SxsnPC/node_modules/es-array-method-boxes-properly/index.js

module.exports = function properlyBoxed(method) {
	// Check node 0.6.21 bug where third parameter is not boxed
	var properlyBoxesNonStrict = true;
	var properlyBoxesStrict = true;
	var threwException = false;
	if (typeof method === 'function') {
		try {
			// eslint-disable-next-line max-params
			method.call('f', function (_, __, O) {
				if (typeof O !== 'object') {
					properlyBoxesNonStrict = false;
				}
			});

			method.call(
				[null],
				function () {
					'use strict';

					properlyBoxesStrict = typeof this === 'string'; // eslint-disable-line no-invalid-this
				},
				'x'
			);
		} catch (e) {
			threwException = true;
		}
		return !threwException && properlyBoxesNonStrict && properlyBoxesStrict;
	}
	return false;
};