export declare const mergeConfig: <T extends import("type-fest").Simplify<import("type-fest/source/merge").Merge_<import("@acot/types").Config, {
    runner?: import("type-fest").Simplify<import("type-fest/source/merge").Merge_<import("type-fest").Simplify<import("type-fest/source/merge").Merge_<{
        with?: import("@acot/types").RunnerOptions | undefined;
    }, {
        uses: string;
    }>>, {
        uses: import("@acot/types").RunnerFactory<{}>;
    }>> | undefined;
    reporters?: import("type-fest").Simplify<import("type-fest/source/merge").Merge_<import("type-fest").Simplify<import("type-fest/source/merge").Merge_<{
        with?: import("@acot/types").ReporterOptions | undefined;
    }, {
        uses: string;
    }>>, {
        uses: import("@acot/types").ReporterFactory<{}>;
    }>>[] | undefined;
    rules: import("@acot/types").NormalizedRuleConfig;
    presets?: import("@acot/types").Preset[] | undefined;
    overrides?: import("type-fest").Simplify<import("type-fest/source/merge").Merge_<import("@acot/types").ConfigEntry, {
        rules: import("@acot/types").NormalizedRuleConfig;
        presets?: import("@acot/types").Preset[] | undefined;
    }>>[] | undefined;
    viewport?: import("puppeteer-core").Viewport | undefined;
}>> | import("type-fest").Simplify<import("type-fest/source/merge").Merge_<import("@acot/types").ConfigEntry, {
    rules: import("@acot/types").NormalizedRuleConfig;
    presets?: import("@acot/types").Preset[] | undefined;
}>>>(...configs: T[]) => T;