function readOptionValue(argv, index, optionName) {

const value = argv[index + 1];

if (value === undefined || value === "" || value.startsWith("--")) {

if (value === undefined || value === "" || value.startsWith("-")) {

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

}

return value;

expect(() => parseArgs([flag, "--target", "generated-docs"])).toThrow(

`${flag} requires a value`,

);

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

}

});

});