is-boolean-object

What is is-boolean-object?

The is-boolean-object npm package is a utility that allows you to determine if a given value is a boolean object. This can be particularly useful in scenarios where you need to validate or enforce data types in your JavaScript code.

What are is-boolean-object's main functionalities?

Check if a value is a boolean object

This feature allows you to check if a given value is a boolean object. The code sample demonstrates how to use the is-boolean-object package to differentiate between primitive boolean values and boolean objects.

const isBooleanObject = require('is-boolean-object');

console.log(isBooleanObject(true)); // false
console.log(isBooleanObject(false)); // false
console.log(isBooleanObject(new Boolean(true))); // true
console.log(isBooleanObject(new Boolean(false))); // true

Other packages similar to is-boolean-object

is-boolean

The is-boolean package is a utility that checks if a value is a boolean primitive. Unlike is-boolean-object, it does not check for boolean objects created with the Boolean constructor.

lodash.isboolean

The lodash.isboolean package is part of the Lodash library and checks if a value is a boolean primitive. It is similar to is-boolean but is part of a larger utility library, offering more functionality beyond just type checking.

is-primitive

The is-primitive package checks if a value is a primitive type, including boolean primitives. It does not specifically check for boolean objects, making it broader in scope compared to is-boolean-object.

README

is-boolean-object

Is this value a JS Boolean? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Example

var isBoolean = require('is-boolean-object');
var assert = require('assert');

assert.notOk(isBoolean(undefined));
assert.notOk(isBoolean(null));
assert.notOk(isBoolean('foo'));
assert.notOk(isBoolean(function () {}));
assert.notOk(isBoolean([]));
assert.notOk(isBoolean({}));
assert.notOk(isBoolean(/a/g));
assert.notOk(isBoolean(new RegExp('a', 'g')));
assert.notOk(isBoolean(new Date()));
assert.notOk(isBoolean(42));
assert.notOk(isBoolean(NaN));
assert.notOk(isBoolean(Infinity));

assert.ok(isBoolean(new Boolean(42)));
assert.ok(isBoolean(false));
assert.ok(isBoolean(Object(false)));
assert.ok(isBoolean(true));
assert.ok(isBoolean(Object(true)));

Tests

Simply clone the repo, npm install, and run npm test

Changelog

v1.2.2 - 2025-02-04

Fixed

• [Fix] do not be tricked by fake Booleans #25

Commits

• [Dev Deps] update @arethetypeswrong/cli, @ljharb/tsconfig, @types/tape, core-js a27608b
• [Deps] update call-bound b19953f