Google Minus One

• Project: Goole Minus One Firefox Extension
• File Purpose: This file is the main javascript file for the extension. It finds the
• upgrade advertisement on google pages and remove the html element.
• Responsible Party: Claire Rosenthal
• License: GNU GPLv3
• This program is free software: you can redistribute it and/or modify
• it under the terms of the GNU General Public License as published by
• the Free Software Foundation, either version 3 of the License, or
• (at your option) any later version.
• This program 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 General Public License for more details.
• You should have received a copy of the GNU General Public License
• along with this program. If not, see <https://www.gnu.org/licenses/>. */

// This is a Stack Overflow solution to waiting for and finding an html element using the MutationObserver function. // Source - https://stackoverflow.com/a/61511955 // Posted by Yong Wang, modified by community. See post 'Timeline' for change history // Retrieved 2026-07-01, License - CC BY-SA 4.0

function waitForElm(selector) { return new Promise((resolve) => { if (document.querySelector(selector)) { return resolve(document.querySelector(selector)); }

const observer = new MutationObserver((mutations) => {
  if (document.querySelector(selector)) {
    observer.disconnect();
    resolve(document.querySelector(selector));
  }
});

// If you get "parameter 1 is not of type 'Node'" error, see https://stackoverflow.com/a/77855838/492336
observer.observe(document.body, {
  childList: true,
  subtree: true,
});

}); }