Oleksandr Kovalov okovalov

You can disable one or more specific ESLint rules for a whole file by adding on a few lines:

/* eslint-disable no-debugger, no-console */
console.log('test')

or you can just do so in a block, re-enabling it afterwards:

To remove a submodule you need to:

Delete the relevant section from the .gitmodules file.
Stage the .gitmodules changes git add .gitmodules
Delete the relevant section from .git/config.
Run git rm --cached path_to_submodule (no trailing slash).
Run rm -rf .git/modules/path_to_submodule (no trailing slash).
Commit git commit -m "Removed submodule "
Delete the now untracked submodule files rm -rf path_to_submodule

JavaScript Private Class Fields

taken from https://flaviocopes.com/javascript-private-class-fields/

Introduction and code samples on using private class fields in JavaScript.

Before the introduction of private class fields, we could not really enforce private properties on a class. We used conventions instead, maybe using _ as an hint that the field is private, like this:

class Counter {

	<div
	dangerouslySetInnerHTML={{
	__html: props.house.description
	}}></div>

	const data = {
	foo: 'bar',
	falsyValue: false
	}

	// this one is good
	const containerOne = data.foo \|\| 'fallback'
	console.log('container one =', containerOne); // container one = bar

	// non existed - still "good"

	Read:
	Most of them are based on streams, like csv-parser or node-csv.

	Those are great to deal with CSV in a production system.

	I like to keep things simple when I don’t have performance in mind. For example, for a one-time parsing of CSV that I had to do to consolidate my backend systems.

	To do so, I used neat-csv, a package that exposes the csv-parser functionality to a simple async/await interface.

	Install it using npm install neat-csv and require it in your app:

	How to make a page editable in the browser
	There is a special and pretty secret mode in browsers, called design mode.


	When you set a page into design mode, you can edit the content of the page directly inside the browser page, which is very handy to test some prototype or check out how a new headline would look, for example.

	How do you enable it? Open the DevTools console, and type:

	document.designMode = 'on'


	// An example of recursive flattering of a given data (potentially multidimensional)

	// 1.
	// concat all the arrays of a given array and return a new array with a result
	const concat = arr => [].concat(...arr)

	// recursively flattern a given data into a new array (ES6)
	const flattern = el => Array.isArray(el) ? concat(el.map(flattern)) : Array.of(el)

	/**
	* Checks if dates are on the same day
	*
	* @param {Object} first First date to comapre
	* @param {Object} second Second date to compare
	*/
	const datesAreOnSameDay = (first, second) =>
	first.getFullYear() === second.getFullYear() &&
	first.getMonth() === second.getMonth() &&
	first.getDate() === second.getDate()

	const factorial = n => n < 0 ? 'n must be > 0' : n < 2 ? 1 : n * factorial(n - 1)

	for (let i = -2; i <= 10 ; i++ ) {
	console.time(`Time for ${i}`);
	console.log(`factorial(${i}) = ${factorial(i)}`)
	console.timeEnd(`Time for ${i}`)
	}

	console.log('-----')