Switch from Node.js crypto to Web Crypto, remove error on browser version

Author: flevi29

src/token.ts

@@ -2,8 +2,8 @@ import { TokenSearchRules, TokenOptions } from "./types";
 import { MeiliSearchError } from "./errors";
 import { validateUuid4 } from "./utils";
 
-function encode64(data: any) {
-  return Buffer.from(JSON.stringify(data)).toString("base64");
+function encode64(data: unknown): string {
+  return btoa(JSON.stringify(data))
 }
 
 /**
@@ -17,16 +17,30 @@ function encode64(data: any) {
 async function sign(
   apiKey: string,
   encodedHeader: string,
-  encodedPayload: string,
-) {
-  const { createHmac } = await import("node:crypto");
-
-  return createHmac("sha256", apiKey)
-    .update(`${encodedHeader}.${encodedPayload}`)
-    .digest("base64")
-    .replace(/\+/g, "-")
-    .replace(/\//g, "_")
-    .replace(/=/g, "");
+  encodedPayload: string
+): Promise<string> {
+  const textEncoder = new TextEncoder()
+
+  const cryptoKey = await crypto.subtle.importKey(
+    'raw',
+    textEncoder.encode(apiKey),
+    { name: 'HMAC', hash: 'SHA-256' },
+    false,
+    ['sign']
+  )
+
+  const signature = await crypto.subtle.sign(
+    'HMAC',
+    cryptoKey,
+    textEncoder.encode(`${encodedHeader}.${encodedPayload}`)
+  )
+
+  const digest = btoa(String.fromCharCode(...new Uint8Array(signature)))
+    .replace(/\+/g, '-')
+    .replace(/\//g, '_')
+    .replace(/=/g, '')
+
+  return digest
 }
 
 /**