/* Session Backup Script for the Browser Console NOTE: BEFORE RUNNING THIS SCRIPT, CHECK THIS SETTING: Type or paste about:config into the address bar and press Enter Click the button promising to be careful In the search box type devt and pause while Firefox filters the list If devtools.chrome.enabled is false, double-click it to toggle to true Paste this entire script into the command line at the bottom of the Browser Console (Windows: Ctrl+Shift+j) Then press Enter to run the script. A save dialog should promptly open. */ ssj = SessionStore.getBrowserState(); // get Current Session State if(ssj){ // Set up Save As dialog var fp = Components.classes["@mozilla.org/filepicker;1"].createInstance(Components.interfaces.nsIFilePicker); try { // Fx125+ fp.init(window.browsingContext, 'Open File', Components.interfaces.nsIFilePicker.modeSave); } catch(e) { // Fx124 and earlier fp.init(window, 'Open File', Components.interfaces.nsIFilePicker.modeSave); } fp.appendFilter("JSON Files", "*.json"); fp.defaultString = "sessionstore-snapshot.json"; // Call Save As dialog fp.open((aResult) => { if (aResult == Components.interfaces.nsIFilePicker.returnOK || aResult == Components.interfaces.nsIFilePicker.returnReplace) { try { IOUtils.writeUTF8(fp.file.path, ssj); alert('Look for ' + fp.file.path); } catch (err) { alert(err); } } else { alert('Okay, not saving'); } }); }