import "../../_dnt.polyfills.js";
import "./init.js";
/** Public API contract for error class. */
type ErrorClass = new (...args: any[]) => Error;
/** Assert that two values are deeply equal. */
export declare function assertEquals<T>(actual: T, expected: T, msg?: string): void;
/** Assert that two values are not deeply equal. */
export declare function assertNotEquals<T>(actual: T, expected: T, msg?: string): void;
/** Assert that two values are strictly equal. */
export declare function assertStrictEquals<T>(actual: T, expected: T, msg?: string): void;
/** Assert that a value is truthy. */
export declare function assert(expr: unknown, msg?: string): asserts expr;
/** Assert that a value is not null or undefined. */
export declare function assertExists<T>(actual: T, msg?: string): asserts actual is NonNullable<T>;
/** Assert that a synchronous function throws. */
export declare function assertThrows(fn: () => unknown, errorClassOrMsg?: ErrorClass | string, msgIncludesOrMsg?: string, msg?: string): unknown;
/** Assert that an async function rejects, returning the rejection reason. */
export declare function assertRejects(fn: () => Promise<unknown>, errorClassOrMsg?: ErrorClass | string, msgIncludesOrMsg?: string, msg?: string): Promise<unknown>;
/** Assert that a string contains another string. */
export declare function assertStringIncludes(actual: string, expected: string, msg?: string): void;
/** Assert that a string matches a regular expression. */
export declare function assertMatch(actual: string, expected: RegExp, msg?: string): void;
/** Assert that a value is an instance of a constructor. */
export declare function assertInstanceOf<T>(actual: unknown, expectedType: abstract new (...args: any[]) => T, msg?: string): asserts actual is T;
/** Fail the current assertion immediately. */
export declare function fail(msg?: string): never;
/** Assert that two values are not strictly equal. */
export declare function assertNotStrictEquals<T>(actual: T, expected: T, msg?: string): void;
/** Assert that an object contains matching properties. */
export declare function assertObjectMatch(actual: Record<string, unknown>, expected: Record<string, unknown>, msg?: string): void;
/** Assert that a number is greater than another number. */
export declare function assertGreater(actual: number, expected: number, msg?: string): void;
/** Assert that a number is greater than or equal to another number. */
export declare function assertGreaterOrEqual(actual: number, expected: number, msg?: string): void;
/** Assert that a number is less than another number. */
export declare function assertLess(actual: number, expected: number, msg?: string): void;
/** Assert that a number is less than or equal to another number. */
export declare function assertLessOrEqual(actual: number, expected: number, msg?: string): void;
export {};
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