webpack
diff --git a/‎lib/debug/ProfilingPlugin.js
Lines changed: 9 additions & 7 deletions b/‎lib/debug/ProfilingPlugin.js
Lines changed: 9 additions & 7 deletions
diff --git a/‎test/ProfilingPlugin.test.js
Lines changed: 4 additions & 1 deletion b/‎test/ProfilingPlugin.test.js
Lines changed: 4 additions & 1 deletion
@@ -203,15 +203,17 @@ class ProfilingPlugin {
 
 		// Compiler Hooks
 		Object.keys(compiler.hooks).forEach(hookName => {
-			compiler.hooks[hookName].intercept(
-				makeInterceptorFor("Compiler", tracer)(hookName)
-			);
+			const hook = compiler.hooks[hookName];
+			if (hook) {
+				hook.intercept(makeInterceptorFor("Compiler", tracer)(hookName));
+			}
 		});
 
 		Object.keys(compiler.resolverFactory.hooks).forEach(hookName => {
-			compiler.resolverFactory.hooks[hookName].intercept(
-				makeInterceptorFor("Resolver", tracer)(hookName)
-			);
+			const hook = compiler.resolverFactory.hooks[hookName];
+			if (hook) {
+				hook.intercept(makeInterceptorFor("Resolver", tracer)(hookName));
+			}
 		});
 
 		compiler.hooks.compilation.tap(
@@ -303,7 +305,7 @@ const interceptAllHooksFor = (instance, tracer, logLabel) => {
 	if (Reflect.has(instance, "hooks")) {
 		Object.keys(instance.hooks).forEach(hookName => {
 			const hook = instance.hooks[hookName];
-			if (!hook._fakeHook) {
+			if (hook && !hook._fakeHook) {
 				hook.intercept(makeInterceptorFor(logLabel, tracer)(hookName));
 			}
 		});
 
@@ -25,7 +25,10 @@ describe("Profiling Plugin", function () {
 					new webpack.debug.ProfilingPlugin({
 						outputPath: finalPath
 					})
-				]
+				],
+				experiments: {
+					backCompat: false
+				}
 			});
 			compiler.run(err => {
 				if (err) return done(err);