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@kettanaito
kettanaito / compose.ts
Last active March 3, 2021 00:18
TypeScript snippets
// Source: https://medium.com/@minaluke/typescript-compose-function-b7512a7cc012
type ArityOneFn = (arg: any) => any
type PickLastInTuple<T extends any[]> = T extends [
...rest: infer U,
argn: infer L
]
? L
: never
type FirstFnParameterType<T extends any[]> = Parameters<PickLastInTuple<T>>[any]
type LastFnParameterType<T extends any[]> = ReturnType<T[0]>
@aleclarson
aleclarson / rollup-typescript.md
Last active May 6, 2024 19:37
The best Rollup config for TypeScript libraries

Features

🔥 Blazing fast builds
😇 CommonJS bundle
🌲 .mjs bundle
.d.ts bundle + type-checking
🧐 Source maps

Install

@ahtcx
ahtcx / deep-merge.js
Last active May 10, 2024 14:29
Deep-Merge JavaScript objects with ES6
// ⚠ IMPORTANT: this is old and doesn't work for many different edge cases but I'll keep it as-is for any of you want it
// ⚠ IMPORTANT: you can find more robust versions in the comments or use a library implementation such as lodash's `merge`
// Merge a `source` object to a `target` recursively
const merge = (target, source) => {
// Iterate through `source` properties and if an `Object` set property to merge of `target` and `source` properties
for (const key of Object.keys(source)) {
if (source[key] instanceof Object) Object.assign(source[key], merge(target[key], source[key]))
}
@paulirish
paulirish / what-forces-layout.md
Last active May 9, 2024 07:00
What forces layout/reflow. The comprehensive list.

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
@learncodeacademy
learncodeacademy / pubsub.js
Created July 29, 2015 02:54
Basic Javascript PubSub Pattern
//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]) {
@maartenba
maartenba / DomainTemplateRoute - GetVirtualPath
Last active May 15, 2023 07:30
ASP.NET MVC 6 / ASP.NET 5 Domain Routing + Tenant Middleware
public string GetVirtualPath(VirtualPathContext context)
{
foreach (var matcherParameter in _matcher.Template.Parameters)
{
context.Values.Remove(matcherParameter.Name); // make sure none of the domain-placeholders are appended as query string parameters
}
return _innerRoute.GetVirtualPath(context);
}
@zenorocha
zenorocha / README.md
Last active April 6, 2024 16:59
A template for Github READMEs (Markdown) + Sublime Snippet

Project Name

TODO: Write a project description

Installation

TODO: Describe the installation process

Usage

@michaelcox
michaelcox / SpecRunner.js
Last active January 11, 2024 06:05
Browser Unit Testing with Backbone Mocha Chai and RequireJS
require.config({
baseUrl: '/backbone-tests/',
paths: {
'jquery' : '/app/libs/jquery',
'underscore' : '/app/libs/underscore',
'backbone' : '/app/libs/backbone',
'mocha' : 'libs/mocha',
'chai' : 'libs/chai',
'chai-jquery' : 'libs/chai-jquery',
'models' : '/app/models'
@douglas
douglas / update_git_repos.sh
Created October 14, 2011 15:04
Update all git repositories under a base directory
#!/bin/bash
# store the current dir
CUR_DIR=$(pwd)
# Let the person running the script know what's going on.
echo "\n\033[1mPulling in latest changes for all repositories...\033[0m\n"
# Find all git repositories and update it to the master latest revision
for i in $(find . -name ".git" | cut -c 3-); do