diff --git a/chrome/content/zotero/xpcom/prompt.js b/chrome/content/zotero/xpcom/prompt.js
new file mode 100644
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+++ b/chrome/content/zotero/xpcom/prompt.js
@@ -0,0 +1,87 @@
+/*
+	***** BEGIN LICENSE BLOCK *****
+	
+	Copyright © 2022 Corporation for Digital Scholarship
+                     Vienna, Virginia, USA
+					http://zotero.org
+	
+	This file is part of Zotero.
+	
+	Zotero is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Affero General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+	
+	Zotero is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Affero General Public License for more details.
+
+	You should have received a copy of the GNU Affero General Public License
+	along with Zotero.  If not, see <http://www.gnu.org/licenses/>.
+	
+	***** END LICENSE BLOCK *****
+*/
+
+var { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
+
+Zotero.Prompt = {
+	BUTTON_TITLE_OK: Services.prompt.BUTTON_TITLE_OK,
+	BUTTON_TITLE_CANCEL: Services.prompt.BUTTON_TITLE_CANCEL,
+	BUTTON_TITLE_YES: Services.prompt.BUTTON_TITLE_YES,
+	BUTTON_TITLE_NO: Services.prompt.BUTTON_TITLE_NO,
+	BUTTON_TITLE_SAVE: Services.prompt.BUTTON_TITLE_SAVE,
+	BUTTON_TITLE_DONT_SAVE: Services.prompt.BUTTON_TITLE_DONT_SAVE,
+	BUTTON_TITLE_REVERT: Services.prompt.BUTTON_TITLE_REVERT,
+	
+	/**
+	 * A wrapper around XPCOM's Services.prompt.confirmEx()
+	 * but with a friendlier interface.
+	 *
+	 * Button text can use special static variables from
+	 * Zotero.Prompt
+	 *
+	 * @param options
+	 * - {mozIDOMWindowProxy} window - The parent window or null.
+	 * - {String} title - Text to appear in the title of the dialog.
+	 * - {String} text - Text to appear in the body of the dialog.
+	 * - {String|Number} button0 - Button 0 text
+	 * - {String|Number} button1 - Button 1 text
+	 * - {String|Number} button2 - Button 2 text
+	 * - {String} checkLabel - Text to appear with the checkbox.
+	 * - {Object} checkbox - Contains the initial checked state of the
+	 *        checkbox when this method is called and the final checked
+	 *        state after this method returns. Either {} or  { value: true/false }.
+	 * - {Number} defaultButton - The index of default button. 0 by default
+	 * - {Boolean} delayButtons - Make the buttons initially disabled and enable them after some period
+	 *        so that the user doesn't click through the dialog without reading it.
+	 * @returns {Number} The index of the button pressed.
+	 */
+	confirm(options = {}) {
+		let { window: win, title, text, button0, button1, button2, checkLabel, checkbox, defaultButton, delayButtons } = options;
+		if (!win) win = null;
+		if (!title) throw new Error('`title` is required');
+		if (!text) throw new Error('`text` is required');
+		if (!button0 && !button1 && !button2) {
+			throw new Error('At least one button is required');
+		}
+		if (checkLabel && (!checkbox || typeof checkbox != 'object')) {
+			throw new Error('`checkLabel` provided without `checkbox` option');
+		}
+		let flags = delayButtons ? Services.prompt.BUTTON_DELAY_ENABLE : 0;
+		if (typeof button0 == 'number') flags += Services.prompt.BUTTON_POS_0 * button0;
+		else if (typeof button0 == 'string') flags += Services.prompt.BUTTON_POS_0 * Services.prompt.BUTTON_TITLE_IS_STRING;
+		if (typeof button1 == 'number') flags += Services.prompt.BUTTON_POS_1 * button1;
+		else if (typeof button1 == 'string') flags += Services.prompt.BUTTON_POS_1 * Services.prompt.BUTTON_TITLE_IS_STRING;
+		if (typeof button2 == 'number') flags += Services.prompt.BUTTON_POS_2 * button2;
+		else if (typeof button2 == 'string') flags += Services.prompt.BUTTON_POS_2 * Services.prompt.BUTTON_TITLE_IS_STRING;
+		if (defaultButton) flags += defaultButton == 1 ? Services.prompt.BUTTON_POS_1_DEFAULT : Services.prompt.BUTTON_POS_2_DEFAULT;
+		return Services.prompt.confirmEx(
+			win, title, text, flags,
+			typeof button0 == 'number' ? null : button0,
+			typeof button1 == 'number' ? null : button1,
+			typeof button2 == 'number' ? null : button2,
+			checkLabel, checkbox
+		);
+	}
+};
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