String Utils

String Utils provides helpers for common string checks. Use it when you need to treat null, undefined, or blank strings as empty (e.g. for validation or conditional rendering).

Import

import { isBlankOrEmpty } from '@js-smart/react-kit';

Basic usage

isBlankOrEmpty('');        // true
isBlankOrEmpty('   ');    // true (trimmed)
isBlankOrEmpty(null);     // true
isBlankOrEmpty(undefined); // true
isBlankOrEmpty('hello');  // false

With form validation

if (isBlankOrEmpty(name)) {
  setError('Name is required');
}

With optional display

{!isBlankOrEmpty(description) && <p>{description}</p>}

API Reference

isBlankOrEmpty

Returns true if the value is null, undefined, or a string that is empty or only whitespace after trim. Returns false for any other value (including non-string types).

Parameter	Type	Description
value	any	Value to check.

Returns: boolean