in lib/messageUtils.ts [323:343]
export function maybeCreateWelcomePreview(message: any): object {
if (message.template === "defaultaboutwelcome") {
//Shove the about:welcome message in a spotlight
let defaultWelcomeFake = {
id: message.id,
template: "spotlight",
targeting: true,
content: message,
};
// Add the modal property to the spotlight to mimic about:welcome
defaultWelcomeFake.content.modal = "tab";
// The recipe might have a backdrop, but if not, fall back to the default
defaultWelcomeFake.content.backdrop =
message.backdrop ||
"var(--mr-welcome-background-color) var(--mr-welcome-background-gradient)";
return defaultWelcomeFake;
}
// if the message isn't about:welcome, just send it back
return message;
}