const help = captureHelpOutput(program);

expect(help).toContain("BANNER-LINE");

const [version, options] = (formatCliBannerLineMock.mock.calls[0] as unknown as

const [version, options] = (formatCliBannerLineMock.mock.calls.at(0) as unknown as

| [string, { mode?: string }]

| undefined) ?? [undefined, undefined];

expect(version).toBe(testProgramContext.programVersion);