diff --git a/js/open_new_tab.ts b/js/open_new_tab.ts
new file mode 100644
index 0000000000000000000000000000000000000000..4909a0059f8d8ff64dc92b37d96e2931d725cc99
--- /dev/null
+++ b/js/open_new_tab.ts
@@ -0,0 +1,36 @@
+export async function open_new_tab(
+  url: string,
+  newWindow: boolean,
+  windowId?: number
+): Promise<chrome.tabs.Tab> {
+  let tabId;
+  if (newWindow) {
+    let window = await chrome.windows.create({
+      type: 'normal',
+      state: 'maximized',
+      url: url,
+    } as any as chrome.windows.CreateData);
+    windowId = window.id as number;
+    let tabs = window.tabs || [
+      await chrome.tabs.create({
+        url: url,
+        windowId: windowId,
+      }),
+    ];
+    tabId = tabs[0].id as number;
+  } else {
+    if (!windowId) {
+      const window = await chrome.windows.getCurrent();
+      windowId = window.id;
+    }
+    let tab = await chrome.tabs.create({
+      url: url,
+      windowId: windowId,
+    });
+    tabId = tab.id as number;
+  }
+  let tab = await waitForTabComplete(tabId);
+  await sleep(200);
+  return tab;
+}
+