Type Alias FirstLetterUppercase<T>

FirstLetterUppercase: T extends `${infer First}${infer Rest}`
? `${Uppercase<First>}${Rest}`
: T

Makes only the first letter of a string type uppercase while preserving the case of the rest.

Type Parameters

T extends string

Example

import {FirstLetterUppercase} from '@augment-vir/common';
type Example1 = FirstLetterUppercase<'helloWorld'>; // 'HelloWorld'
type Example2 = FirstLetterUppercase<'hELLO'>; // 'HELLO'
type Example3 = FirstLetterUppercase<'a'>; // 'A'
type Example4 = FirstLetterUppercase<''>; // ''

Package

@augment-vir/common