react-redux-provide/src/getRelevantKeys.js

Build your UI with React. Manage application state with Redux providers. Persist and share application state with replication. Use pure functions everywhere.

export default function getRelevantKeys(a = {}, b = {}) {
  const relevantKeys = [];

  if (typeof b === 'object') {
    for (let key in b) {
      if (key in a) {
        relevantKeys.push(key);
      }
    }
  }

  return relevantKeys;
}