export interface Options {
    separator: string;
}
export declare const useTitle: (opts?: Partial<Options>) => {
    head: import("vue").ComputedRef<string>;
    parts: import("vue").ComputedRef<string[]>;
    replace: (replacement: string | Promise<string>) => Promise<void>;
    replacePart: (index: number, replacement: string | Promise<string>) => Promise<void>;
    replaceParts: (newParts: (string | Promise<string>)[]) => Promise<void>;
    resolving: import("vue").Ref<boolean, boolean>;
    tail: import("vue").ComputedRef<string[]>;
    title: import("vue").Ref<string | null | undefined, string | null | undefined>;
};