import { Rule, Tree } from '@angular-devkit/schematics';
export default function (options: any): Rule;
export declare function addImportOnly(_: any, moduleNames: string | Array<string>, importPath: string): (host: Tree) => import("@angular-devkit/schematics/src/tree/interface").Tree;
export declare function addProviderToAppModule(_: any, provider: {
    provide: string;
    useValue: string;
} | string): (host: Tree) => import("@angular-devkit/schematics/src/tree/interface").Tree;
export declare function addProviderToModuleProvider(tree: Tree, modulePath: string, provider: {
    provide: string;
    useValue: string;
} | string): void;
export declare function updateAppConfigFile(content: string): string;