Tiago Celestino tcelestino

ES6 Defaults / Overrides Pattern

Combine default parameters and destructuring for a compact version of the defaults / overrides pattern.

function foo ({
    bar = 'no',
    baz = 'works!'
  } = {}) {

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

Below is the list of modern JS frameworks and almost frameworks – React, Vue, Angular, Ember and others.

All files were downloaded from https://cdnjs.com and named accordingly. Output from ls command is stripped out (irrelevant stuff)

As-is (minified)

$ ls -lhS
566K Jan 4 22:03 angular2.min.js

These files show one way to make the next.js "with-global-stylesheet" example work with the amazingly awesome Storybook ecosystem.

Specifically, the three files below replace the next.config.js file, in the "with-global-stylesheet" example.

More generically, they demonstrate how to share webpack configuration extensions between next.js and Storybook.

A massive THANK YOU to tmeasday for all his help to get these working!

	/* bling.js */
	window.$ = document.querySelector.bind(document);
	window.$$ = document.querySelectorAll.bind(document);
	Node.prototype.on = window.on = function(name, fn) { this.addEventListener(name, fn); };
	NodeList.prototype.__proto__ = Array.prototype;
	NodeList.prototype.on = function(name, fn) { this.forEach((elem) => elem.on(name, fn)); };

	var active = false;

	function changeRefer(details) {
	if (!active) return;

	for (var i = 0; i < details.requestHeaders.length; ++i) {
	if (details.requestHeaders[i].name === 'Referer') {
	details.requestHeaders[i].value = 'http://www.google.com/';
	break;
	}

	#!/usr/bin/env bash

	# A basic Self Signed SSL Certificate utility
	# by Andrea Giammarchi @WebReflection

	# https://www.webreflection.co.uk/blog/2015/08/08/bringing-ssl-to-your-private-network

	# # to make it executable and use it
	# $ chmod +x certificate
	# $ ./certificate # to read the how-to

	'use strict';

	// Licensed under a CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
	// http://creativecommons.org/publicdomain/zero/1.0/

	(function() {

	// Update 'version' if you need to refresh the cache
	var staticCacheName = 'static';
	var version = 'v1::';

	# My Chrome developer profile is in the `Profile 1` directory, make sure to update with yours.
	# Best on an ultra wide monitor.

	function rwdurl() {
	open -n -g -a "Google Chrome" --args --new-window --profile-directory=Profile\ 1 --app="data:text/html,<html><body><script>window.moveTo(0,0);window.resizeTo(320,1395);window.location='$1';</script></body></html>"
	open -n -g -a "Google Chrome" --args --new-window --profile-directory=Profile\ 1 --app="data:text/html,<html><body><script>window.moveTo(330,0);window.resizeTo(480,1395);window.location='$1';</script></body></html>"
	open -n -g -a "Google Chrome" --args --new-window --profile-directory=Profile\ 1 --app="data:text/html,<html><body><script>window.moveTo(815,0);window.resizeTo(640,1395);window.location='$1';</script></body></html>"
	open -n -g -a "Google Chrome" --args --new-window --profile-directory=Profile\ 1 --app="data:text/html,<html><body><script>window.moveTo(1460,0);window.resizeTo(800,1395);window.location='$1';</script></body></html>"
	open -n

	console.log(1);
	(_ => console.log(2))();
	eval('console.log(3);');
	console.log.call(null, 4);
	console.log.apply(null, [5]);
	new Function('console.log(6)')();
	Reflect.apply(console.log, null, [7])
	Reflect.construct(function(){console.log(8)}, []);
	Function.prototype.apply.call(console.log, null, [9]);
	Function.prototype.call.call(console.log, null, 10);