import { SseStreamMsg } from "./sse-stream.js";
import { StatsCollectMsg } from "./stats-stream.js";
export declare const DeltaBeginMsg: import("arktype/internal/variants/object.ts").ObjectType<{
    type: "delta.begin";
    streamId: string;
    id: string;
    model: string;
    timestamp: Date | ((In: string) => import("arktype/internal/attributes.ts").To<Date>);
}, {}>;
export declare const DeltaLineMsg: import("arktype/internal/variants/object.ts").ObjectType<{
    type: "delta.line";
    streamId: string;
    index: number;
    content: string;
    deltaSeq: number;
    choiceSeq: number;
    timestamp: Date | ((In: string) => import("arktype/internal/attributes.ts").To<Date>);
}, {}>;
export declare const DeltaUsageMsg: import("arktype/internal/variants/object.ts").ObjectType<{
    type: "delta.usage";
    streamId: string;
    usage: {
        prompt_tokens: number;
        completion_tokens: number;
        total_tokens: number;
    };
    deltaSeq: number;
    timestamp: Date | ((In: string) => import("arktype/internal/attributes.ts").To<Date>);
}, {}>;
export declare const DeltaImageMsg: import("arktype/internal/variants/object.ts").ObjectType<{
    type: "delta.image";
    streamId: string;
    imageId: string;
    imageSeq: number;
    image: {
        type: string;
        index?: number | undefined;
        image_url: {
            url: string;
        };
    };
    choiceSeq: number;
    deltaSeq: number;
    index: number;
    timestamp: Date | ((In: string) => import("arktype/internal/attributes.ts").To<Date>);
}, {}>;
export declare const DeltaEndMsg: import("arktype/internal/variants/object.ts").ObjectType<{
    type: "delta.end";
    streamId: string;
    finishReasons: string[];
    usages: {
        prompt_tokens: number;
        completion_tokens: number;
        total_tokens: number;
    }[];
    totalDeltas: number;
    totalChars: number;
    timestamp: Date | ((In: string) => import("arktype/internal/attributes.ts").To<Date>);
}, {}>;
export declare const DeltaStatsMsg: import("arktype/internal/variants/object.ts").ObjectType<{
    type: "delta.stats";
    streamId: string;
    stats: {
        deltaSeq: number;
        deltaUsages: number;
        totalChars: number;
    };
    timestamp: Date | ((In: string) => import("arktype/internal/attributes.ts").To<Date>);
}, {}>;
export declare const DeltaStreamMsg: import("arktype/internal/variants/object.ts").ObjectType<{
    type: "delta.begin";
    streamId: string;
    id: string;
    model: string;
    timestamp: Date | ((In: string) => import("arktype/internal/attributes.ts").To<Date>);
} | {
    type: "delta.line";
    streamId: string;
    index: number;
    content: string;
    deltaSeq: number;
    choiceSeq: number;
    timestamp: Date | ((In: string) => import("arktype/internal/attributes.ts").To<Date>);
} | {
    type: "delta.usage";
    streamId: string;
    usage: {
        prompt_tokens: number;
        completion_tokens: number;
        total_tokens: number;
    };
    deltaSeq: number;
    timestamp: Date | ((In: string) => import("arktype/internal/attributes.ts").To<Date>);
} | {
    type: "delta.image";
    streamId: string;
    imageId: string;
    imageSeq: number;
    image: {
        type: string;
        index?: number | undefined;
        image_url: {
            url: string;
        };
    };
    choiceSeq: number;
    deltaSeq: number;
    index: number;
    timestamp: Date | ((In: string) => import("arktype/internal/attributes.ts").To<Date>);
} | {
    type: "delta.end";
    streamId: string;
    finishReasons: string[];
    usages: {
        prompt_tokens: number;
        completion_tokens: number;
        total_tokens: number;
    }[];
    totalDeltas: number;
    totalChars: number;
    timestamp: Date | ((In: string) => import("arktype/internal/attributes.ts").To<Date>);
} | {
    type: "delta.stats";
    streamId: string;
    stats: {
        deltaSeq: number;
        deltaUsages: number;
        totalChars: number;
    };
    timestamp: Date | ((In: string) => import("arktype/internal/attributes.ts").To<Date>);
}, {}>;
export type DeltaBeginMsg = typeof DeltaBeginMsg.infer;
export type DeltaLineMsg = typeof DeltaLineMsg.infer;
export type DeltaEndMsg = typeof DeltaEndMsg.infer;
export type DeltaStatsMsg = typeof DeltaStatsMsg.infer;
export type DeltaUsageMsg = typeof DeltaUsageMsg.infer;
export type DeltaImageMsg = typeof DeltaImageMsg.infer;
export type DeltaStreamMsg = typeof DeltaStreamMsg.infer;
export declare const isDeltaBegin: (msg: unknown, streamId?: string) => msg is DeltaBeginMsg;
export declare const isDeltaLine: (msg: unknown, streamId?: string) => msg is DeltaLineMsg;
export declare const isDeltaEnd: (msg: unknown, streamId?: string) => msg is DeltaEndMsg;
export declare const isDeltaStats: (msg: unknown, streamId?: string) => msg is DeltaStatsMsg;
export declare const isDeltaMsg: (msg: unknown, streamId?: string) => msg is DeltaStreamMsg;
export declare const isDeltaUsage: (msg: unknown, streamId?: string) => msg is DeltaUsageMsg;
export declare const isDeltaImage: (msg: unknown, streamId?: string) => msg is DeltaImageMsg;
export declare function createDeltaStream(filterStreamId: string, createId: () => string): TransformStream<SseStreamMsg | DeltaStreamMsg | StatsCollectMsg, DeltaStreamMsg>;