Question 1

How to filter object properties based on value in JavaScript?

Accepted Answer

filter-obj makes this easy with its predicate function: use includeKeys(object, (key, value) => value === true) to keep only true values. It's cleaner than manual Object.entries filtering and handles immutability automatically.

Question 2

Does filter-obj work with Symbol keys?

Accepted Answer

Yes, it explicitly supports Symbol keys alongside string keys, as mentioned in the README. This is useful for modern JavaScript applications using Symbols for unique property identifiers.

Question 3

filter-obj vs lodash pick: which is better?

Accepted Answer

filter-obj is lighter and focused solely on filtering, with zero dependencies, while Lodash's pick is part of a larger library. Choose filter-obj for minimal overhead, but Lodash if you need deep filtering or other utilities.

Question 4

How to exclude multiple keys from an object?

Accepted Answer

Use excludeKeys with an array: excludeKeys(object, ['key1', 'key2']) returns a new object without those keys. It's simpler than manually deleting properties and avoids mutation.

Question 5

Is filter-obj immutable?

Accepted Answer

Yes, it always returns a new object, leaving the original unchanged. This aligns with functional programming principles and prevents unintended side effects in your code.

Question 6

Can I use filter-obj in Node.js?

Accepted Answer

Absolutely, it's an npm package compatible with Node.js and modern JavaScript environments. Install via npm install filter-obj and import it as shown in the README.

filter-obj

What is filter-obj?

Overview

Use Cases

Best For

Related Projects

Found a gem we're missing?

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions