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/**
 * A recursive function that applies a callback to nodes in a tree (may include Maps and Arrays).
 * @param {*} tree the tree to walk
 * @param {walkTreeCb} callback function to apply to nodes that pass the filter function, passed a node, index, and depth. Return true to walk a node that matches the filter.
 * @param {walkTreeFilterFunc=} filter a filter function to apply. If not specified will callback for leaf nodes only (not Maps or Arrays). Return true to apply callback.
 * @param {number=} i index into array or -1 if parent is an object. Not normally specified in initial call
 * @param {number=} d the depth. Not normally specified in initial call
 * @param {[]=} k list of ancestor keys. Not normally specified in initaial call
 * @param {[]=} a list of ancestor objects. Not normall specified in initial call
 * @param {boolean=} walkCyclic indicates cyclic references should be walked. Callback must handle short circuiting by return false.

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/**
 * Render a number as a fraction
 * @param {number} v the decimal value to convert to a fraction
 * @param {number[]} denom the list of denominators
 * @returns {string} the fraction closest to the decimal value
 */
const toFraction = (v, denom=[2,3,4,7,8,10,16,32,64,100]) => {
  denom = denom.sort((a,b)=>a-b)

  // whole and fractional parts

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const noVowelsToUpper = key => key.match(/[aeiouy]/) ? key : key.toUpperCase()

const lowerCaseTwoLetter = w => {
  const words = [ 'of', 'to', 'in', 'it', 'is', 'as', 'at', 'by', 'or', 'on', 'if', 'an' ]
  if (w.length === 2 && words.indexOf(w.toLowerCase()) >= 0) return w.toLowerCase()
  return w
}
const upperCaseTwoLetter = w => {
  const words = [ 'CA', 'ID' ]
  if (w.length === 2 && words.indexOf(w.toUpperCase()) >= 0) return w.toUpperCase()

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A react hook to sync useState with useSearchParams

Usage

useSearchState is used similarly to useState in that it returns a value and setter. The simplest use case is to tie the value to the search params with a key.

MyComponent.tsx

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Two Github Accounts

My workplace has recently begun using github-enterprise hosted by github in the cloud, rather than using github-enterprise in a self-hosted environment. This means that I now have another account tied to my company user-identity which conflicted with my git ssh configuration.

I wasn't thrilled with the other solutions I'd found to manage two accounts:

• Shell script wrappers around git that set the SSH_COMMAND environemnt varialbe on the fly, and
• Changing the origin in the repo's .git/config to use a fake hostname (github.com-personal) and map the fake hostname in ~/.ssh/config.

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A couple of alias to remind me how to change colors in bash or zsh

in ~/.bashrc or ~/.zshrc

alias colors='for ((i=30;i<=37;i++));do echo -e "\033[0;"$i"m echo -e \"\\\033[0;"$i"m"\";done;echo -e "\033[0;m echo -e \"\\\033[0;m\""'

alias declare_clr='\
  echo "declare -A clr";
  for a in 30m/black 31m/red 32m/green 33m/yellow 34m/purple 35m/magenta 36m/cyan 37m/white m/reset; do \

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module.exports = withShutdown

// This may be unnessary with server.closeIdleConnections and server.closeAllConnections added in Node v18.2.0.

/**
 * Adds a shutdown function that destroys active connections
 * (such as keep-alive). Idle connections end immediately,
 * others are destroyed after all data is written.
 * 
 * @param {http.Server} server http.Server instance

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#!/bin/bash
tmp=$(mktemp -d -t tmp.XXXXXXXXXX)
function finish {
  rm -rf "$tmp"
}
trap finish EXIT

OPTS=""
if [[ $1 == --region ]]; then
  OPTS="--region $2"

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#
# This file should be sourced from ~/.bashrc or ~/.zshrc
#
#   export VAULT_ADDR=<your vault URL>
#   source ~/.yv-funcs
#
# It requires yq, gdate, and gum to be installed (brew install yq coreutils gum)
#
# It requires a yaml file ~/.yv-funcs.rc to contain entries:
#

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// npm i express@^4.15.2 @aws-sdk/client-s3@^3.540.0

import { Request, Response, Router } from 'express'
import { GetObjectCommand, HeadObjectCommand, S3Client } from '@aws-sdk/client-s3'
const router = Router()

/** stream a video from S3 */
router.get('/:filepath(*.mp4)', async (req: Request, res: Response) => {
  const filepath = req.params.filepath || req.params[0]
  const range = req.headers.range;