feat: Print deprecation message for npm packages (#24992)

This commit adds ability to print deprecation notices
for npm packages that have been marked as deprecated.

Closes #24013

1 files changed, 25 insertions, 0 deletions

diff --git a/tests/specs/install/install_deprecated_package/__test__.jsonc b/tests/specs/install/install_deprecated_package/__test__.jsonc
new file mode 100644
index 000000000..23c9cdb3f
--- /dev/null
+++ b/tests/specs/install/install_deprecated_package/__test__.jsonc
@@ -0,0 +1,25 @@
+{
+  "tempDir": true,
+  "envs": {
+    "DENO_FUTURE": "1"
+  },
+  "steps": [
+    {
+      "args": "install npm:@denotest/deprecated-package",
+      "output": "install.out"
+    },
+    {
+      // make sure the dep got cached
+      "args": "run --cached-only main.js",
+      "exitCode": 0,
+      "output": ""
+    },
+    {
+      "args": [
+        "eval",
+        "console.log(Deno.readTextFileSync('package.json').trim())"
+      ],
+      "output": "package.json.out"
+    }
+  ]
+}