import { z } from 'zod';
/**
 * Zod schema for a complete Perplexity API response.
 * Validates the core fields that lumic-utils depends on.
 * Uses .passthrough() to allow additional fields from newer API versions.
 */
export declare const perplexityResponseSchema: z.ZodObject<{
    id: z.ZodString;
    model: z.ZodString;
    object: z.ZodString;
    created: z.ZodNumber;
    choices: z.ZodArray<z.ZodObject<{
        index: z.ZodNumber;
        finish_reason: z.ZodNullable<z.ZodEnum<["stop", "length", "model_length"]>>;
        message: z.ZodObject<{
            role: z.ZodEnum<["assistant"]>;
            content: z.ZodString;
        }, "strip", z.ZodTypeAny, {
            content: string;
            role: "assistant";
        }, {
            content: string;
            role: "assistant";
        }>;
        delta: z.ZodOptional<z.ZodObject<{
            role: z.ZodOptional<z.ZodString>;
            content: z.ZodOptional<z.ZodString>;
        }, "strip", z.ZodTypeAny, {
            content?: string | undefined;
            role?: string | undefined;
        }, {
            content?: string | undefined;
            role?: string | undefined;
        }>>;
    }, "strip", z.ZodTypeAny, {
        message: {
            content: string;
            role: "assistant";
        };
        index: number;
        finish_reason: "length" | "stop" | "model_length" | null;
        delta?: {
            content?: string | undefined;
            role?: string | undefined;
        } | undefined;
    }, {
        message: {
            content: string;
            role: "assistant";
        };
        index: number;
        finish_reason: "length" | "stop" | "model_length" | null;
        delta?: {
            content?: string | undefined;
            role?: string | undefined;
        } | undefined;
    }>, "many">;
    usage: z.ZodOptional<z.ZodObject<{
        prompt_tokens: z.ZodNumber;
        completion_tokens: z.ZodNumber;
        total_tokens: z.ZodNumber;
    }, "passthrough", z.ZodTypeAny, z.objectOutputType<{
        prompt_tokens: z.ZodNumber;
        completion_tokens: z.ZodNumber;
        total_tokens: z.ZodNumber;
    }, z.ZodTypeAny, "passthrough">, z.objectInputType<{
        prompt_tokens: z.ZodNumber;
        completion_tokens: z.ZodNumber;
        total_tokens: z.ZodNumber;
    }, z.ZodTypeAny, "passthrough">>>;
    citations: z.ZodOptional<z.ZodArray<z.ZodString, "many">>;
}, "passthrough", z.ZodTypeAny, z.objectOutputType<{
    id: z.ZodString;
    model: z.ZodString;
    object: z.ZodString;
    created: z.ZodNumber;
    choices: z.ZodArray<z.ZodObject<{
        index: z.ZodNumber;
        finish_reason: z.ZodNullable<z.ZodEnum<["stop", "length", "model_length"]>>;
        message: z.ZodObject<{
            role: z.ZodEnum<["assistant"]>;
            content: z.ZodString;
        }, "strip", z.ZodTypeAny, {
            content: string;
            role: "assistant";
        }, {
            content: string;
            role: "assistant";
        }>;
        delta: z.ZodOptional<z.ZodObject<{
            role: z.ZodOptional<z.ZodString>;
            content: z.ZodOptional<z.ZodString>;
        }, "strip", z.ZodTypeAny, {
            content?: string | undefined;
            role?: string | undefined;
        }, {
            content?: string | undefined;
            role?: string | undefined;
        }>>;
    }, "strip", z.ZodTypeAny, {
        message: {
            content: string;
            role: "assistant";
        };
        index: number;
        finish_reason: "length" | "stop" | "model_length" | null;
        delta?: {
            content?: string | undefined;
            role?: string | undefined;
        } | undefined;
    }, {
        message: {
            content: string;
            role: "assistant";
        };
        index: number;
        finish_reason: "length" | "stop" | "model_length" | null;
