import { Effect, Option } from "effect";
import { Prompt, Response, Tool } from "effect/unstable/ai";
import type { Middleware, TurnContext } from "../model/model-middleware.js";
interface RedactOptions {
    readonly pattern: RegExp;
    readonly replacement?: string;
}
/** @experimental Fail the run when `check` rejects the input prompt. */
export declare const validateInput: (check: (prompt: Prompt.Prompt, context: TurnContext) => Effect.Effect<Option.Option<string>>) => Middleware;
/** @experimental Redact matches in text-bearing prompt fields before the model sees them. */
export declare const redactInput: (options: RedactOptions) => Middleware;
/** @experimental Redact matches in streamed text deltas before Baton folds or emits them. */
export declare const redactOutput: (options: RedactOptions) => Middleware;
/** @experimental Drop streamed non-tool-call parts when `keep` returns false. */
export declare const filterOutput: (keep: (part: Response.StreamPart<Record<string, Tool.Any>>, context: TurnContext) => boolean) => Middleware;
export {};