diff --git a/test/test_other.py b/test/test_other.py
index 2513616c964c7..00a047e419a6e 100644
--- a/test/test_other.py
+++ b/test/test_other.py
@@ -345,6 +345,11 @@ def run_on_pty(self, cmd):
       os.close(master)
       os.close(slave)
 
+  def run_tsc(self, args):
+    # We use skipLibCheck to prevent tsc from type checking the node_modules in the parent directory
+    # (e.g. in a single test mode).
+    return self.run_process(shared.get_npm_cmd('tsc') + ['--skipLibCheck'] + args)
+
   # Test that running `emcc -v` always works even in the presence of `EMCC_CFLAGS`.
   # This needs to work because many tools run `emcc -v` internally and it should
   # always work even if the user has `EMCC_CFLAGS` set.
@@ -3566,8 +3571,7 @@ def test_embind_tsgen_end_to_end(self, opts, tsc_opts):
       # also run the output JS file as a module in node.
       copy_asset('other/embind_tsgen_package.json', 'package.json')
 
-    cmd = shared.get_npm_cmd('tsc') + ['embind_tsgen.d.ts', 'main.ts', '--target', 'es2021'] + tsc_opts
-    shared.check_call(cmd)
+    self.run_tsc(['embind_tsgen.d.ts', 'main.ts', '--target', 'es2021'] + tsc_opts)
     actual = read_file('embind_tsgen.d.ts')
     self.assertFileContents(test_file('other/embind_tsgen_module.d.ts'), actual)
     self.assertContained('main ran\nts ran', self.run_js('main.js'))
@@ -3727,8 +3731,7 @@ def test_emit_tsd(self):
                      self.get_cflags())
     self.assertFileContents(test_file('other/test_emit_tsd.d.ts'), read_file('test_emit_tsd.d.ts'))
     # Test that the output compiles with a TS file that uses the definitions.
-    cmd = shared.get_npm_cmd('tsc') + [test_file('other/test_tsd.ts'), '--noEmit']
-    shared.check_call(cmd)
+    self.run_tsc([test_file('other/test_tsd.ts'), '--noEmit'])
 
   @requires_dev_dependency('typescript')
   def test_emit_tsd_sync_compilation(self):
@@ -3739,8 +3742,7 @@ def test_emit_tsd_sync_compilation(self):
                      self.get_cflags())
     self.assertFileContents(test_file('other/test_emit_tsd_sync.d.ts'), read_file('test_emit_tsd_sync.d.ts'))
     # Test that the output compiles with a TS file that uses the definitions.
-    cmd = shared.get_npm_cmd('tsc') + [test_file('other/test_tsd_sync.ts'), '--noEmit']
-    shared.check_call(cmd)
+    self.run_tsc([test_file('other/test_tsd_sync.ts'), '--noEmit'])
 
   def test_emit_tsd_wasm_only(self):
     expected = 'Wasm only output is not compatible with --emit-tsd'