Remove undefined or null fields from json by Lodash

Question

consider following json:

const obj = {
   limit: 0,
   lastName: null,
   firstName: 'John',
   age: undefined
}

I need to remove lastName and age, and keep limit and firstName. I tried this _.pickBy(obj, !_.isNil) but it gives me empty object {} and I don't understand why. What am I doing wrong?

When I tried _.pickBy(obj, _.isNil) then keeps lastName and age, which is correct.

Answer 1

Try omitBy :

 const obj = { limit: 0, lastName: null, firstName: 'John', age: undefined } const res = _.omitBy(obj, _.isNil); console.log(res);

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