mathjs/lib/utils/boolean.js

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser and offers an integrated solution to work with numbers, big numbers, complex numbers, units, and matrices.

'use strict';

/**
 * Test whether value is a boolean
 * @param {*} value
 * @return {boolean} isBoolean
 */
exports.isBoolean = function(value) {
  return typeof value == 'boolean';
};