export type FeatureSource = {
    kind: "bundled" | "npm";
    root: string;
    packageName?: string;
};
export declare function bundledFeatureRoot(featureId: string): string | null;
/** Installed plugins under node_modules/@irwin/* with manifest.json. */
export declare function npmFeatureRoots(projectRoot: string): FeatureSource[];
export declare function resolveFeatureSource(featureId: string, projectRoot?: string): FeatureSource;
export declare function listAllFeatureIds(projectRoot?: string): string[];
export declare function featureFilesDir(source: FeatureSource, filesFrom?: string): string;