react-facebook-next/src/utils/clearUndefinedProperties.js

Facebook components like a Login button, Like, Share, Comments or Embedded Post

export default function clearUndefinedProperties(obj) {
  if (!obj) {
    return obj;
  }

  const newObj = {};

  Object.keys(obj).forEach((propertyName) => {
    const value = obj[propertyName];
    if (value !== undefined) {
      newObj[propertyName] = value;
    }
  });

  return newObj;
}