function first first(value: string): string | undefined Returns the first thing in a list. If the value is a string, then it will return the first character. Examples Example 1 first("hello"); // "h" first([1, 2, 3]); // 1 first([]); // undefined Parameters value: string Return Type string | undefined first<T>(list: T[]): T | undefined Type Parameters T Parameters list: T[] Return Type T | undefined