$ gnpm install @jest/types
This package contains shared types of Jest's packages.
If you are looking for types of Jest globals, you can import them from @jest/globals
package:
import {describe, expect, it} from '@jest/globals';
describe('my tests', () => {
it('works', () => {
expect(1).toBe(1);
});
});
If you prefer to omit imports, a similar result can be achieved installing the @types/jest package. Note that this is a third party library maintained at DefinitelyTyped and may not cover the latest Jest features.
Another use-case for @types/jest
is a typed Jest config as those types are not provided by Jest out of the box:
// jest.config.ts
import {Config} from '@jest/types';
const config: Config.InitialOptions = {
// some typed config
};
export default config;
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