chore(plugins.ts): added if-stmt for native plugins

Added if stmt for not doing anything when native plugins comes-in
Also Changed the test

Author: anikethsaha

packages/generators/__tests__/add-generator.test.ts

@@ -8,7 +8,7 @@ describe("generatePluginName", () => {
 
 	it("should return webpack Standard Plugin Name for Name : webpack.DefinePlugin", () => {
 		const pluginName = generatePluginName("webpack.DefinePlugin");
-		expect(pluginName).toEqual("Webpack.DefinePlugin");
+		expect(pluginName).toEqual("webpack.DefinePlugin");
 	});
 });
 

packages/generators/utils/plugins.ts

@@ -43,8 +43,11 @@ export const replaceAt = (str: string, index: number, replace: string) : string
 export const generatePluginName = (rawPluginName: string): string => {
 	let myPluginNameArray : string[];
 	myPluginNameArray = rawPluginName.split("-");
-	for (let i = 0; i < myPluginNameArray.length; i++) {
-		myPluginNameArray[i] = replaceAt(myPluginNameArray[i], 0, myPluginNameArray[i].charAt(0).toUpperCase());
+	if( myPluginNameArray.length <= 1 ){}
+	else{
+		for (let i = 0; i < myPluginNameArray.length; i++) {
+			myPluginNameArray[i] = replaceAt(myPluginNameArray[i], 0, myPluginNameArray[i].charAt(0).toUpperCase());
+		}
 	}
 	return myPluginNameArray.join("")
 }