ebidel

<!-- 
Complete feature detection for ES modules. Covers:

1. Static import: import * from './foo.js';
2. Dynamic import(): import('./foo.js').then(module => {...});

Demo: http://jsbin.com/tilisaledu/1/edit?html,output

Thanks to @_gsathya, @kevincennis, @rauschma, @malyw for the help.
-->

commenthol

const promisify = (fn) => (
  (...args) => (
    new Promise((resolve, reject) => {
      fn(...args, (err, ...res) => {
        if (err) reject(err)
        else resolve(...res)
      })
    })
  )
)

unbug

'use strict';
/* eslint-disable consistent-this */

let middlewareManagerHash = [];

/**
 * Composes single-argument functions from right to left. The rightmost
 * function can take multiple arguments as it provides the signature for
 * the resulting composite function.
 *

augbog

Free O'Reilly books and convenient script to just download them.

Thanks /u/FallenAege/ and /u/ShPavel/ from this Reddit post

How to use:

1. Take the download.sh file and put it into a directory where you want the files to be saved.
2. cd into the directory and make sure that it has executable permissions (chmod +x download.sh should do it)
3. Run ./download.sh and wee there it goes. Also if you do not want all the files, just simply comment the ones you do not want.

nolanlawson

Why we dropped Lerna from PouchDB

We dropped Lerna from our monorepo architecture in PouchDB 6.0.0. I got a question about this from @reconbot, so I thought I'd explain our reasoning.

First off, I don't want this post to be read as "Lerna sucks, don't use Lerna." We started out using Lerna, but eventually outgrew it because we wrote our own custom thing. Lerna is still a great idea if you're getting started with monorepos (monorepi?).

Backstory:

• https://pouchdb.com/2016/01/13/pouchdb-5.2.0-a-better-build-system-with-rollup.html

adamreisnz

{
  "name": "project-name",
  "description": "Template for static sites",
  "version": "1.0.0",
  "homepage": "http://www.project-name.com",
  "author": {
    "name": "Adam Reis",
    "url": "http://adam.reis.nz"
  },
  "license": "UNLICENSED",

paulirish

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

dannguyen

Using youtube-dl and gifify from the command-line

Turn this cute YouTube cat video into a briefer-but-still-cute GIF:

Software to download

• youtube-dl is a command-line tool for quickly downloading video files from a given YouTube URL

stevemao

# npm publish with goodies
# prerequisites:
# `npm install -g trash conventional-recommended-bump conventional-changelog conventional-github-releaser conventional-commits-detector json`
# `np` with optional argument `patch`/`minor`/`major`/`<version>`
# defaults to conventional-recommended-bump
# and optional argument preset `angular`/ `jquery` ...
# defaults to conventional-commits-detector
np() {
    travis status --no-interactive &&
    trash node_modules &>/dev/null;

Natetronn

# http://editorconfig.org
root = true

[*]
indent_style = space
indent_size = 2
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true