function readRequiredValue(argv, index, flag) {

const value = argv[index + 1];

if (!value || value.startsWith("--")) {

if (!value || value.startsWith("-")) {

throw new Error(`${flag} requires a value`);

}

return value;

"--markdown",

]) {

expect(() => parseArgs([flag, "--json"])).toThrow(`${flag} requires a value`);

expect(() => parseArgs([flag, "-h"])).toThrow(`${flag} requires a value`);

}

});