Count Object Fields

countObjectFields

Counts the number of enumerable properties in an object.

Import

import { countObjectFields } from 'nhb-toolbox';

Usage

Basic Usage

const obj = { a: 1, b: 2, c: 3 };
const count = countObjectFields(obj); // Returns 3

With Null/Undefined

const count = countObjectFields(null); // Returns 0

API

Type Parameters

Parameter	Description
T	A generic object type

Parameters

Parameter	Type	Description
obj	T	The object to count properties of

Return Value

number: The count of enumerable properties, or 0 if the object is null/undefined.

Examples

Simple Object

const user = {
  id: 1,
  name: 'John Doe',
  email: 'john@example.com'
};

const fieldCount = countObjectFields(user); // 3

Empty Object

const emptyObj = {};
const fieldCount = countObjectFields(emptyObj); // 0

Edge Cases

// Null case
countObjectFields(null); // 0

// Undefined case
countObjectFields(undefined); // 0

Notes

• This function only counts enumerable properties (same behavior as Object.keys())
• Non-object values will return 0
• Symbol-keyed properties are not counted
• Inherited properties are not counted (only own properties)