jest-globals.d.ts•2.04 kB
/**
* Jest global type declarations
* This file adds typings for Jest globals to reduce TypeScript errors in test files
*/
import '@jest/globals';
// Declare global Jest types explicitly to help TypeScript
declare global {
// Jest testing functions
const describe: typeof import('@jest/globals').describe;
const it: typeof import('@jest/globals').it;
const test: typeof import('@jest/globals').test;
const expect: typeof import('@jest/globals').expect;
const beforeAll: typeof import('@jest/globals').beforeAll;
const beforeEach: typeof import('@jest/globals').beforeEach;
const afterAll: typeof import('@jest/globals').afterAll;
const afterEach: typeof import('@jest/globals').afterEach;
// Jest mock functionality
const jest: typeof import('@jest/globals').jest;
// Additional common helpers
namespace jest {
interface Mock<T = any, Y extends any[] = any[]> extends Function {
new (...args: Y): T;
(...args: Y): T;
mockImplementation(fn: (...args: Y) => T): this;
mockImplementationOnce(fn: (...args: Y) => T): this;
mockReturnValue(value: T): this;
mockReturnValueOnce(value: T): this;
mockResolvedValue(value: T): this;
mockResolvedValueOnce(value: T): this;
mockRejectedValue(value: any): this;
mockRejectedValueOnce(value: any): this;
mockClear(): this;
mockReset(): this;
mockRestore(): this;
mockName(name: string): this;
getMockName(): string;
mock: {
calls: Y[];
instances: T[];
contexts: any[];
lastCall: Y;
results: Array<{ type: string; value: T }>;
};
}
function fn<T = any, Y extends any[] = any[]>(): Mock<T, Y>;
function fn<T = any, Y extends any[] = any[]>(implementation: (...args: Y) => T): Mock<T, Y>;
function spyOn<T extends object, M extends keyof T>(
object: T,
method: M & string
): Mock<Required<T>[M]>;
function mocked<T>(item: T, deep?: boolean): jest.Mocked<T>;
}
}
export {};