Add files via upload

background.js

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+/**
+ * Function to hit the back button on the given tab
+ * @param {Tab} tabInfo - The tab to go back on.
+ */
+async function goBack(tabInfo) {
+    let withGoBack = browser.tabs.goBack(tabInfo.id);
+}
+
+/**
+ * Function to handle the context menu click event.
+ * @param {Object} info - Information about the item clicked and the context where the click happened.
+ * @param {Object} tab - The details of the tab where the click took place.
+ */
+async function openPreviousPage(info, tab) {
+    try {
+        let duplicated = browser.tabs.duplicate(tab.id, {index: tab.index});
+        duplicated.then(goBack, console.log)
+    } catch (error) {
+        console.error("Error retrieving previous URL:", error);
+    }
+}
+
+/**
+ * Function to create the context menu item.
+ */
+function createContextMenuItem() {
+    browser.contextMenus.create({
+        id: "open-previous-page",
+        title: "Open Previous Page in New Tab",
+        contexts: ["tab"]
+    });
+}
+
+// Add listener for the context menu click event
+browser.contextMenus.onClicked.addListener(openPreviousPage);
+
+// Create the context menu item when the extension is installed or updated
+browser.runtime.onInstalled.addListener(createContextMenuItem);

manifest.json

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+{
+    "manifest_version": 3,
+    "name": "Open Previous Page in New Tab",
+    "version": "1.0",
+    "description": "Adds a context menu option to open the previous page of a tab in a new tab.",
+    "permissions": [
+      "contextMenus",
+      "history",
+      "tabs"
+    ],
+    "background": {
+      "scripts": ["background.js"]
+    },
+    "icons": {
+      "48": "icon/icon-48-2.png"
+    },
+    "browser_specific_settings": {
+        "gecko": {
+          "id": "{c06ad177-7a43-4a29-875f-beec98bd53be}"
+        }
+    }
+}