import * as ts from "typescript";
export declare function tsModifyFile(filepath: string, langClientPath?: string): {
    code: string;
    fileModified: boolean;
};
export declare function modifyString(code: string, transformer: <T extends ts.Node>() => ts.TransformerFactory<T>): ts.TranspileOutput;
export declare function modifyFile(filepath: string, transformer: <T extends ts.Node>() => ts.TransformerFactory<T>): ts.SourceFile;
export declare function modifySourceFile(sourceFile: ts.SourceFile, transformer: <T extends ts.Node>() => ts.TransformerFactory<T>): ts.TransformationResult<ts.SourceFile>;