import type { CapturedHttpErrorResponse } from "../utils/http-inspector.js";
/**
 * Fallback marker: the server rejected the `chat_template_kwargs.reasoning_effort`
 * spelling itself (strict kwargs whitelists — Ninfer-style servers), not the
 * effort value. Apply strips the kwarg and hoists the value onto the top-level
 * `reasoning_effort` field when that spelling is absent.
 * @internal
 */
export declare const STRIP_TEMPLATE_KWARG_REASONING_EFFORT: unique symbol;
/** @internal */
export type OpenAIReasoningEffortFallback = string | null | typeof STRIP_TEMPLATE_KWARG_REASONING_EFFORT;
/** @internal */
export interface OpenAIReasoningEffortFallbackState {
    reasoningEffortFallbacks: Map<string, OpenAIReasoningEffortFallback>;
}
/** @internal */
export declare function createOpenAIReasoningEffortFallbackState(): OpenAIReasoningEffortFallbackState;
/** @internal */
export declare function clearOpenAIReasoningEffortFallbackState(state: OpenAIReasoningEffortFallbackState): void;
/** @internal */
export declare function getOpenAIReasoningEffortFallback(state: OpenAIReasoningEffortFallbackState | undefined, key: string): OpenAIReasoningEffortFallback | undefined;
/** @internal */
export declare function rememberOpenAIReasoningEffortFallback(state: OpenAIReasoningEffortFallbackState | undefined, key: string, fallback: OpenAIReasoningEffortFallback): void;
/** @internal */
export declare function createOpenAIReasoningEffortFallbackKey(endpoint: "chat-completions" | "responses" | "azure-responses", baseUrl: string | undefined, wireModelId: string | undefined): string;
/** @internal */
export declare function readOpenAIReasoningEffort(params: unknown): string | undefined;
/** @internal */
export declare function applyOpenAIReasoningEffortFallback(params: unknown, fallback: OpenAIReasoningEffortFallback): boolean;
/** @internal */
export declare function resolveOpenAIReasoningEffortFallback(error: unknown, captured: CapturedHttpErrorResponse | undefined, params: unknown, options?: {
    explicitDisable?: boolean;
}): OpenAIReasoningEffortFallback | undefined;