import { type FeatureFlagDefinition } from "./registry.js";
type NitroPluginDef = (nitroApp: any) => void | Promise<void>;
export declare function createFeatureFlagsPlugin(options: {
    flags: readonly FeatureFlagDefinition[];
    legacyBooleanSetting?: {
        settingKey: string;
        flagKeys: readonly string[];
    };
}): NitroPluginDef;
export {};