        delta?: {
            content?: string | undefined;
            role?: string | undefined;
        } | undefined;
    }>, "many">;
    usage: z.ZodOptional<z.ZodObject<{
        prompt_tokens: z.ZodNumber;
        completion_tokens: z.ZodNumber;
        total_tokens: z.ZodNumber;
    }, "passthrough", z.ZodTypeAny, z.objectOutputType<{
        prompt_tokens: z.ZodNumber;
        completion_tokens: z.ZodNumber;
        total_tokens: z.ZodNumber;
    }, z.ZodTypeAny, "passthrough">, z.objectInputType<{
        prompt_tokens: z.ZodNumber;
        completion_tokens: z.ZodNumber;
        total_tokens: z.ZodNumber;
    }, z.ZodTypeAny, "passthrough">>>;
    citations: z.ZodOptional<z.ZodArray<z.ZodString, "many">>;
}, z.ZodTypeAny, "passthrough">, z.objectInputType<{
    id: z.ZodString;
    model: z.ZodString;
    object: z.ZodString;
    created: z.ZodNumber;
    choices: z.ZodArray<z.ZodObject<{
        index: z.ZodNumber;
        finish_reason: z.ZodNullable<z.ZodEnum<["stop", "length", "model_length"]>>;
        message: z.ZodObject<{
            role: z.ZodEnum<["assistant"]>;
            content: z.ZodString;
        }, "strip", z.ZodTypeAny, {
            content: string;
            role: "assistant";
        }, {
            content: string;
            role: "assistant";
        }>;
        delta: z.ZodOptional<z.ZodObject<{
            role: z.ZodOptional<z.ZodString>;
            content: z.ZodOptional<z.ZodString>;
        }, "strip", z.ZodTypeAny, {
            content?: string | undefined;
            role?: string | undefined;
        }, {
            content?: string | undefined;
            role?: string | undefined;
        }>>;
    }, "strip", z.ZodTypeAny, {
        message: {
            content: string;
            role: "assistant";
        };
        index: number;
        finish_reason: "length" | "stop" | "model_length" | null;
        delta?: {
            content?: string | undefined;
            role?: string | undefined;
        } | undefined;
    }, {
        message: {
            content: string;
            role: "assistant";
        };
        index: number;
        finish_reason: "length" | "stop" | "model_length" | null;
        delta?: {
            content?: string | undefined;
            role?: string | undefined;
        } | undefined;
    }>, "many">;
    usage: z.ZodOptional<z.ZodObject<{
        prompt_tokens: z.ZodNumber;
        completion_tokens: z.ZodNumber;
        total_tokens: z.ZodNumber;
    }, "passthrough", z.ZodTypeAny, z.objectOutputType<{
        prompt_tokens: z.ZodNumber;
        completion_tokens: z.ZodNumber;
        total_tokens: z.ZodNumber;
    }, z.ZodTypeAny, "passthrough">, z.objectInputType<{
        prompt_tokens: z.ZodNumber;
        completion_tokens: z.ZodNumber;
        total_tokens: z.ZodNumber;
    }, z.ZodTypeAny, "passthrough">>>;
    citations: z.ZodOptional<z.ZodArray<z.ZodString, "many">>;
}, z.ZodTypeAny, "passthrough">>;
/** Type inferred from the Perplexity response schema */
export type PerplexityResponse = z.infer<typeof perplexityResponseSchema>;
/** Strict validator for Perplexity API responses. Throws on failure. */
export declare const validatePerplexityResponse: (data: unknown) => z.objectInputType<{
    id: z.ZodString;
    model: z.ZodString;
    object: z.ZodString;
    created: z.ZodNumber;
    choices: z.ZodArray<z.ZodObject<{
        index: z.ZodNumber;
        finish_reason: z.ZodNullable<z.ZodEnum<["stop", "length", "model_length"]>>;
        message: z.ZodObject<{
            role: z.ZodEnum<["assistant"]>;
            content: z.ZodString;
        }, "strip", z.ZodTypeAny, {
            content: string;
            role: "assistant";
        }, {
            content: string;
            role: "assistant";
        }>;
        delta: z.ZodOptional<z.ZodObject<{
            role: z.ZodOptional<z.ZodString>;
            content: z.ZodOptional<z.ZodString>;
