import type * as Vital from "../../api/index.js";
import * as core from "../../core/index.js";
import type * as serializers from "../index.js";
export declare const ClientFacingSleepCycleSourceType: core.serialization.Schema<serializers.ClientFacingSleepCycleSourceType.Raw, Vital.ClientFacingSleepCycleSourceType>;
export declare namespace ClientFacingSleepCycleSourceType {
    type Raw = "unknown" | "phone" | "watch" | "app" | "multiple_sources" | "fingerprick" | "cuff" | "manual_scan" | "automatic" | "scale" | "chest_strap" | "ring" | "lab" | "exercise_machine" | "earphone";
}