Find a property that has a certain value and return its object path starting at the root object parameter

findPropertyValue.js

// FIXME: this can very rapidly hit the call stack size limit

function findPropertyValue(obj, value) { 
  if (typeof obj.seenBefore === "undefined") {
    // treat for object graph circularity
    obj.seenBefore = true; 
    
    for (var key in obj) {
      if (obj[key] == value) {
        return key;
      } else {
        if (obj[key]) {
          var foundIt = findInput(obj[key], value);
          if (foundIt) {
            return key + '.' + foundIt;
          }
        }
      }
    }
  }
  return false;
};