import type { GraderFn } from "../types.js";
/** Options for the `contains` and `notContains` graders. */
export interface ContainsOptions {
    /** Perform a case-sensitive match. @default false */
    readonly caseSensitive?: boolean | undefined;
}
/** Checks that output.text contains the given substring. */
export declare function contains(substring: string, options?: ContainsOptions): GraderFn;
/** Checks that output.text does NOT contain the given substring. */
export declare function notContains(substring: string, options?: ContainsOptions): GraderFn;
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