fix(explorer): read env vars (#3709)

Author: karooolis

.changeset/proud-shirts-compete.md

@@ -0,0 +1,5 @@
+---
+"@latticexyz/explorer": patch
+---
+
+Environment variables are now loaded from the `.env` file alongside those specified via CLI flags.

packages/explorer/package.json

@@ -63,6 +63,7 @@
     "clsx": "^2.1.1",
     "cmdk": "1.0.0",
     "debug": "^4.3.4",
+    "dotenv": "^16.0.3",
     "lucide-react": "^0.408.0",
     "monaco-editor": "^0.52.0",
     "next": "14.2.5",

packages/explorer/src/bin/explorer.ts

@@ -1,4 +1,5 @@
 #!/usr/bin/env node
+import { config } from "dotenv";
 import { rm } from "fs/promises";
 import path from "path";
 import process from "process";
@@ -12,6 +13,9 @@ const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
 const packageRoot = path.join(__dirname, "..", "..");
 
+config({ path: path.join(packageRoot, ".env") });
+config({ path: path.join(packageRoot, ".env.local") });
+
 const argv = yargs(process.argv.slice(2))
   .options({
     port: {