isBoolean#

Check if the given value is a boolean.

Usage Scenarios#

• Data Validation: When processing user input or data from an API, you need to ensure that a certain value is a boolean before making logical decisions.
• Function Parameter Validation: In a function, when a boolean is expected as a parameter, you can use the isBoolean method to verify the parameter type, avoiding errors caused by passing non - boolean values.
• Conditional Judgment: Execute different logic based on whether a value is a boolean.

Examples#

import { isBoolean } from 'funtool';

isBoolean(true); // ✅ true
isBoolean('true'); // ❌ false

Signature#

function isBoolean(v: any): v is boolean

Parameters#

• v (any): The value to test if it is a boolean.

Returns#

• (v is boolean): Returns true if the value is a boolean, otherwise returns false.