import type { Grade, GraderInput, GraderOptions, Input } from "./types.js";
/**
 * Base class for graders. Authors implement the single-shot `_run`; the base
 * handles k-sample repetition + aggregation, gating policy, and input scoping.
 */
export declare abstract class BaseGrader {
    protected readonly options: GraderOptions;
    constructor(options?: GraderOptions);
    /** Subclasses set a default; `options.name` overrides it. */
    protected abstract readonly defaultName: string;
    name(): string;
    /** One-line human description for the startup echo. Default: the grader name. */
    describe(): string;
    /** Pre-flight check against an input before the run. Default: nothing to check.
     *  Match-based graders override this to fail fast on an unresolved matchOn. */
    validateInput(_input: Input): void;
    /** Single-shot grade. Declarative: no sampling, no aggregation. */
    protected abstract _run(input: GraderInput): Promise<Grade>;
    mustPass(): boolean;
    weight(): number;
    /** Whether this grader runs on `input`. Default (no inputScope) → every input. */
    gradesInput(input: Input): boolean;
    /** Orchestration: run `_run` k times, aggregate by score kind. */
    run(input: GraderInput): Promise<Grade>;
    passes(grade: Grade): boolean;
}