apps-script-utils 2.1.1 Help

nonValidDomain

function nonValidDomain(domain: string): boolean;

nonValidDomain(value) is the same test as !isValidDomain(value), written so that a guard clause reads as a sentence rather than as a negation.

Labels separated by single dots, with no leading or trailing dot or hyphen and no empty label. It is a syntax check: whether the domain resolves is another question.

isX and nonX answer a question and never interrupt control flow; requireX and requireNonX hand the value back or throw. The scheme is explained in Validation conventions.

Parameters

Parameter

Type

Description

domain

string

The value to check.

Returns

boolean — true when the value is not a domain name; otherwise false.

Examples

What passes and what does not

nonValidDomain("-example.com"); // => true nonValidDomain("example..com"); // => true nonValidDomain("example.com."); // => true nonValidDomain(""); // => true nonValidDomain("example.com"); // => false nonValidDomain("sub.example.co.uk"); // => false

See also

Source

src/net/path/nonValidDomain.ts

23 September 2026
nonRelativenormalize

This documentation was generated with AI (Claude) from the library's source code.