init commit,

99_references/supabase-examples/edge-functions/supabase/functions/postgres-on-the-edge/index.ts

@@ -0,0 +1,48 @@
+import { Pool } from 'https://deno.land/x/postgres@v0.17.0/mod.ts'
+
+// Create a database pool with one connection.
+const pool = new Pool(
+  {
+    tls: { enabled: false },
+    database: 'postgres',
+    hostname: Deno.env.get('DB_HOSTNAME'),
+    user: Deno.env.get('DB_USER'),
+    port: 6543,
+    password: Deno.env.get('DB_PASSWORD'),
+  },
+  1
+)
+
+Deno.serve(async (_req) => {
+  try {
+    // Grab a connection from the pool
+    const connection = await pool.connect()
+
+    try {
+      // Run a query
+      const result = await connection.queryObject`SELECT * FROM animals`
+      const animals = result.rows // [{ id: 1, name: "Lion" }, ...]
+
+      // Encode the result as pretty printed JSON
+      const body = JSON.stringify(
+        animals,
+        (_key, value) => (typeof value === 'bigint' ? value.toString() : value),
+        2
+      )
+
+      // Return the response with the correct content type header
+      return new Response(body, {
+        status: 200,
+        headers: {
+          'Content-Type': 'application/json; charset=utf-8',
+        },
+      })
+    } finally {
+      // Release the connection back into the pool
+      connection.release()
+    }
+  } catch (err) {
+    console.error(err)
+    return new Response(String(err?.message ?? err), { status: 500 })
+  }
+})