Yes, I know, there is already a question about how to filter objects in javascript, but look, I'm not asking how to do it, I'm asking about what would be the easiest way, the one which a noob like me could remember.

Before ask I spent a little time and after some tests I came up with theses solutions. They are examples but I cannot think about something better by now:

function queryHandlerOne(query: any) {
  const fields = ["name", "featured", "price", "company", "rating"];
  
  const entries = Object
    .entries(query)
    .filter(([key, _]) => fields.includes(key));

  return Object.fromEntries(entries);  
}

function queryHandlerTwo(query: any) {
  const fields = ["name", "featured", "price", "company", "rating"];

  const entries = Object
    .keys(query)
    .filter(key => fields.includes(key))
    .reduce((acc, key) => {
      acc[key] = query[key];
      return acc;
    }, {} as any);

  return entries;
}

function queryHandlerThree(query: any) {
  const fields = ["name", "featured", "price", "company", "rating"];

  const result = Object
    .keys(query)
    .filter(key => fields.includes(key))
    .map(key => [key, query[key]] as [string, any]);

  return Object.fromEntries(result);
}

function queryHandlerFour(query: any) {
  const fields = ["name", "featured", "price", "company", "rating"];
  const result = {};

  Object
    .keys(query)
    .filter(key => fields.includes(key))
    .forEach(key => Object.assign(result, { [key]: query[key] }));

  return result;
}