jherax

/**
 * Lightweight script to detect whether the browser is running in Private mode.
 * @returns {Promise<boolean>}
 *
 * Live demo:
 * @see https://output.jsbin.com/tazuwif
 *
 * This snippet uses Promises. If you want to run it in old browsers, polyfill it:
 * @see https://cdn.jsdelivr.net/npm/es6-promise@4/dist/es6-promise.auto.min.js
 *