source: imaps-frontend/node_modules/is-boolean-object/index.js

'use strict';

var callBound = require('call-bind/callBound');
var $boolToStr = callBound('Boolean.prototype.toString');
var $toString = callBound('Object.prototype.toString');

var tryBooleanObject = function booleanBrandCheck(value) {
        try {
                $boolToStr(value);
                return true;
        } catch (e) {
                return false;
        }
};
var boolClass = '[object Boolean]';
var hasToStringTag = require('has-tostringtag/shams')();

module.exports = function isBoolean(value) {
        if (typeof value === 'boolean') {
                return true;
        }
        if (value === null || typeof value !== 'object') {
                return false;
        }
        return hasToStringTag && Symbol.toStringTag in value ? tryBooleanObject(value) : $toString(value) === boolClass;
};