/**
 * completed grader — checks that the agent session completed successfully.
 *
 * "completed" mode (strict): non-empty output, no errors, at least one turn_end.
 * "exit-success" mode (legacy compat): non-empty output only.
 *
 * The "exit-success" alias matches vally's exit_success semantics,
 * which only checks that the agent produced output.
 */
import type { Grader, GraderInput, GraderMetadata, GraderResult } from "../../index.js";
export declare class CompletedGrader implements Grader {
    metadata: GraderMetadata;
    private readonly strict;
    constructor(name?: "completed" | "exit-success");
    grade(input: GraderInput): Promise<GraderResult>;
}
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