function getChosenCases(options) {
	if (options.case) {
		return [options.case];
	}

	if (options.cases) {
		const cases = Object.keys(options.cases)
			.filter(cases => options.cases[cases]);

		return cases.length > 0 ? cases : ['kebabCase'];
	}

	return ['kebabCase'];
}
Get the cases specified by the option.

@param {object} options
@returns {string[]} The chosen cases.