import * as ts from '@schematics/angular/third_party/github.com/Microsoft/TypeScript/lib/typescript';
import { Change } from '@schematics/angular/utility/change';
import { Tree } from '@angular-devkit/schematics';
export declare class RootModule {
    protected static _instance: RootModule;
    readonly path: string;
    readonly source: ts.SourceFile;
    readonly tree: Tree;
    protected importPath: string;
    protected allChanges: Array<Change>;
    static getInstance(tree: Tree): RootModule;
    protected constructor(tree: Tree);
    setDefaultImportPath(path: string): void;
    getDefaultImportPath(): string;
    getAllChanges(): ReadonlyArray<Change>;
    /**
     * Allows to overwrite the changes
     * @example leaving only insertions:
     * const root = RootModule.getInstance(tree, '@my/lib');
     * root.addExport(...); root.addImport(...); etc
     * root.setAllChanges(root.getAllChanges()
     *      .filter(change => change instanceof InsertChange));
     * root.applyAllChanges();
     */
    setAllChanges(allChanges: Array<Change>): void;
    applyAllChanges(): Tree;
    /**
     * Clears list of changes, doesn't revert them if already applied
     */
    discardAllChanges(): void;
    /**
     * Add Import statement (`import { symbolName } from fileName`) if the import doesn't exist already.
     * @param symbolName (item to import)
     * @param fileName (path to the file)
     * @param isDefault (if true, import follows style for importing default exports)
     * @return Change
     */
    insertImport(symbolName: string, fileName: string, isDefault?: boolean): Change;
    /**
     * Custom function to insert a declaration (component, pipe, directive)
     * into NgModule declarations. It also imports the component.
     */
    addDeclaration(classifiedName: string, importPath?: string): Array<Change>;
    /**
     * Custom function to insert an NgModule into NgModule imports. It also imports the module.
     */
    addImport(classifiedName: string, importPath?: string): Array<Change>;
    /**
     * Custom function to insert a provider into NgModule. It also imports it.
     */
    addProvider(classifiedName: string, importPath?: string): Array<Change>;
    /**
     * Custom function to insert an export into NgModule. It also imports it.
     */
    addExport(classifiedName: string, importPath?: string): Array<Change>;
    /**
     * Custom function to insert an export into NgModule. It also imports it.
     */
    addBootstrap(classifiedName: string, importPath?: string): Array<Change>;
    /**
     * Custom function to insert an entryComponent into NgModule. It also imports it.
     * @deprecated - Since Angular 9.0.0 with Ivy, entryComponents is no longer necessary.
     */
    addEntryComponent(classifiedName: string, importPath?: string): Array<Change>;
    /**
     * Determine if an import already exists.
     */
    isImported(classifiedName: string, importPath?: string): boolean;
    /**
     * Returns the RouterModule declaration from NgModule metadata, if any.
     */
    getRouterModuleDeclaration(): ts.Expression | undefined;
    /**
     * Adds a new route declaration to a router module (i.e. has a RouterModule declaration)
     */
    addRouteDeclarationToModule(fileToAdd: string, routeLiteral: string): Change;
    getDecoratorMetadata(metadataField: string, symbolName: string, importPath?: string): Array<Change>;
    addSymbolToNgModuleMetadata(metadataField: string, symbolName: string, importPath?: string): Array<Change>;
    protected getImportPath(path?: string): string;
}