import * as jestUtils from "@jest/expect-utils";
const eq = jestUtils.equals;

/**
 * expect({ a: 123 }).toEqual({ a: 123 }) -> true
 * @param a
 * @returns toEqual(b) -> boolean
 */
export default function (a: any) {
  try {
    return {
      toEqual(b: any) {
        return eq(a, b);
      },
      not: {
        toEqual(b: any) {
          return !eq(a, b);
        },
      },
    };
  } catch (error) {
    throw error;
  }
}