Flatten an object or get the deep keys of one

objectFlatten.js

function getDeepKeys(obj,key,d="/"){
	if(typeof(obj)!=="object")return null;
	var arr=[];
	for(let i in obj){
		if(typeof(obj[i])==="object")arr=arr.concat(getDeepKeys(obj[i],key?key+d+i:i));
		else arr.push(key?key+d+i:i);
	}
	return arr;
}

function objectFlatten(obj,key,d="/"){
	if(typeof(obj)!=="object")return null;
	var arr={};
	for(let i in obj){
		if(typeof(obj[i])==="object"){
			let o=objectFlatten(obj[i],key?key+d+i:i);
			for(let n in o) arr[n]=o[n];
		}
		else arr[key?key+d+i:i]=obj[i];
	}
	return arr;
}