Yarn workspaces

Summary:
1) moved "sonar/desktop/src" to "sonar/desktop/app/src", so "app" is now a separate package containing the core Flipper app code
2) Configured yarn workspaces with the root in "sonar/desktop": app, static, pkg, doctor, headless-tests. Plugins are not included for now, I plan to do this later.

Reviewed By: jknoxville

Differential Revision: D20535782

fbshipit-source-id: 600b2301960f37c7d72166e0d04eba462bec9fc1

desktop/app/src/utils/info.tsx

@@ -0,0 +1,49 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import os from 'os';
+
+export type Info = {
+  arch: string;
+  platform: string;
+  unixname: string;
+  versions: {
+    [key: string]: string | undefined;
+  };
+};
+
+/**
+ * This method builds up some metadata about the users environment that we send
+ * on bug reports, analytic events, errors etc.
+ */
+export function getInfo(): Info {
+  return {
+    arch: process.arch,
+    platform: process.platform,
+    unixname: os.userInfo().username,
+    versions: {
+      electron: process.versions.electron,
+      node: process.versions.node,
+    },
+  };
+}
+
+export function stringifyInfo(info: Info): string {
+  const lines = [
+    `Platform: ${info.platform} ${info.arch}`,
+    `Unixname: ${info.unixname}`,
+    `Versions:`,
+  ];
+
+  for (const key in info.versions) {
+    lines.push(`  ${key}: ${String(info.versions[key])}`);
+  }
+
+  return lines.join('\n');
+}