John Raymon john-raymon

AWS SAM local commands without Docker Desktop

AWS SAM local commands check for the existance of DOCKER_HOST. If the variable is not present, it will fail with the following error message

Error: Running AWS SAM projects locally requires Docker. Have you got it installed and running?

Replace it with Colima

Point DOCKER_HOST to unix socket of the Docker Daemon.

Do not use forEach with async-await

TLDR: Use for...of instead of forEach() in asynchronous code.

For legacy browsers, use for...i or [].reduce()

To execute the promises in parallel, use Promise.all([].map(...))

The problem

git branch --set-upstream-to <remote-branch>
# example
git branch --set-upstream-to origin feature-branch

# show up which remote branch a local branch is tracking
git branch -vv

sets the default remote branch for the current local branch.

	// 17 feb 2022

	// Answer to Jamon Holmgren's challenge tweet
	// https://twitter.com/jamonholmgren/status/1494385356925390853

	// K is a null-safe, NaN-safe, primitive-safe, object key value function for
	// generating array diffs and intersections.

	// Changelog:
	// Started with reduce, then filter/includes, then saw Jamon's follow-up tweet regarding

	const fs = require("fs");

	// "4\n1\n2\n5\n3"
	const input = fs.readFileSync(0).toString();

	// [4, 1, 2, 5, 3]
	const lines = input.split("\n").map((n) => parseInt(n, 10));

	const T = parseInt(lines[0], 10);

	const d = new Date()

	// convert to msec since Jan 1 1970
	const localTime = d.getTime()

	// obtain local UTC offset and convert to msec
	const localOffset = d.getTimezoneOffset() * 60 * 1000

	// obtain UTC time in msec
	const utcTime = localTime + localOffset

	const WebSocket = require('ws');

	// Core solver logic, stubbed out for example
	async function* slow() {
	yield 'starting...';
	await new Promise(resolve => setTimeout(resolve, 10 * 1000));

	// Use `yield` to report on progress
	yield 'loading data...';
	await new Promise(resolve => setTimeout(resolve, 10 * 1000));

	#!/usr/bin/env bash
	set -eu -o pipefail
	# Script expects these binaries to be present:
	# - wget
	# - node
	# Tested on Mac.

	# Example:
	#
	# bash sizeOfStringInUrl.sh nextjs.org "\bcreateElement\b"

	const mock = (success, timeout = 1000) => {
	return new Promise((resolve, reject) => {
	setTimeout(() => {
	if(success) {
	resolve();
	} else {
	reject({message: 'Error'});
	}
	}, timeout);
	});

	const canvas = fabric.createCanvasForNode(width, height);

	canvas.contextCache.constructor.prototype.getFontSize = function getFontSize() {
	return 1 * this.font.split('-')[1];
	};

	canvas.contextCache.constructor.prototype.getFontFamily = function getFontFamily() {
	return this.font.split('-')[0]
	};