diff --git a/package.json b/package.json
index 769250e..be75393 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "run": "mkdir -p data && cd data && env NODE_EXTRA_CA_CERTS=pki/ca_intermediate_root_bundle.pem node download_json.js"
+    "run": "mkdir -p data && cd data && env NODE_EXTRA_CA_CERTS=../pki/ca_intermediate_root_bundle.pem node ../download_json.js"
   },
   "keywords": [],
   "author": "",
@@ -15,6 +15,7 @@
     "undici": "^5.28.0"
   },
   "devDependencies": {
+    "@tsconfig/node20": "^20.1.2",
     "@types/node": "^20.10.0"
   }
 }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 7bb4b92..4ad8936 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -13,6 +13,9 @@ dependencies:
     version: 5.28.0
 
 devDependencies:
+  '@tsconfig/node20':
+    specifier: ^20.1.2
+    version: 20.1.2
   '@types/node':
     specifier: ^20.10.0
     version: 20.10.0
@@ -24,6 +27,10 @@ packages:
     engines: {node: '>=14'}
     dev: false
 
+  /@tsconfig/node20@20.1.2:
+    resolution: {integrity: sha512-madaWq2k+LYMEhmcp0fs+OGaLFk0OenpHa4gmI4VEmCKX4PJntQ6fnnGADVFrVkBj0wIdAlQnK/MrlYTHsa1gQ==}
+    dev: true
+
   /@types/node@20.10.0:
     resolution: {integrity: sha512-D0WfRmU9TQ8I9PFx9Yc+EBHw+vSpIub4IDvQivcp26PtPrdMGAq5SDcpXEo/epqa/DXotVpekHiLNTg3iaKXBQ==}
     dependencies:
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..389d708
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,17 @@
+{
+  "$schema": "https://json.schemastore.org/tsconfig",
+  "display": "Node 20",
+  "_version": "20.1.0",
+
+  "compilerOptions": {
+    "lib": ["es2023"],
+    "module": "node16",
+    "target": "es2022",
+
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "moduleResolution": "node16"
+  }
+}