localbase/localbase/utils/isSubset.js

A Firebase-Style Database ... Offline!

export default function isSubset(superObj, subObj) {
  return Object.keys(subObj).every(ele => {
      if (typeof subObj[ele] == 'object') {
          return isSubset(superObj[ele], subObj[ele]);
      }
      return subObj[ele] === superObj[ele]
  });
}