1 files changed, 48 insertions, 0 deletions
diff --git a/node_modules/workbox-routing/utils/normalizeHandler.mjs b/node_modules/workbox-routing/utils/normalizeHandler.mjs
new file mode 100644
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--- /dev/null
+++ b/node_modules/workbox-routing/utils/normalizeHandler.mjs
@@ -0,0 +1,48 @@
+/*
+ Copyright 2017 Google Inc. All Rights Reserved.
+ 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.
+*/
+
+import {assert} from 'workbox-core/_private/assert.mjs';
+import '../_version.mjs';
+
+/**
+ * @param {function()|Object} handler Either a function, or an object with a
+ * 'handle' method.
+ * @return {Object} An object with a handle method.
+ *
+ * @private
+ */
+export default (handler) => {
+  if (handler && typeof handler === 'object') {
+    if (process.env.NODE_ENV !== 'production') {
+      assert.hasMethod(handler, 'handle', {
+        moduleName: 'workbox-routing',
+        className: 'Route',
+        funcName: 'constructor',
+        paramName: 'handler',
+      });
+    }
+    return handler;
+  } else {
+    if (process.env.NODE_ENV !== 'production') {
+      assert.isType(handler, 'function', {
+        moduleName: 'workbox-routing',
+        className: 'Route',
+        funcName: 'constructor',
+        paramName: 'handler',
+      });
+    }
+    return {handle: handler};
+  }
+};