export type RunnerOptions = {
    testConcurrency?: number;
    fetchConcurrency?: number;
    /** @internal */
    legacyConcurrency?: number;
    removeDuplicateTests?: boolean;
    maskLog?: boolean;
};
/** @deprecated */
export declare class RunnerOptionsFluent {
    private _options;
    testConcurrency(concurrency: number): this;
    /** @internal */
    toObject(): RunnerOptions;
    /** @internal */
    toJSON(): RunnerOptions;
    /** @internal */
    toString(): string;
}
/** @deprecated */
export declare function RunnerOptionsFluentInit(): RunnerOptionsFluent;