sidebarAction.toggle()

Toggles the visibility of the sidebar in the active window, if the sidebar belongs to the extension.

You can only call this function from inside the handler for a user action.

This is an asynchronous function that returns a Promise.

browser.sidebarAction.toggle()

None.

A Promise that is resolved with no arguments.

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Toggles the sidebar when the user selects an item from the context menu:

browser.menus.create({
  id: "toggle-sidebar",
  title: "Toggle sidebar",
  contexts: ["all"]
});

browser.menus.onClicked.addListener(() => {
  browser.sidebarAction.toggle();
});