chapter 03: creating a extension manager factory that allows to set the extension manager to return before execute it, the default manager it returns is fileExtensionManager

Author: devcorpio

chapter_03-using-stubs-to-break-dependencies/LogAn/extensionManager.js

@@ -0,0 +1,24 @@
+const fileExtensionManagerFactory = require('./fileExtensionManager');
+
+function extensionManager() {
+    let customManager = null;
+
+    function create() {
+        if (customManager !== null) {
+            return customManager;
+        }
+
+        return fileExtensionManagerFactory();
+    }
+
+    function setManager(manager) {
+        customManager = manager;
+    }
+
+    return {
+        create,
+        setManager,
+    };
+}
+
+module.exports = extensionManager;

chapter_03-using-stubs-to-break-dependencies/LogAn/fakeExtensionManager.js

@@ -4,6 +4,9 @@ function fakeExtensionManager() {
      */
     let valid = false;
 
+    /**
+     * @param {boolean} value
+     */
     function willBeValid(value) {
         valid = value;
     }