Lookup corresponding Description, given a Code

LookupDescByCode.js

/* Usage: 
	node LookupDescByCode
You can ommit '.js'
Using a constant lookup Structure (either Array or Obj), fetch the Code+Desc, given the Code.
*/

const CodeDescArrMap = [
		{Code: 'Z101', Desc: "Apples"},
		{Code: 'Z201', Desc: "Bananas"},
		{Code: 'Z301', Desc: "Oranges"}
	];
	
//ALTternative: use Object.
const CodeDescObjMap = {
	Z101 : "Apples",
	Z201 : "Bananas",
	Z301 : "Oranges"
};


//given say, Z101, return code+Desc.
getDescByCode = (code) => {
	let desc = CodeDescObjMap[code]; //using Array-syntax to retrieve .PropVal by .Prop
	if (desc) //truthy, if found (else undefined)
		return code + ' - ' + desc;
	else
		return code; //just the input code
}
getDescByCodeALT = (code) => {
	let foundItem = CodeDescArrMap.filter( function (item, idx) {
		return item.Code === code; //add item to NEW ARRAY if it satisfies criteria; i.e. *** LHS foundItem is AN ARRAY !!!
	});
//note 1)if NOT found, LHS is empty array; 2)empty-array [] and empty-object {} are truthy.. WTF?
	if (foundItem.length) //non-zero is truthy, you dont have to explicitly check for .length > 0
		return code + ' - ' + foundItem[0].Desc;
	else 
		return code; //just the input code
			
}

let rtnVal = getDescByCode('Z101');
console.log(rtnVal);

let rtnVal2 = getDescByCodeALT('Z201');
console.warn(rtnVal2);