Sam Artuso sam-artuso

Yarn is the new fancy NPM client by Facebook. Compared to the good ol' npm command line client, Yarn is faster and provides by default what you can achieve with npm shrinkwrap. It's even got fancier output. Emojis apart, its output is more succinct than npm's, which spits out a lot of things I don't really want to know about.

After switching to Yarn I found out how much I rely on muscular memory when typing on my keyboard. I found myself typing by mistake npm install when I should've typed yarn add When this happens, the yarn.lock file stops reflecting what is installed in the node_modules/ directory.

My solution to this problem was to alias npm like below. This alias will check if yarn.lock exists, stop me and even tell me off.

npm='test -e yarn.lock && >&2 echo "yarn.lock found in current directory. Use yarn instead." || npm'

Setting up Babel and nodemon

Inital set-up

Set up project:

mkdir project
cd project
npm init -y

	import { type OnModuleInit } from '@nestjs/common';
	import { Injectable } from '@nestjs/common';
	import { httpFetchJson } from '@recharge/http';
	import tracer from 'dd-trace';

	import { AkeneoConfigService } from '../config/akeneo-config.service';
	import { type AkeneoAuthenticationResponse } from './entity/akeneo-token-entity';

	const refreshTokenDefaultExpiry = 1209600;

	// flatten a tree of arbitrary depth and complexity

	class WalkableTree {
	constructor(data) {
	this.data = data
	}

	*[Symbol.iterator]() {
	for (let value of this.data) {
	if (Array.isArray(value)) {

	// demo.js
	function f() {
	return Promise.resolve(true)
	}

	function g() {
	Promise.resolve(true)
	}

	module.exports = { f, g }

	#!/bin/bash

	foo='Follow the white rabbit.'
	# sleep 3
	sudo echo > /dev/tty1
	for (( i=0; i<${#foo}; i++)); do
	sudo echo -n "${foo:$i:1}" > /dev/tty1; sleep .1
	done;
	sudo echo > /dev/tty1