import mailer from "./mailer"; describe("Mailer", () => { const fakeMailer = mailer; // @ts-expect-error ts-migrate(7034) FIXME: Variable 'sendMailOutput' implicitly has type 'any... Remove this comment to see the full error message let sendMailOutput; beforeEach(() => { process.env.URL = "http://localhost:3000"; process.env.SMTP_FROM_EMAIL = "hello@example.com"; jest.resetModules(); fakeMailer.transporter = { // @ts-expect-error ts-migrate(7006) FIXME: Parameter 'output' implicitly has an 'any' type. sendMail: (output) => (sendMailOutput = output), }; }); test("#welcome", () => { fakeMailer.welcome({ to: "user@example.com", teamUrl: "http://example.com", }); // @ts-expect-error ts-migrate(7005) FIXME: Variable 'sendMailOutput' implicitly has an 'any' ... Remove this comment to see the full error message expect(sendMailOutput).toMatchSnapshot(); }); });