import * as typescript from 'typescript';
import { SourceFileModification } from './source-file-modification.interface';
export declare function openSourceFileFromFileSystem(filename: string): typescript.SourceFile;
export declare function openSourceFile(filename: string, readSourceText: () => string): typescript.SourceFile;
export declare function getNgModuleNode(sourceFile: typescript.SourceFile): typescript.ObjectLiteralExpression;
export declare function getAllImportDeclarations(sourceFile: typescript.SourceFile): typescript.Statement[];
export declare function getLastImportDeclaration(sourceFile: typescript.SourceFile): typescript.Statement;
export declare function getInterfaceDeclarationByType(sourceFile: typescript.SourceFile, type: string): typescript.InterfaceDeclaration;
export declare function getVariableDeclaration(sourceFile: typescript.SourceFile, type: string): typescript.VariableDeclaration;
export declare function getTypeArgumentOfVariableDeclaration(variableDeclaration: typescript.VariableDeclaration): typescript.TypeNode;
export declare function getObjectProperty(properties: typescript.NodeArray<typescript.ObjectLiteralElement>, propertyName: string): typescript.PropertyAssignment;
export declare function filterNodeArray<T extends typescript.Node>(array: typescript.NodeArray<T>, condition: (node: T) => boolean): typescript.NodeArray<T>;
export declare function insertIntoArray(array: typescript.NodeArray<typescript.Node>, symbolToInsert: string): SourceFileModification;