import { Tree } from '@angular-devkit/schematics';
import * as ts from 'typescript';
export declare function insertBeforeLastElement(host: Tree, filePath: string, componentToAdd: string): void;
export declare function insertAfterFirstElement(host: Tree, filePath: string, componentToAdd: string): void;
/**
 * Adds a module import
 */
export declare function addImportToFile(host: Tree, fileToEdit: string, symbolName: string, moduleName: string, isDefault?: boolean): Tree;
/**
 * Adds a file import
 */
export declare function addFileImportToFile(host: Tree, modulePath: string, fileNameToAdd: string, addEmptyLine?: boolean, patternToRemove?: RegExp): Tree;
/**
 * Determine if an import already exists.
 */
export declare function findFileImport(source: ts.SourceFile, fileName: string, patternToRemove?: RegExp): ts.Node | undefined;
/**
 * Determine if an import already exists.
 */
export declare function findModuleImport(source: ts.SourceFile, classifiedName: string, importPath: string): ts.Node | undefined;