- new

background.js

@@ -0,0 +1,25 @@
+
+browser.commands.onCommand.addListener(command => closeTabs(command));
+
+// ----------------------------------------------------
+
+async function closeTabs(commandId) {
+  var tabs = await browser.tabs.query({});
+  var activeTab = await getActiveTab();
+
+  var removeIds = [];
+
+  switch(commandId) {
+    case 'close-other-tabs':
+      removeIds = tabs.filter(tab => !tab.active).map(tab => tab.id);
+      break;
+    case 'close-left-tabs':
+      removeIds = tabs.filter(tab => tab.index < activeTab.index).map(tab => tab.id);
+      break;
+    case 'close-right-tabs':
+      removeIds = tabs.filter(tab => tab.index > activeTab.index).map(tab => tab.id);
+      break;
+  }
+
+  browser.tabs.remove(removeIds);
+}

manifest.json

@@ -0,0 +1,29 @@
+{
+  "name": "Close Tabs Shortcuts",
+  "version": "1.1.5",
+  "description": "Adds keyboard shortcuts for closing all not active tabs, all to the left of the active one, all to the right",
+
+  "manifest_version": 2,
+  "background": {
+    "scripts": ["utils.js", "background.js"]
+  },
+
+  "commands": {
+    "close-other-tabs": {
+      "suggested_key": { "default": "Alt+W" },
+      "description": "Close Other Tabs"
+    },
+    "close-left-tabs": {
+      "suggested_key": { "default": "Alt+Shift+F1" },
+      "description": "Close Left Tabs"
+    },
+    "close-right-tabs": {
+      "suggested_key": { "default": "Alt+Shift+F2" },
+      "description": "Close Right Tabs"
+    }
+  },
+
+  "permissions": [
+    "tabs"
+  ]
+}

utils.js

@@ -0,0 +1,6 @@
+
+function getActiveTab() {
+  return browser.tabs.query({}).then(tabs => {
+    return tabs.find(tab => tab.active);
+  });
+}