fix(install): cache type only module deps in `deno install` (#26497)

Fixes https://github.com/denoland/deno/issues/26180.

4 files changed, 21 insertions, 0 deletions

diff --git a/tests/specs/install/type_only_import/__test__.jsonc b/tests/specs/install/type_only_import/__test__.jsonc
new file mode 100644
index 000000000..22b8134ac
--- /dev/null
+++ b/tests/specs/install/type_only_import/__test__.jsonc
@@ -0,0 +1,10 @@
+{
+  "tempDir": true,
+  "steps": [
+    { "args": "install -e main.ts", "output": "install.out" },
+    {
+      "args": "run --check --cached-only main.ts",
+      "output": "run.out"
+    }
+  ]
+}
diff --git a/tests/specs/install/type_only_import/install.out b/tests/specs/install/type_only_import/install.out
new file mode 100644
index 000000000..1bdbec4e5
--- /dev/null
+++ b/tests/specs/install/type_only_import/install.out
@@ -0,0 +1,6 @@
+Download http://127.0.0.1:4250/@denotest/type-only-import/meta.json
+Download http://127.0.0.1:4250/@denotest/type-only-import/1.0.0_meta.json
+[UNORDERED_START]
+Download http://127.0.0.1:4250/@denotest/type-only-import/1.0.0/mod.ts
+Download http://127.0.0.1:4250/@denotest/type-only-import/1.0.0/foo.ts
+[UNORDERED_END]
diff --git a/tests/specs/install/type_only_import/main.ts b/tests/specs/install/type_only_import/main.ts
new file mode 100644
index 000000000..bf22935a2
--- /dev/null
+++ b/tests/specs/install/type_only_import/main.ts
@@ -0,0 +1,3 @@
+import { foo } from "jsr:@denotest/type-only-import";
+
+console.log(foo.bar);
diff --git a/tests/specs/install/type_only_import/run.out b/tests/specs/install/type_only_import/run.out
new file mode 100644
index 000000000..d36ac8aa3
--- /dev/null
+++ b/tests/specs/install/type_only_import/run.out
@@ -0,0 +1,2 @@
+Check [WILDCARD]main.ts
+foo