fix: remove addDependency and only require RefreshModuleRuntime o… (#22)

fix: remove addDependency and only require RefreshModuleRuntime once

src/loader.js

@@ -1,6 +1,10 @@
-const path = require('path');
 const { Template } = require('webpack');
 const { refreshUtils } = require('./runtime/globals');
+const RefreshModuleRuntime = require('./runtime/RefreshModuleRuntime');
+const RefreshModuleRuntimeString = Template.getFunctionContent(RefreshModuleRuntime)
+  .trim()
+  .replace(/^ {2}/gm, '')
+  .replace(/\$RefreshUtils\$/g, refreshUtils);
 
 /** A token to match code statements similar to a React import. */
 const reactModule = /['"]react['"]/;
@@ -16,21 +20,11 @@ const reactModule = /['"]react['"]/;
  * @returns {string} The injected module source code.
  */
 function RefreshHotLoader(source, inputSourceMap) {
-  // Add dependency to allow caching and invalidations
-  this.addDependency(path.resolve('./runtime/RefreshModuleRuntime'));
-
   // Use callback to allow source maps to pass through
   this.callback(
     null,
     // Only apply transform if the source code contains a React import
-    reactModule.test(source)
-      ? source +
-          '\n\n' +
-          Template.getFunctionContent(require('./runtime/RefreshModuleRuntime'))
-            .trim()
-            .replace(/^ {2}/gm, '')
-            .replace(/\$RefreshUtils\$/g, refreshUtils)
-      : source,
+    reactModule.test(source) ? source + '\n\n' + RefreshModuleRuntimeString : source,
     inputSourceMap
   );
 }