Joshua Levy jlevy

Pure ESM package

The package that linked you here is now pure ESM. It cannot be require()'d from CommonJS.

This means you have the following choices:

Use ESM yourself. (preferred)
Use import foo from 'foo' instead of const foo = require('foo') to import the package. You also need to put "type": "module" in your package.json and more. Follow the below guide.
If the package is used in an async context, you could use await import(…) from CommonJS instead of require(…).
Stay on the existing version of the package until you can move to ESM.

Overview

Problem

If you use Segment's Google Analytics server-side integrations, even if you follow all of their documentation / recommendation, it is impossible to properly track your visitors/sessions in GA from anonymous through identified.

This means that if you use Segment like this, you cannot do very basic things in GA like understanding attribution of your product's sign ups. In GA, a brand new session is created for the identified users, which is not correct.

This problem applies to using Segment on the web with analytics.js when the Google Analytics Destination is set to Cloud Mode, or when using a true server-side Source such as Python/Ruby/Node.

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

Ctrl-Key: ^[
Octal: \033
Unicode: \u001b
Hexadecimal: \x1B
Decimal: 27

Hyperlinks (a.k.a. HTML-like anchors) in terminal emulators

[ Update 2025-03-24: Commenting is disabled permanently. Previous comments are archived at web.archive.org. ]

Most of the terminal emulators auto-detect when a URL appears onscreen and allow to conveniently open them (e.g. via Ctrl+click or Cmd+click, or the right click menu).

It was, however, not possible until now for arbitrary text to point to URLs, just as on webpages.

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

Sessions

Code	Title	Duration	Link
Keynote	Andy Jassy Keynote Announcement Recap	0:01	https://www.youtube.com/watch?v=TZCxKAM2GtQ
Keynote	AWS re:Invent 2016 Keynote: Andy Jassy	2:22	https://www.youtube.com/watch?v=8RrbUyw9uSg
Keynote	AWS re:Invent 2016 Keynote: Werner Vogels	2:16	https://www.youtube.com/watch?v=ZDScBNahsL4
Keynote	[Tuesday Night Live with Jame

	#!/usr/bin/env -S uv run --script
	# /// script
	# requires-python = "==3.13"
	# dependencies = [
	# "requests>=2.32.3",
	# "rich>=14.0.0",
	# "markdownify>=1.1.0",
	# "readabilipy>=0.3.0",
	# ]
	# ///

	// These hashes are for algorithmic use cases, such as bucketing in hashtables, where security isn't
	// needed and 32 or 64 bits is enough (that is, rare collisions are acceptable). These are way simpler
	// than sha1 (and all its deps) or similar, and with a short, clean (base 36 alphanumeric) result.

	// A simple, insecure 32-bit hash that's short, fast, and has no dependencies.
	// Output is always 7 characters.
	// Loosely based on the Java version; see
	// https://stackoverflow.com/questions/6122571/simple-non-secure-hash-function-for-javascript
	const simpleHash = str => {
	let hash = 0;

	#!/bin/bash
	# Convenience script to pretty-print and browse colored JSON without remembering flags.
	# Read from files or stdin.
	jq -C . "$@" \| less -R -m

	#!/bin/bash

	set -euo pipefail

	file1="${1:?

	Usage: $(basename $0) file1.json file2.json

	Show diff of JSON, normalizing key ordering.
	}"