feat: TypeScript 5.4 (#23086)

Fork PR: https://github.com/denoland/TypeScript/pull/10

Closes #23080

3 files changed, 17 insertions, 0 deletions

diff --git a/tests/specs/check/cjs_default_export/__test__.jsonc b/tests/specs/check/cjs_default_export/__test__.jsonc
new file mode 100644
index 000000000..852942826
--- /dev/null
+++ b/tests/specs/check/cjs_default_export/__test__.jsonc
@@ -0,0 +1,6 @@
+{
+  "base": "npm",
+  "args": "check main.ts",
+  "output": "main.out",
+  "exitCode": 1
+}
diff --git a/tests/specs/check/cjs_default_export/main.out b/tests/specs/check/cjs_default_export/main.out
new file mode 100644
index 000000000..204488273
--- /dev/null
+++ b/tests/specs/check/cjs_default_export/main.out
@@ -0,0 +1,7 @@
+Download http://localhost:4545/npm/registry/@denotest/cjs-default-export
+Download http://localhost:4545/npm/registry/@denotest/cjs-default-export/1.0.0.tgz
+Check file:///[WILDCARD]/main.ts
+error: TS2322 [ERROR]: Type 'number' is not assignable to type 'string'.
+export const Test: string = cjsDefault.default();
+             ~~~~
+    at file:///[WILDCARD]/main.ts:4:14
diff --git a/tests/specs/check/cjs_default_export/main.ts b/tests/specs/check/cjs_default_export/main.ts
new file mode 100644
index 000000000..20a78f6d3
--- /dev/null
+++ b/tests/specs/check/cjs_default_export/main.ts
@@ -0,0 +1,4 @@
+import cjsDefault from "npm:@denotest/cjs-default-export";
+
+// should error since cjsDefault.default() is a number
+export const Test: string = cjsDefault.default();