browser.commands.onCommand.addListener(listener)
browser.commands.onCommand.removeListener(listener)
browser.commands.onCommand.hasListener(listener)

Events have three functions:

addListener(callback)

Adds a listener to this event.

removeListener(listener)

Stop listening to this event. The listener argument is the listener to remove.

hasListener(listener)

Check whether listener is registered for this event. Returns true if it is listening, false otherwise.

callback

Function that will be called when a user enters the command's shortcut. The function will be passed the following arguments:

name

string. Name of the command. This matches the name given to the command in its manifest.json entry.

Given a manifest.json entry like this:

"commands": {
  "toggle-feature": {
    "suggested_key": {
      "default": "Ctrl+Shift+Y"
    },
    "description": "Send a 'toggle-feature' event"
  }
}

You could listen for this particular command like this:

browser.commands.onCommand.addListener((command) => {
  if (command === "toggle-feature") {
    console.log("toggling the feature!");
  }
});

• commands