/// <reference types="ts-expose-internals/typescript" />
import * as ts from 'typescript';
export declare function exit(exitCode: number): never;
export declare function findConfigFile(initialDir: string): Promise<string>;
export declare function formatDiagnostics(diagnostics: readonly ts.Diagnostic[], host?: ts.CompilerHost): string;
export declare function handleDiagnostics(diagnostics: readonly ts.Diagnostic[], host: ts.CompilerHost | undefined, errorPrefix?: string): void;
export declare function pick<T extends object, K extends keyof T>(obj: T, keys: K[]): Pick<T, K>;
export declare function omit<T extends object, K extends keyof T>(obj: T, keys: K[]): Omit<T, K>;