diff --git a/build-scripts/jasmine.sh b/build-scripts/jasmine.sh
new file mode 100755
index 00000000..733bf727
--- /dev/null
+++ b/build-scripts/jasmine.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+# Run the test commands and fail the script if any of them failed
+EXIT_STATUS=0
+./packages/google-closure-compiler/test/support/jasmine-launcher.js "$@" || EXIT_STATUS=$?
+exit $EXIT_STATUS
diff --git a/build-scripts/test.sh b/build-scripts/test.sh
index bcb74ebe..733bf727 100755
--- a/build-scripts/test.sh
+++ b/build-scripts/test.sh
@@ -1,6 +1,5 @@
 #!/usr/bin/env bash
 # Run the test commands and fail the script if any of them failed
 EXIT_STATUS=0
-yarn workspaces run test "$@" || EXIT_STATUS=$?
-jasmine --reporter=jasmine-console-reporter test/*.js "$@" || EXIT_STATUS=$?
+./packages/google-closure-compiler/test/support/jasmine-launcher.js "$@" || EXIT_STATUS=$?
 exit $EXIT_STATUS
diff --git a/package.json b/package.json
index a081923a..d2c78be7 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
   "scripts": {
     "build": "./build-scripts/build.sh",
     "test": "./build-scripts/test.sh",
-    "test:root": "jasmine --reporter=jasmine-console-reporter test/*.js",
+    "test:root": "./build-scripts/jasmine.sh --reporter=jasmine-console-reporter test/*.js",
     "clean": "./build-scripts/clean.sh",
     "version": "./build-scripts/version-packages.js",
     "publish-packages": "./build-scripts/publish.js"
diff --git a/packages/google-closure-compiler/package.json b/packages/google-closure-compiler/package.json
index 9a451d84..2b5a0c11 100644
--- a/packages/google-closure-compiler/package.json
+++ b/packages/google-closure-compiler/package.json
@@ -64,7 +64,7 @@
   },
   "scripts": {
     "build": "echo \"google-closure-compiler build\"",
-    "test": "jasmine --reporter=jasmine-console-reporter test/*.js --"
+    "test": "./test/support/jasmine.sh --reporter=jasmine-console-reporter 'test/*.js'"
   },
   "engines": {
     "node": ">=18"
diff --git a/packages/google-closure-compiler/test/support/jasmine-launcher.js b/packages/google-closure-compiler/test/support/jasmine-launcher.js
new file mode 100755
index 00000000..a220ac72
--- /dev/null
+++ b/packages/google-closure-compiler/test/support/jasmine-launcher.js
@@ -0,0 +1,90 @@
+#!/usr/bin/env node
+/*
+ * Copyright 2025 The Closure Compiler Authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * @fileoverview
+ *
+ * Execute jasmine with the arguments in the correct order.
+ * Extra arguments passed to test specs must be preceded by an '--' argument.
+ * We want to keep the arguments in the same order, but arguments for the jasmine runner itself must
+ * come first followed by a '--' argument and then finally by any extra arguments.
+ */
+
+import {spawn} from 'node:child_process';
+import parseArgs from 'minimist';
+
+const supportedJasmineFlags = new Set([
+  'parallel',
+  'no-color',
+  'color',
+  'filter',
+  'helper',
+  'require',
+  'fail-fast',
+  'config',
+  'reporter',
+  'verbose',
+]);
+
+const cliFlags = parseArgs(process.argv.slice(2));
+const jasmineFlags = [];
+const extraFlags = [];
+for (const [name, value] of Object.entries(cliFlags)) {
+  const normalizedValues = Array.isArray(value) ? value : [value];
+  if (name === '_') {
+    jasmineFlags.push(...value);
+  } else if (supportedJasmineFlags.has(name)) {
+    for (const normalizedValue of normalizedValues) {
+      jasmineFlags.push(`--${name}${typeof normalizedValue === 'boolean' ? '' : `=${normalizedValue}`}`);
+    }
+  } else {
+    for (const normalizedValue of normalizedValues) {
+      extraFlags.push(`--${name}${typeof normalizedValue === 'boolean' ? '' : `=${normalizedValue}`}`);
+    }
+  }
+}
+
+const flagName = (flag) => {
+  if (flag.startsWith('--')) {
+    const valStart = flag.indexOf('=', 2);
+    return flag.slice(0, valStart > 0 ? valStart : flag.length);
+  }
+  return flag;
+}
+const flagSorter = (a, b) => {
+  const aFlagName = flagName(a);
+  const bFlagName = flagName(b);
+  const aIndex = process.argv.findIndex((arg) => arg === aFlagName || arg.startsWith(`${aFlagName}=`));
+  const bIndex = process.argv.findIndex((arg) => arg === bFlagName || arg.startsWith(`${bFlagName}=`));
+  return aIndex - bIndex;
+};
+jasmineFlags.sort(flagSorter);
+extraFlags.sort(flagSorter);
+if (extraFlags.length > 0) {
+  jasmineFlags.push('--', ...extraFlags);
+}
+
+const jasmineProcess = spawn(
+    'jasmine',
+    jasmineFlags,
+    {
+      stdio: 'inherit',
+    },
+);
+
+jasmineProcess.on('close', (exitCode) => {
+  process.exitCode = exitCode;
+});
diff --git a/packages/google-closure-compiler/test/support/jasmine.sh b/packages/google-closure-compiler/test/support/jasmine.sh
new file mode 100755
index 00000000..8fec70db
--- /dev/null
+++ b/packages/google-closure-compiler/test/support/jasmine.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+# Run the test commands and fail the script if any of them failed
+EXIT_STATUS=0
+./test/support/jasmine-launcher.js "$@" || EXIT_STATUS=$?
+exit $EXIT_STATUS