Implement util function to generate hash string

src/index.js

@@ -8,6 +8,14 @@
  * Learn more at https://developers.cloudflare.com/workers/
  */
 
+async function getHashString(string, method = 'SHA-256') {
+	const encoder = new TextEncoder();
+	const data = encoder.encode(string);
+	const hash = await crypto.subtle.digest(method, data);
+	const hashArray = Array.from(new Uint8Array(hash));
+	return hashArray.map(b => b.toString(16).padStart(2, '0')).join('');
+}
+
 export default {
 	async fetch(request, env, ctx) {
 		return new Response('Hello World!');