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jherax / is-private-mode.js
Last active March 19, 2024 18:29
Detect if the browser is running in Private mode - Promise based (last update: Feb 2020)
/**
* 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
*