toEqual does not deep equal check custom error objects

index.test.ts

export class EError extends Error {

    type: string;
    data: { [key: string]: any } | undefined;

    constructor(message: string, type: string, data?: { [key: string]: any }) {
        super(message);
        this.type = type;
        this.data = data;
        this.name = this.constructor.name;
        if (typeof Error.captureStackTrace === "function") {
            Error.captureStackTrace(this, this.constructor);
        } else {
            this.stack = (new Error(message)).stack;
        }
    }
}

export function createEError(message: string, type: string, data?: { [key: string]: any }): EError {
    return new EError(message, type, data);
}

test("test error", async () => {
    const error1 = createEError("test", "test", {number: 2});
    const error2 = createEError("test", "test", {number: 3});
    const fn = async () => {
        throw error1;
    };
    expect(error1).toEqual(error2); // this should fail, but it passes
    await expect(fn()).rejects.toEqual(error2); // this should fail, but it passes
});