| 'use strict'; | |
| 
 | |
| var $isNaN = require('./isNaN'); | |
| 
 | |
| /** @type {import('./sign')} */ | |
| module.exports = function sign(number) { | |
| 	if ($isNaN(number) || number === 0) { | |
| 		return number; | |
| 	} | |
| 	return number < 0 ? -1 : +1; | |
| };
 |