diff --git a/.vscode/launch.json b/.vscode/launch.json
index 1fb22ce..113db74 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -6,19 +6,25 @@
   "configurations": [
     {
       "name": "relayer",
-      "type": "node",
+      "type": "pwa-node",
       "request": "launch",
-      "runtimeExecutable": "node",
+      "program": "${workspaceFolder}/src/index.ts",
+      "cwd": "${workspaceFolder}",
+      "runtimeExecutable": "npx",
       "runtimeArgs": [
-        "--inspect-brk=8888",
-        "--nolazy",
+        "ts-node",
+        "--inspect-brk=8888"
+      ],
+      "args": [
         "-r",
         "ts-node/register/transpile-only",
+        "src/index.ts"
+      ],
+      "skipFiles": [
+        "<node_internals>/**",
+        "**/__awaiter**",
       ],
-      "args": ["src/index"],
-      "cwd": "${workspaceRoot}",
-      "internalConsoleOptions": "openOnSessionStart",
-      "skipFiles": ["<node_internals>/**"]
+      "internalConsoleOptions": "openOnSessionStart"
     }
   ]
 }
diff --git a/package.json b/package.json
index ef28a09..a46883d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,7 @@
 {
   "name": "acala-wormhole-relayer",
   "version": "1.6.2",
+  "type": "module",
   "description": "",
   "main": "lib/index.js",
   "types": "lib/index.d.ts",
diff --git a/tsconfig.json b/tsconfig.json
index d401182..1a32eb6 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,8 +1,8 @@
 {
   "compilerOptions": {
     "outDir": "dist",
-    "target": "es2020",
-    "module": "commonjs",
+    "target": "ESNext",
+    "module": "ESNext",
     "moduleResolution": "node",
     "strictNullChecks": true,
     "lib": ["es2019"],
@@ -11,5 +11,11 @@
     "esModuleInterop": true
   },
   "include": ["src"],
-  "exclude": ["**/__tests__/*"]
+  "exclude": ["**/__tests__/*"],
+  "ts-node": {
+    "transpileOnly": true,
+    "files": true,
+    "esm": true,
+    "experimentalSpecifierResolution": "node",
+  }
 }