Fixed Profiling Output path for creating a folder, if it doesn't exists.

Author: NaviMarella

lib/debug/ProfilingPlugin.js

@@ -1,4 +1,5 @@
 const fs = require("fs");
+const path = require("path");
 const { Tracer } = require("chrome-trace-event");
 const validateOptions = require("schema-utils");
 const schema = require("../../schemas/plugins/debug/ProfilingPlugin.json");
@@ -86,13 +87,18 @@ class Profiler {
 
 /**
  * @param {string} outputPath The ___location where to write the log.
+ * @param {Object} compiler Current compiler Instance
  * @returns {Trace} The trace object
  */
-const createTrace = outputPath => {
+const createTrace = (outputPath, compiler) => {
 	const trace = new Tracer({
 		noStream: true
 	});
 	const profiler = new Profiler(inspector);
+	if (outputPath.match(/\/|\\/)) {
+		const dir = path.dirname(outputPath);
+		compiler.outputFileSystem.mkdirp(dir);
+	}
 	const fsStream = fs.createWriteStream(outputPath);
 
 	let counter = 0;
@@ -158,7 +164,7 @@ class ProfilingPlugin {
 	}
 
 	apply(compiler) {
-		const tracer = createTrace(this.outputPath);
+		const tracer = createTrace(this.outputPath, compiler);
 		tracer.profiler.startProfiling();
 
 		// Compiler Hooks

test/ProfilingPlugin.unittest.js

@@ -1,6 +1,9 @@
 "use strict";
 
 const ProfilingPlugin = require("../lib/debug/ProfilingPlugin");
+const path = require("path");
+const fs = require("fs");
+const webpack = require("../");
 
 describe("Profiling Plugin", () => {
 	it("should persist the passed outpath", () => {
@@ -15,6 +18,26 @@ describe("Profiling Plugin", () => {
 		expect(plugin.outputPath).toBe("events.json");
 	});
 
+	it("should handle outpath with folder", done => {
+		const finalPath = "test/fixtures/profilingPath/events.json";
+		const compiler = webpack({
+			context: "/",
+			entry: "./fixtures/a.js",
+			plugins: [
+				new webpack.debug.ProfilingPlugin({
+					outputPath: finalPath
+				})
+			]
+		});
+		const outputPath = path.join(__dirname, "/fixtures/profilingPath");
+		compiler.run(err => {
+			if (err) return done(err);
+			if (!fs.existsSync(outputPath))
+				return done(new Error("Folder should be created."));
+			done();
+		});
+	});
+
 	it("should handle when unable to require the inspector", () => {
 		const profiler = new ProfilingPlugin.Profiler();
 		return profiler.startProfiling();