check compulsory fields in an object

check_compulsory_fields.md

// @param obj: for which the given properties exist
// @param fields[]: is an array of given object properties
// @return false if every field is not blank
// @return an array of labels that are blank

const checkCompulsoryFields = (obj: any, fields: string[]): boolean | string[] => {
	const list = fields.filter(field => field in obj && obj[field].trim() === "")
	return list.length === 0 ? false : list
}