password inputs and a submit button

The test should input the email and the password, then click in the submit button.

silver-xu

Setup a Node.js project with Typescript, ESLint, Prettier, Husky

Starting a personal node project could be easy; starting a team node project could be challenging.

I am a developer currently working in SEEK Australia.

In my experience, common mistakes developer make when starting a projects are:

• No Linting

Tamal

$ git clone [email protected]:xxxxx/xxxx.git my-awesome-proj
Cloning into 'my-awesome-proj'...
ssh: connect to host github.com port 22: Connection timed out
fatal: Could not read from remote repository.

$ # This should also timeout
$ ssh -T [email protected]
ssh: connect to host github.com port 22: Connection timed out

$ # but this might work

sebmarkbage

The Rules of React

All libraries have subtle rules that you have to follow for them to work well. Often these are implied and undocumented rules that you have to learn as you go. This is an attempt to document the rules of React renders. Ideally a type system could enforce it.

What Functions Are "Pure"?

A number of methods in React are assumed to be "pure".

On classes that's the constructor, getDerivedStateFromProps, shouldComponentUpdate and render.

atinux

const waitFor = (ms) => new Promise(r => setTimeout(r, ms))
const asyncForEach = async (array, callback) => {
  for (let index = 0; index < array.length; index++) {
    await callback(array[index], index, array)
  }
}

const start = async () => {
  await asyncForEach([1, 2, 3], async (num) => {
    await waitFor(50)

joduplessis

/*
 * General utils for managing cookies in Typescript.
 */
export function setCookie(name: string, val: string) {
    const date = new Date();
    const value = val;

    // Set it expire in 7 days
    date.setTime(date.getTime() + (7 * 24 * 60 * 60 * 1000));

zubaer-ahammed

Reset mysql root password in Mac OS:

First Stop MySQL:

1. Go to: 'System Preferences' >> 'MySQL' and stop MySQL

OR,

1. sudo /usr/local/mysql/support-files/mysql.server start
2. sudo /usr/local/mysql/support-files/mysql.server stop

learncodeacademy

//events - a super-basic Javascript (publish subscribe) pattern

var events = {
  events: {},
  on: function (eventName, fn) {
    this.events[eventName] = this.events[eventName] || [];
    this.events[eventName].push(fn);
  },
  off: function(eventName, fn) {
    if (this.events[eventName]) {