interface PartialAngularJson {
    projects?: {
        [key: string]: {
            architect?: {
                build?: {
                    configurations?: {
                        production?: {
                            sourceMap?: boolean;
                        } & Record<string, unknown>;
                    };
                };
            };
        };
    };
}
export declare function addSourcemapEntryToAngularJSON(): Promise<void>;
/**
 * Extracted from `addSourcemapEntryToAngularJSON` and exported to allow for easier testing.
 */
export declare function addSourceMapsSetting(angularJson: PartialAngularJson): PartialAngularJson | undefined;
export {};