fix: do not require .js.map files in the entry points when someone is using devtool: "source-map"

Author: DimitarTachev

Diff for: plugins/GenerateNativeScriptEntryPointsPlugin.js

@@ -55,7 +55,7 @@ exports.GenerateNativeScriptEntryPointsPlugin = (function () {
                 entryChunk = chunk;
             } else {
                 chunk.files.forEach(fileName => {
-                    if (!this.isHMRFile(fileName)) {
+                    if (!this.isHMRFile(fileName) && this.isSourceFile(fileName)) {
                         requiredFiles.push(fileName);
                     }
                 });
@@ -96,5 +96,9 @@ exports.GenerateNativeScriptEntryPointsPlugin = (function () {
         return fileName.indexOf("hot-update") > -1;
     }
 
+    GenerateNativeScriptEntryPointsPlugin.prototype.isSourceFile = function (fileName) {
+        return fileName.endsWith(".js");
+    }
+
     return GenerateNativeScriptEntryPointsPlugin;
 })();