String extension for toCamelCase and toPascalCase

string.extensions.ts

declare global {
    interface String {
        toCamelCase(): string;
        toPascalCase(): string;
    }
}

String.prototype.toCamelCase = function (): string {
    return this.replace(/(?:^\w|[A-Z]|-|\b\w)/g, (character, index) =>
        index === 0
            ? character.toLocaleLowerCase()
            : character.toLocaleUpperCase()
    );
};

String.prototype.toPascalCase = function (): string {
    return this.replace(/(?:^\w|[A-Z]|-|\b\w)/g, (firstCharacter) =>
        firstCharacter.toLocaleUpperCase()
    );
};

export {};