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const isSubset = (arr1, arr2) => {
  for (let i = 0; i < arr2.length; i++) {
    if (!arr1.find(ele => ele === arr2[i])) {
      // console.log(item);
      return false;
    }
  }

  return true;
};

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.site{
  display:grid;
  grid-template-columns:2fr 1fr;
  grid-template-areas:"header header"
                      "title sidebar"
                      "main sidebar"
                      "footer footer";  
}
.site > *{padding:30px; color:#fff; font-size:20px;}
.mastheader{   grid-area:header; }

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// Error Object
const Error = new Error(‘please improve your code’)
Error.message //please improve your code
Error.stack

//Error: please improve your code
// at Object.<anonymous> (/Users/gisderdube/Documents/_projects/hacking.nosync/error-handling/src/general.js:1:79)
// at Module._compile (internal/modules/cjs/loader.js:689:30)
// at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
// at Module.load (internal/modules/cjs/loader.js:599:32)

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# require express 
# optional mongoDB and body-parser

const express = require('express');
const mongoose = require("mongoose");
const bodyParesr = require("body-parser");

require("") //schema for mongodb

const app = express();

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inner border radius = border radius - border width (border radius > border width)

.app{
  border-radius: 10px;
  border-width: 8px
}

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// can make a parameter optional
// make the return value much richer

const human = ({name, contact, age}={}) => {
  return {name, contact, age}
}

const Paul = human({name="Paul", age="32"})

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// how to do inheritance
// passing in the prototype function
// Object.freeze make only shallow copies

function makeProductList({ productDb }) {
  return Object.freeze({
    addProduct,
    empty,
    getProducts,
    removeProduct,

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const dog = () => {
  const sound = "woof!"
  return {
    bark: ()=>{console.log(sound)}
  }
}

const sniffles = dog();
sniffles.talk() //output: "woof!"

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import fs from 'fs';

// read file
function jsonReader(filePath, cb) {
    fs.readFile(filePath, (err, fileData) => {
        if (err) {
            return cb && cb(err)
        }
        try {
            const object = JSON.parse(fileData)

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// setState within syntheitc event
// setState is async, by the time the action finished, 
// event.target.value is no longer the same
// so need event.persist() to maintain the value
//  if you want to access currentTarget in async way, you need to cache it in a variable as you did in your answer.
const Searchbar = ({getNutrition}) => {
    const [searchState, setSearchState] = useState("ingredient")
    

    const selValue = (ev) => {