Use import map file

Author: zaynetro

deno.jsonc

@@ -2,9 +2,7 @@
   "tasks": {
     "dev": "deno run --unstable --allow-read --allow-write --allow-env --allow-net --no-prompt --watch main.ts",
     "test": "deno test --unstable --allow-read --allow-write .",
+    "production": "deno run --unstable --allow-read --allow-write --allow-env --allow-net --no-prompt main.ts",
   },
-  "imports": {
-    "oak/": "https://deno.land/x/oak@v12.1.0/",
-    "std/": "https://deno.land/std@0.176.0/",
-  },
+  "importMap": "./import_map.json",
 }

import_map.json

@@ -0,0 +1,6 @@
+{
+  "imports": {
+    "oak/": "https://deno.land/x/oak@v12.1.0/",
+    "std/": "https://deno.land/std@0.176.0/"
+  }
+}