chore: update with jsr usage

.vscode/launch.json

@@ -1,24 +1,24 @@
 {
-    // Utilisez IntelliSense pour en savoir plus sur les attributs possibles.
-    // Pointez pour afficher la description des attributs existants.
-    // Pour plus d'informations, visitez : https://go.microsoft.com/fwlink/?linkid=830387
-    "version": "0.2.0",
-    "configurations": [
-        {
-            "request": "launch",
-            "name": "Launch Program",
-            "type": "node",
-            "program": "${workspaceFolder}/mod.ts",
-            "cwd": "${workspaceFolder}",
-            "env": {},
-            "runtimeExecutable": "/usr/local/bin/deno",
-            "runtimeArgs": [
-                "run",
-                "--unstable",
-                "--inspect-wait",
-                "--allow-all"
-            ],
-            "attachSimplePort": 9229
-        }
-    ]
-}
+  // Utilisez IntelliSense pour en savoir plus sur les attributs possibles.
+  // Pointez pour afficher la description des attributs existants.
+  // Pour plus d'informations, visitez : https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "request": "launch",
+      "name": "Launch Program",
+      "type": "node",
+      "program": "${workspaceFolder}/mod.ts",
+      "cwd": "${workspaceFolder}",
+      "env": {},
+      "runtimeExecutable": "/usr/local/bin/deno",
+      "runtimeArgs": [
+        "run",
+        "--unstable",
+        "--inspect-wait",
+        "--allow-all"
+      ],
+      "attachSimplePort": 9229
+    }
+  ]
+}

deno.json

@@ -8,6 +8,7 @@
     "fmt:check": "deno fmt --check",
     "fmt": "deno fmt",
     "lint": "deno lint --unstable",
-    "fileserver": "deno run --allow-read --allow-net https://deno.land/std@0.136.0/http/file_server.ts ."
-  }
+    "fileserver": "deno run --allow-read --allow-net jsr:@std/http/file-server ."
+  },
+  "unstable": ["cron", "kv"]
 }

mod.test.ts

@@ -1,4 +1,4 @@
-import { assertEquals } from "https://deno.land/std@0.123.0/testing/asserts.ts";
+import { assertEquals } from "jsr:@std/assert";
 import { upperString } from "./mod.ts";
 
 // Compact form: name and function