diff --git a/package-lock.json b/package-lock.json
index b09fe6e..101b1d6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,6 +13,9 @@
       },
       "devDependencies": {
         "esbuild": "^0.14.43"
+      },
+      "engines": {
+        "node": "16"
       }
     },
     "node_modules/@types/eventsource": {
@@ -81,7 +84,15 @@
         "node": "*"
       }
     },
-    "node_modules/buffer": {
+    "node_modules/crc": {
+      "version": "3.8.0",
+      "resolved": "https://registry.npmjs.org/crc/-/crc-3.8.0.tgz",
+      "integrity": "sha512-iX3mfgcTMIq3ZKLIsVFAbv7+Mc10kxabAGQb8HvjA1o3T1PIYprbakQ65d3I+2HGHt6nSKkM9PYjgoJO2KcFBQ==",
+      "dependencies": {
+        "buffer": "^5.1.0"
+      }
+    },
+    "node_modules/crc/node_modules/buffer": {
       "version": "5.7.1",
       "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.7.1.tgz",
       "integrity": "sha512-EHcyIPBQ4BSGlvjB16k5KgAJ27CIsHY/2JBmCRReo48y9rQ3MaUzWX3KVlBa4U7MyX02HdVj0K7C3WaB3ju7FQ==",
@@ -104,14 +115,6 @@
         "ieee754": "^1.1.13"
       }
     },
-    "node_modules/crc": {
-      "version": "3.8.0",
-      "resolved": "https://registry.npmjs.org/crc/-/crc-3.8.0.tgz",
-      "integrity": "sha512-iX3mfgcTMIq3ZKLIsVFAbv7+Mc10kxabAGQb8HvjA1o3T1PIYprbakQ65d3I+2HGHt6nSKkM9PYjgoJO2KcFBQ==",
-      "dependencies": {
-        "buffer": "^5.1.0"
-      }
-    },
     "node_modules/detect-node": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/detect-node/-/detect-node-2.1.0.tgz",
@@ -726,21 +729,23 @@
       "resolved": "https://registry.npmjs.org/bignumber.js/-/bignumber.js-4.1.0.tgz",
       "integrity": "sha512-eJzYkFYy9L4JzXsbymsFn3p54D+llV27oTQ+ziJG7WFRheJcNZilgVXMG0LoZtlQSKBsJdWtLFqOD0u+U0jZKA=="
     },
-    "buffer": {
-      "version": "5.7.1",
-      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.7.1.tgz",
-      "integrity": "sha512-EHcyIPBQ4BSGlvjB16k5KgAJ27CIsHY/2JBmCRReo48y9rQ3MaUzWX3KVlBa4U7MyX02HdVj0K7C3WaB3ju7FQ==",
-      "requires": {
-        "base64-js": "^1.3.1",
-        "ieee754": "^1.1.13"
-      }
-    },
     "crc": {
       "version": "3.8.0",
       "resolved": "https://registry.npmjs.org/crc/-/crc-3.8.0.tgz",
       "integrity": "sha512-iX3mfgcTMIq3ZKLIsVFAbv7+Mc10kxabAGQb8HvjA1o3T1PIYprbakQ65d3I+2HGHt6nSKkM9PYjgoJO2KcFBQ==",
       "requires": {
         "buffer": "^5.1.0"
+      },
+      "dependencies": {
+        "buffer": {
+          "version": "5.7.1",
+          "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.7.1.tgz",
+          "integrity": "sha512-EHcyIPBQ4BSGlvjB16k5KgAJ27CIsHY/2JBmCRReo48y9rQ3MaUzWX3KVlBa4U7MyX02HdVj0K7C3WaB3ju7FQ==",
+          "requires": {
+            "base64-js": "^1.3.1",
+            "ieee754": "^1.1.13"
+          }
+        }
       }
     },
     "detect-node": {
diff --git a/package.json b/package.json
index bdee9c7..84f695d 100644
--- a/package.json
+++ b/package.json
@@ -3,10 +3,19 @@
   "version": "1.0.0",
   "description": "",
   "main": "index.js",
-  "type": "module",
+  "type": "commonjs",
+  "engines": {
+    "node": "16"
+  },
+  "targets": {
+    "default": {
+      "context": "node",
+      "includeNodeModules": true
+    }
+  },
   "scripts": {
-    "build": "esbuild src/index.js --platform=node --bundle --outfile=dist/index.js",
-    "watch": "esbuild src/index.js --platform=node --watch",
+    "build": "esbuild src/index.js --platform=node --bundle --target=esnext --outfile=dist/index.js",
+    "watch": "esbuild src/index.js --platform=node --watch --target=esnext",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "repository": {
diff --git a/src/index.js b/src/index.js
index 379eeac..bfe8ffc 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,26 +1,30 @@
 import { Asset, Keypair, Operation, Server, TransactionBuilder } from "stellar-sdk";
 
-const server = new Server("https://horizon-testnet.stellar.org");
+async function init() {
+    const server = new Server("https://horizon-testnet.stellar.org");
 
-const fee = await server.fetchBaseFee();
+    const fee = await server.fetchBaseFee();
 
-const tx = new TransactionBuilder(await server.loadAccount("GC2FYDXGZKVYJXTJ7U2EK4YI6YKVCSHFZQHL24VM5K7V2S3F62FKAJPS"), {
-    fee: fee.toString(),
-    networkPassphrase: 'Test SDF Network ; September 2015'
-}).addOperation(Operation.payment({
-    amount: "1",
-    asset: Asset.native(),
-    destination: "GC2FYDXGZKVYJXTJ7U2EK4YI6YKVCSHFZQHL24VM5K7V2S3F62FKAJPS",
-}))
-    .setTimeout(30)
-    .build();
+    const tx = new TransactionBuilder(await server.loadAccount("GC2FYDXGZKVYJXTJ7U2EK4YI6YKVCSHFZQHL24VM5K7V2S3F62FKAJPS"), {
+        fee: fee.toString(),
+        networkPassphrase: 'Test SDF Network ; September 2015'
+    }).addOperation(Operation.payment({
+        amount: "1",
+        asset: Asset.native(),
+        destination: "GC2FYDXGZKVYJXTJ7U2EK4YI6YKVCSHFZQHL24VM5K7V2S3F62FKAJPS",
+    }))
+        .setTimeout(30)
+        .build();
 
-const keyPair = Keypair.fromSecret("SBFOJVJHCKYKICNRCM5E65LTL7AAFJEERSRV6ZC3MMZUOCW2JWEFAA7E");
-tx.sign(keyPair);
+    const keyPair = Keypair.fromSecret("SBFOJVJHCKYKICNRCM5E65LTL7AAFJEERSRV6ZC3MMZUOCW2JWEFAA7E");
+    tx.sign(keyPair);
 
-try {
-    const response = await server.submitTransaction(tx);
-    console.log(response.id);
-} catch (e) {
-    console.error(e);
+    try {
+        const response = await server.submitTransaction(tx);
+        console.log(response.id);
+    } catch (e) {
+        console.error(e);
+    }
 }
+
+init().then(console.log);
\ No newline at end of file