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# useGuestEmail() function
Signature:
declare function useGuestEmail(): {
guestEmail: import("@vue/composition-api").Ref<string>;
setCustomerEmail: (email: string) => Promise<void>;
updateCustomerEmail: (email: string) => string;
};
Returns:
{ guestEmail: import("@vue/composition-api").Ref<string>; setCustomerEmail: (email: string) => Promise<void>; updateCustomerEmail: (email: string) => string; }