export interface ShallowMatchers { toHaveFoundOne(): void; toHaveFoundMoreThan(count: number): void; toHaveFoundLessThan(count: number): void; toHaveFound(count: number): void; } declare global { namespace jasmine { interface ArrayLikeMatchers extends ShallowMatchers { } } namespace jest { interface ArrayLikeMatchers extends ShallowMatchers { } interface Matchers extends ShallowMatchers { } } }