jupyterlab-emrys/lib/main/plugin.js

A computational environment for Jupyter. Powered by Emrys

// Copyright (c) Jupyter Development Team.
// Distributed under the terms of the Modified BSD License.
"use strict";
/**
 * The main extension.
 */
exports.mainExtension = {
    id: 'jupyter.extensions.main',
    activate: function (app) {
        window.onbeforeunload = function (event) {
            var msg = 'Are you sure you want to exit JupyterLab?';
            msg += '\nAny unsaved changes will be lost.';
            return msg;
        };
    }
};