        }, "strip", z.ZodTypeAny, {
            content?: string | undefined;
            role?: string | undefined;
        }, {
            content?: string | undefined;
            role?: string | undefined;
        }>>;
    }, "strip", z.ZodTypeAny, {
        message: {
            content: string;
            role: "assistant";
        };
        index: number;
        finish_reason: "length" | "stop" | "model_length" | null;
        delta?: {
            content?: string | undefined;
            role?: string | undefined;
        } | undefined;
    }, {
        message: {
            content: string;
            role: "assistant";
        };
        index: number;
        finish_reason: "length" | "stop" | "model_length" | null;
        delta?: {
            content?: string | undefined;
            role?: string | undefined;
        } | undefined;
    }>, "many">;
    usage: z.ZodOptional<z.ZodObject<{
        prompt_tokens: z.ZodNumber;
        completion_tokens: z.ZodNumber;
        total_tokens: z.ZodNumber;
    }, "passthrough", z.ZodTypeAny, z.objectOutputType<{
        prompt_tokens: z.ZodNumber;
        completion_tokens: z.ZodNumber;
        total_tokens: z.ZodNumber;
    }, z.ZodTypeAny, "passthrough">, z.objectInputType<{
        prompt_tokens: z.ZodNumber;
        completion_tokens: z.ZodNumber;
        total_tokens: z.ZodNumber;
    }, z.ZodTypeAny, "passthrough">>>;
    citations: z.ZodOptional<z.ZodArray<z.ZodString, "many">>;
}, z.ZodTypeAny, "passthrough">;
/** Safe validator for Perplexity API responses. Never throws. */
export declare const safeValidatePerplexityResponse: (data: unknown) => import("./validation-helpers").ValidationResult<z.objectInputType<{
    id: z.ZodString;
    model: z.ZodString;
    object: z.ZodString;
    created: z.ZodNumber;
    choices: z.ZodArray<z.ZodObject<{
        index: z.ZodNumber;
        finish_reason: z.ZodNullable<z.ZodEnum<["stop", "length", "model_length"]>>;
        message: z.ZodObject<{
            role: z.ZodEnum<["assistant"]>;
            content: z.ZodString;
        }, "strip", z.ZodTypeAny, {
            content: string;
            role: "assistant";
        }, {
            content: string;
            role: "assistant";
        }>;
        delta: z.ZodOptional<z.ZodObject<{
            role: z.ZodOptional<z.ZodString>;
            content: z.ZodOptional<z.ZodString>;
        }, "strip", z.ZodTypeAny, {
            content?: string | undefined;
            role?: string | undefined;
        }, {
            content?: string | undefined;
            role?: string | undefined;
        }>>;
    }, "strip", z.ZodTypeAny, {
        message: {
            content: string;
            role: "assistant";
        };
        index: number;
        finish_reason: "length" | "stop" | "model_length" | null;
        delta?: {
            content?: string | undefined;
            role?: string | undefined;
        } | undefined;
    }, {
        message: {
            content: string;
            role: "assistant";
        };
        index: number;
        finish_reason: "length" | "stop" | "model_length" | null;
        delta?: {
            content?: string | undefined;
            role?: string | undefined;
        } | undefined;
    }>, "many">;
    usage: z.ZodOptional<z.ZodObject<{
        prompt_tokens: z.ZodNumber;
        completion_tokens: z.ZodNumber;
        total_tokens: z.ZodNumber;
    }, "passthrough", z.ZodTypeAny, z.objectOutputType<{
        prompt_tokens: z.ZodNumber;
        completion_tokens: z.ZodNumber;
        total_tokens: z.ZodNumber;
    }, z.ZodTypeAny, "passthrough">, z.objectInputType<{
        prompt_tokens: z.ZodNumber;
        completion_tokens: z.ZodNumber;
        total_tokens: z.ZodNumber;
    }, z.ZodTypeAny, "passthrough">>>;
    citations: z.ZodOptional<z.ZodArray<z.ZodString, "many">>;
}, z.ZodTypeAny, "passthrough">>;