std/is/defined
Checks if the given value is defined.
Type signature
(x?: unknown) => booleanExamples
defined(undefined);
// ⇒ false
defined(null);
// ⇒ true
defined(0);
// ⇒ true
defined({ a: 1 });
// ⇒ true
Questions
- How to check if a given value is defined?
- How to check if a given value is not undefined?