import type { ChatCompletionAssistantMessageParam } from "openai/resources/chat/completions.js";
import type { Model, ThinkingContent } from "../../types.js";
/**
 * Reasoning sidecars and replay metadata helpers for OpenAI-compatible
 * providers. Handles extracting reasoning deltas/signatures/metadata from
 * provider payloads, safe reasoning replay fields, Responses-style reasoning
 * sidecar messages, and inline <think> tag splitting.
 */
export declare const SAFE_REASONING_REPLAY_FIELDS: readonly ["reasoning_content", "reasoning", "reasoning_text", "reasoning_summary", "reasoning_summary_text", "summary_text", "summary"];
export type SafeReasoningReplayField = (typeof SAFE_REASONING_REPLAY_FIELDS)[number];
export interface ResponsesReasoningSidecar {
    id?: string;
    item_id?: string;
    output_index?: number;
    summary_index?: number;
    encrypted_content?: string;
}
export type ChatCompletionAssistantMessageWithReasoningSidecars = ChatCompletionAssistantMessageParam & Partial<Record<SafeReasoningReplayField, string>> & {
    reasoning_start?: ResponsesReasoningSidecar;
    reasoning_end?: ResponsesReasoningSidecar;
};
export declare function asRecord(value: unknown): Record<string, unknown> | undefined;
export declare function collectReasoningText(value: unknown): string;
export declare function extractReasoningDelta(deltaFields: Record<string, unknown>): {
    field: string;
    delta: string;
} | undefined;
export declare function extractReasoningSignature(value: unknown): string | undefined;
export declare function extractReasoningMetadata(value: unknown): Record<string, unknown> | undefined;
export declare function stringMetadata(metadata: Record<string, unknown> | undefined, key: string): string | undefined;
export declare function numberMetadata(metadata: Record<string, unknown> | undefined, key: string): number | undefined;
export declare function hasEncryptedReasoningMetadata(block: ThinkingContent): boolean;
export declare function buildResponsesReasoningSidecar(metadata: Record<string, unknown> | undefined, includeOutputIndex: boolean): ResponsesReasoningSidecar;
export declare function isSafeReasoningReplayField(field: string): field is SafeReasoningReplayField;
export declare function normalizeReasoningReplayField(field: string | undefined, model: Model<"openai-completions">): SafeReasoningReplayField;
export declare function setAssistantReasoningField(message: ChatCompletionAssistantMessageParam, field: SafeReasoningReplayField, value: string): void;
export declare function setAssistantReasoningLifecycleSidecars(message: ChatCompletionAssistantMessageParam, blocks: ThinkingContent[]): void;
export declare function assistantHasReasoningReplay(message: ChatCompletionAssistantMessageParam): boolean;
export declare function mergeThinkingMetadata(block: ThinkingContent, metadata?: Record<string, unknown>): void;
export declare function splitInlineThinkingDelta(pending: string, inInlineThinking: boolean, delta: string): {
    parts: Array<{
        type: "text" | "thinking";
        delta: string;
    }>;
    pending: string;
    inInlineThinking: boolean;
};
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