export type { ChaiPlugin };
export type { Expect };
import type { use as chaiUse } from 'chai';
type FirstFunctionArgument<T> = T extends (arg: infer A) => unknown ? A : never;
type ChaiPlugin = FirstFunctionArgument<typeof chaiUse>;
type Assertion = Chai.Assertion & {
    not: Assertion;
    toContain: Assertion['contain'];
    toMatch: Assertion['match'];
    toBe: Assertion['equal'];
    toBeFalsy(): void;
    toBeTruthy(): void;
    toBee: Assertion['equal'];
};
type Expect = (value: any) => Assertion;