DevTools: visualize deps

third_party/WebKit/Source/devtools/scripts/visualize_deps/generate_dot.js

Index: third_party/WebKit/Source/devtools/scripts/visualize_deps/generate_dot.js
diff --git a/third_party/WebKit/Source/devtools/scripts/visualize_deps/generate_dot.js b/third_party/WebKit/Source/devtools/scripts/visualize_deps/generate_dot.js
new file mode 100644
index 0000000000000000000000000000000000000000..b079f2180d9b79e3e771e9cbae478636f24b52aa
--- /dev/null
+++ b/third_party/WebKit/Source/devtools/scripts/visualize_deps/generate_dot.js
@@ -0,0 +1,38 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+"use strict";
+
+const fs = require('fs');
+const path = require('path');
+
+const utils = require('../utils');
+
+const FRONTEND_PATH = path.resolve(__dirname, '..', '..', 'front_end');
+const OUT = path.resolve(__dirname, 'out', 'dependencies.dot');
+
+function main() {
+  const modules = new Set();
+  const moduleToDependencyList = ['digraph dependencies {'];
+  fs.readdirSync(FRONTEND_PATH).forEach(function(file) {
+    const moduleJSONPath = path.join(FRONTEND_PATH, file, 'module.json');
+    if (fs.statSync(path.join(FRONTEND_PATH, file)).isDirectory() &&
+      utils.isFile(moduleJSONPath)) {
+      const module = file;
+      modules.add(module);
+      const moduleJSON = require(moduleJSONPath);
+      if (moduleJSON.dependencies) {
+        for (let d of moduleJSON.dependencies) {
+          moduleToDependencyList.push(`  ${module} -> ${d}`);
+        }
+      }
+    }
+  });
+  moduleToDependencyList.push('}');
+  const content = moduleToDependencyList.join('\n');
+  fs.writeFileSync(OUT, content);
+}
+
+if (require.main === module)
+  main();