empty values.js

const removeEmptyValues = val => {
  const isInvalid = value => value === null || value === '' || value === false;
  if (isInvalid(val)) return;
  if (Array.isArray(val)) {
    return val.map(removeEmptyValues).filter(val => val !== undefined);
  } else if (typeof val === 'object') {
    const entries = Object.entries(val).filter(([, value]) => !isInvalid(value));
    return Object.fromEntries(entries.map(([key, value]) => [key, removeEmptyValues(value)]));
  }
  return val;
};