toUpperCase

function toUpperCase(value: string, options: ToUpperCaseOptions = {}): string;

The counterpart of toLowerCase, with the same validation and the same optional trim.

Parameters

Parameter	Type	Description
`value`	`string`	The string to convert. It must not be empty.
`options` (optional) `= {}`	`ToUpperCaseOptions`	`trim` trims the string and collapses runs of whitespace into single spaces.

string — the upper-cased string.

Exception	Condition
`EmptyStringException`	the value is not a string, or is empty.

toUpperCase("Hello"); // => "HELLO"

23 September 2026

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