feat: add method overloads

For better type information

Author: wolfy1339

src/node/sign.ts

@@ -2,6 +2,8 @@ import { createHmac } from "node:crypto";
 import { Algorithm, type SignOptions } from "../types.js";
 import { VERSION } from "../version.js";
 
+export async function sign(secret: string, payload: string): Promise<string>;
+export async function sign(options: SignOptions, payload: string): Promise<string>;
 export async function sign(
   options: SignOptions | string,
   payload: string,

src/web.ts

@@ -45,6 +45,8 @@ async function importKey(secret: string, algorithm: AlgorithmLike) {
   );
 }
 
+export async function sign(secret: string, payload: string): Promise<string>;
+export async function sign(options: SignOptions, payload: string): Promise<string>;
 export async function sign(options: SignOptions | string, payload: string) {
   const { secret, algorithm } =
     typeof options === "object"