[Fix] Connection issues in example-usage & wasm

example-usage/web-client/vite.config.ts

@@ -1,6 +1,13 @@
 import { defineConfig } from 'vite';
+import fs from 'fs';
 import path from 'path';
 
+const devCertDir = path.resolve(__dirname, '../dev-cert');
+const certPath = process.env.MTP_DEV_CERT ?? path.join(devCertDir, 'cert.pem');
+const keyPath = process.env.MTP_DEV_KEY ?? path.join(devCertDir, 'key.pem');
+
+const hasDevCert = fs.existsSync(certPath) && fs.existsSync(keyPath);
+
 export default defineConfig({
   resolve: {
     alias: {
@@ -8,6 +15,12 @@ export default defineConfig({
     },
   },
   server: {
+    https: hasDevCert
+      ? {
+          cert: fs.readFileSync(certPath),
+          key: fs.readFileSync(keyPath),
+        }
+      : undefined,
     fs: {
       allow: ['.', path.resolve(__dirname, '../../wasm/pkg')],
     },