christophemarois

import { useState } from 'react'

export default function useMap<K, V>(): [
  Map<K, V>,
  {
    set: (key: K, value: V) => void
    unset: (key: K) => void
    clear: () => void
  }
] {

christophemarois

Cloudflare is a better and free ngrok. With a domain that uses it, set it up like this

1. Setup a tunnel

cloudflared tunnel login
cloudflared tunnel create test
cloudflared tunnel route dns test test.christophemarois.com

christophemarois

/** Transform the password part of a connection string URL into [redacted].
 * Useful for logging. */
export function redactPasswordFromUrl(url: string) {
  return url.replace(/^([^:]+):\/\/([^:]*):([^@]+)@/, '$1://$2:[redacted]@')
}

christophemarois

TS/JS go-to libs

Updated Jan 2024. For looking up trending newer alternatives, use npmtrends. For Nodejs, nodejstoolbox a precompiled list of trends by category.

Universal

Standard libs

Standard libs extend the runtime with convenience helpers, structures and patterns.

christophemarois

// ==UserScript==
// @name         Base64 inline images
// @author       @christophemarois
// @match        *
// @grant        GM_xmlhttpRequest
// @connect      *
// ==/UserScript==

// NOTE: NOT MEANT TO BE INSTALLED
// AS IT WILL REPLACE EVERY IMAGE ON EVERY PAGE

christophemarois

Online Music Education

🗣If you'd like to add some channels to the list, leave them in the comments below. I am aware that this is not an exhaustive list, and that some areas are probably entirely missing (cough guitar cough).

Notes

• ⭐️ = Personal faves
• Channel must be primarily teaching-oriented
• Order is alphanumeric

christophemarois

1. Create an app-specific password for iCloud account (check Bitwarden notes)
2. Use https://github.com/midnightmonster/icloud-calendar-urls to get your calendar's secret URL

curl -s https://raw.githubusercontent.com/midnightmonster/icloud-calendar-urls/master/icloud_calendar_urls | bash

3. In thunderbird, add calendar with your icloud username, secret url and app-specific password

christophemarois

Monitor in Node (PerformanceObserver is not yet implemented in Bun. in bun 1.0.3)

import { collectDefaultMetrics, register } from 'prom-client'

if (req.method === 'GET' && pathname === '/metrics/') {
  return new Response(await register.metrics(), {
    headers: {
      'Content-Type': register.contentType,
 },

christophemarois

/** Array where are elements are expected to be unique by a custom key */
export function zUniqueArray<
  ArrSchema extends z.ZodArray<z.ZodTypeAny, 'many'>,
  UniqueVal,
>(
  uniqueBy: (item: z.infer<ArrSchema>[number]) => UniqueVal,
  schema: ArrSchema,
) {
  return schema.superRefine((items, ctx) => {
    const seen = new Set<UniqueVal>()

christophemarois

Run a local Dockerfile with a local .env file

docker build \

Show complete log

--progress=plain \

Nested dockerfile, useful for monorepos when we want to preserve CWD