const boolean = function (value: any): boolean { switch (Object.prototype.toString.call(value)) { case '[object String]': return [ 'true', 't', 'yes', 'y', 'on', '1' ].includes(value.trim().toLowerCase()); case '[object Number]': return value.valueOf() === 1; case '[object Boolean]': return value.valueOf(); default: return false; } }; export { boolean };