bearzk

module.exports = {
  'env': {
    'browser': true,
    'es2021': true
  },
  'extends': [
    // "standard-with-typescript",
    'eslint:recommended',
    'plugin:react/recommended',
    'plugin:import/errors',

bearzk

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

brew install fzf node raycast obsidian bitwarden zsh iterm2 localstack slack orbstack autojump bat the_silver_searcher jq go python vim netnewswire keycastr awscli redisinsight keybase obs insomnium grammarly-desktop vscodium git neteasemusic fortune httpie iterm2 zed marta vlc starship

# hold keys should repeat it in the app
# defaults domains | grep codium
defaults write com.vscodium ApplePressAndHoldEnabled -bool false

bearzk

Idempotent array push

db.myRecords.findAndModify(
    {
      _id: recordId, 
      itemArray: {$not: { $elemMatch: { itemId: newItem.id } }}
    },
    { 
      $push: {itemArray: newItem}

bearzk

Single Table Design for Dashboards

basic concept to read: https://www.dynamodbguide.com/

Also, as MongoDB is much more flexible about indices than DDB, it's less dangerous to try out STD in MongoDB.

Table Design

basic

bearzk

async await non-blocking

In the context of the node process that handles multiple http requests, async await is non-blocking. Though in each request, async await will block.

See this example, calling the 2 endpoints /fast and /slow, /slow will respond after 3 seconds, you can call the /fast

bearzk

async function streamToString(stream) {
  return await new Promise((resolve, reject) => {
    const chunks = [];
    stream.on('data', (chunk) => chunks.push(chunk));
    stream.on('error', reject);
    stream.on('end', () => resolve(Buffer.concat(chunks).toString('utf-8')));
  });
}

bearzk

docker cli crash course

TL;DR

you have docker installed on your system, you want to install the services we use for API project

$ docker run -d --name mongo4.4 -p 27017:27017 mongo:4.4

$ docker run -d --name rabbitmq -p 4369:4369 -p 5671-5672:5671-5672 -p 15671-15672:15671-15672 -p 15691-15692:15691-15692 -p 25672:25672 rabbitmq:3.8-management-alpine

bearzk

# put setup script here
# - create default config file
# - etc

echo "########################"
echo "## setting up project ##"
echo "########################"
echo
echo

bearzk

const { pipeline: pipelineAsCallback, Transform, Readable } = require('stream');
const { promisify } = require('util');
const pipeline = promisify(pipelineAsCallback);

const debugStream = new Transform({
  objectMode: true,

  transform(chunk, encoding, callback) {
    console.log('chunk');
    console.log(JSON.stringify(chunk, null, 2));

bearzk

plus(1, 2) // this won't complain, as add() is hoisted
minus(2, 1) // this will complain, as minus is defined later

// expression
function plus(x, y) {
  return x + y;
}

// declaration
const minus = function (x, y) {