export type ExtensionSourceKind = "setup" | "onReady" | "onClose" | "declaration";
export type InferenceConfidence = "high" | "medium" | "low";
export interface ServiceIndexEntry {
    filePath: string;
    importPath: string;
    serviceKey: string;
    keySegments: string[];
}
export interface AppExtensionIndexEntry {
    pluginFile: string;
    propertyKey: string;
    inferredTypeText: string;
    sourceKind: ExtensionSourceKind;
    confidence: InferenceConfidence;
}
export interface ProjectIndex {
    serviceEntries: ServiceIndexEntry[];
    appExtensions: AppExtensionIndexEntry[];
}
export declare function buildProjectIndex(rootDir: string): Promise<ProjectIndex>;