fix(add): Handle packages without root exports (#25102)

Fixes #24607.

This PR makes the logic that caches top level dependencies (things
present in import map) smarter, so we handle JSR dependencies without
root exports.

4 files changed, 17 insertions, 0 deletions

diff --git a/tests/registry/jsr/@std/testing/1.0.0/bdd.ts b/tests/registry/jsr/@std/testing/1.0.0/bdd.ts
new file mode 100644
index 000000000..a665d0603
--- /dev/null
+++ b/tests/registry/jsr/@std/testing/1.0.0/bdd.ts
@@ -0,0 +1,2 @@
+export function it(_name: string, _fn: () => void) {
+}
\ No newline at end of file
diff --git a/tests/registry/jsr/@std/testing/1.0.0/types.ts b/tests/registry/jsr/@std/testing/1.0.0/types.ts
new file mode 100644
index 000000000..feebd2603
--- /dev/null
+++ b/tests/registry/jsr/@std/testing/1.0.0/types.ts
@@ -0,0 +1 @@
+export type AssertType<A, B> = A extends B ? true : never;
\ No newline at end of file
diff --git a/tests/registry/jsr/@std/testing/1.0.0_meta.json b/tests/registry/jsr/@std/testing/1.0.0_meta.json
new file mode 100644
index 000000000..5c1bdd807
--- /dev/null
+++ b/tests/registry/jsr/@std/testing/1.0.0_meta.json
@@ -0,0 +1,6 @@
+{
+    "exports": {
+        "./bdd": "./bdd.ts",
+        "./types": "./types.ts"
+    }
+}
\ No newline at end of file
diff --git a/tests/registry/jsr/@std/testing/meta.json b/tests/registry/jsr/@std/testing/meta.json
new file mode 100644
index 000000000..d8037eabb
--- /dev/null
+++ b/tests/registry/jsr/@std/testing/meta.json
@@ -0,0 +1,8 @@
+{
+  "scope": "std",
+  "name": "path",
+  "latest": "1.0.0",
+  "versions": {
+    "1.0.0": {}
+  }
+}