3 files changed, 29 insertions, 0 deletions
diff --git a/cli/tests/testdata/npm/check_errors/main.ts b/cli/tests/testdata/npm/check_errors/main.ts
new file mode 100644
index 000000000..4b8684195
--- /dev/null
+++ b/cli/tests/testdata/npm/check_errors/main.ts
@@ -0,0 +1,3 @@
+import * as test from "npm:@denotest/check-error";
+
+console.log(test.Asdf); // should error
diff --git a/cli/tests/testdata/npm/check_errors/main_all.out b/cli/tests/testdata/npm/check_errors/main_all.out
new file mode 100644
index 000000000..96f16d0b9
--- /dev/null
+++ b/cli/tests/testdata/npm/check_errors/main_all.out
@@ -0,0 +1,19 @@
+Download http://localhost:4545/npm/registry/@denotest/check-error
+Download http://localhost:4545/npm/registry/@denotest/check-error/1.0.0.tgz
+Check file:///[WILDCARD]/check_errors/main.ts
+error: TS2506 [ERROR]: 'Class1' is referenced directly or indirectly in its own base expression.
+export class Class1 extends Class2 {
+             ~~~~~~
+    at file:///[WILDCARD]/check-error/1.0.0/index.d.ts:2:14
+
+TS2506 [ERROR]: 'Class2' is referenced directly or indirectly in its own base expression.
+export class Class2 extends Class1 {
+             ~~~~~~
+    at file:///[WILDCARD]/check-error/1.0.0/index.d.ts:5:14
+
+TS2339 [ERROR]: Property 'Asdf' does not exist on type 'typeof import("file:///[WILDCARD]/@denotest/check-error/1.0.0/index.d.ts")'.
+console.log(test.Asdf); // should error
+                 ~~~~
+    at file:///[WILDCARD]/check_errors/main.ts:3:18
+
+Found 3 errors.
diff --git a/cli/tests/testdata/npm/check_errors/main_local.out b/cli/tests/testdata/npm/check_errors/main_local.out
new file mode 100644
index 000000000..1624b98bc
--- /dev/null
+++ b/cli/tests/testdata/npm/check_errors/main_local.out
@@ -0,0 +1,7 @@
+Download http://localhost:4545/npm/registry/@denotest/check-error
+Download http://localhost:4545/npm/registry/@denotest/check-error/1.0.0.tgz
+Check file:///[WILDCARD]/check_errors/main.ts
+error: TS2339 [ERROR]: Property 'Asdf' does not exist on type 'typeof import("file:///[WILDCARD]/@denotest/check-error/1.0.0/index.d.ts")'.
+console.log(test.Asdf); // should error
+                 ~~~~
+    at file:///[WILDCARD]/npm/check_errors/main.ts:3:18