import type { Processor, ProcessAPIErrorArgs, ProcessAPIErrorResult } from './index.js';
/**
 * Handles the Anthropic "assistant message prefill" error reactively.
 *
 * When an LLM API call fails because the conversation ends with an assistant
 * message (which some Anthropic models interpret as pre-filling), this processor
 * appends a `continue` system reminder message and signals a retry.
 *
 * This is a reactive complement to {@link TrailingAssistantGuard}, which
 * proactively prevents the error only for the structured output case.
 * `PrefillErrorHandler` catches the error for all other cases (e.g., tool
 * continuations, multi-turn conversations).
 *
 * @see https://github.com/mastra-ai/mastra/issues/13969
 */
export declare class PrefillErrorHandler implements Processor<'prefill-error-handler'> {
    readonly id: "prefill-error-handler";
    readonly name = "Prefill Error Handler";
    processAPIError({ error, messageList, retryCount, writer, rotateResponseMessageId, }: ProcessAPIErrorArgs): Promise<ProcessAPIErrorResult | void>;
}
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