nested-search-non-recurse-BF.js

function containsInNestedObjectBF(obj, val) {
	
  const queue = [obj];
  while (queue.length > 0) {

    const currentObj = queue.shift();
    if (currentObj === val) {
      return true;
    }

    const keys = currentObj instanceof Object ? Object.keys(currentObj) : [];

    for (const key of keys) {

      const objVal = currentObj[key];

      queue.push(objVal);
    }
  }
  
  return false;
}

var nestedObject = {
  data: {
    info: {
      stuff: {
        thing: {
          moreStuff: {
            something: 'foo2',
            someVal: 40
          }
        }
      }
    }
  }
}

let hasIt = containsInNestedObject(nestedObject, 40); // true
let doesntHaveIt = containsInNestedObject(nestedObject, "foo"); // false

console.log(hasIt, doesntHaveIt);