Whether the value has the property or not. The difference from Object.hasOwn is that it has a Type guard.

Whether the value is AsyncIterable or not.

Whether the value is bigint or not.

Whether the value is boolean or not.

Whether the value is Date or not.

Whether the value is Error or not.

Whether the value is even or not.

Whether the value is false or not.

Whether the value is FalsyLike or not.

Whether the value is Function or not.

Whether the value is Hex color or not.

Whether the value is hostname format or not.

Whether the value is Iterable or not.

Whether the value is negative number or not.

Whether the value is non negative integer or not.

Whether the value is null or not.

Whether the value is null or undefined or not.

Whether the value is number or not.

Whether the value is object or not.

Whether the value is odd or not.

Whether the value is positive number or not.

Whether the value is Primitive or not.

Whether the value is Promise or not.

Whether the value is RFC 3339 date format or not. The format compliant with RFC 3339, 5.6. Internet Date/Time Format, full-date

Whether the value is RFC 3339 date time format or not. The format compliant with RFC 3339, 5.6. Internet Date/Time Format, date-time

Whether the value is RFC 3339 time format or not. The format compliant with RFC 3339, 5.6. Internet Date/Time Format, full-time

Whether the value is string or not.

Whether the value is symbol or not.

Whether the value is true or not.

Whether the value is TruthyLike or not.

Whether the value is undefined or not.

Whether the value is valid Date or not.

Types for date format.

Types for date time format.

Types for Primitive value.

Types for time format.