diff --git a/.npmignore b/.npmignore
index f8268c1881..359a491531 100644
--- a/.npmignore
+++ b/.npmignore
@@ -4,6 +4,7 @@ examples
 
 # sources are inlined
 src
+!build/ngtsc/reflection/src
 
 # Development scripts
 scripts
diff --git a/scripts/test-examples.js b/scripts/test-examples.js
index dec52e1d31..47bd6e45cb 100755
--- a/scripts/test-examples.js
+++ b/scripts/test-examples.js
@@ -6,8 +6,6 @@ const execa = require('execa');
 const logger = require('./logger');
 const { exampleAppsToRun, rootDir } = require('./paths');
 
-const jestArgs = process.argv.slice(3);
-
 const executeTest = (projectPath) => {
   // we change current directory
   process.chdir(projectPath);
@@ -38,14 +36,8 @@ const executeTest = (projectPath) => {
   });
 
   // then we can run the tests
-  const cmdLine = ['yarn', 'test'];
-  const cmdESMLine = ['yarn', 'test-esm'];
-  if (jestArgs.length) {
-    cmdLine.push('--');
-    cmdESMLine.push('--');
-    cmdLine.push(...jestArgs);
-    cmdESMLine.push(...jestArgs);
-  }
+  const cmdLine = ['yarn', 'test', '--no-cache'];
+  const cmdESMLine = ['yarn', 'test-esm', '--no-cache'];
 
   logger.log('starting the CommonJS tests using:', ...cmdLine);
   logger.log();