import { AnyFunction } from './core';
export declare function assert(expression: any, message?: string, verboseDebugInfo?: string | (() => string), stackCrawlMark?: AnyFunction): asserts expression;
export declare function fail(message?: string, stackCrawlMark?: AnyFunction): never;
export declare function assertDefined<T>(value: T, message?: string, stackCrawlMark?: AnyFunction): asserts value is NonNullable<T>;
export declare function assertEachDefined<T>(value: T[], message?: string, stackCrawlMark?: AnyFunction): asserts value is NonNullable<T>[];
export declare function assertNever(member: never, message?: string, stackCrawlMark?: AnyFunction): never;
export declare function getFunctionName(func: AnyFunction): any;
/**
 * Formats an enum value as a string for debugging and debug assertions.
 */
export declare function formatEnum(value: number | undefined, enumObject: any, isFlags?: boolean): string;
export declare function getErrorString(error: any): string;
export declare function getSerializableError(error: any): Error | undefined;