Module heading comments

app/src/client.js

@@ -1,3 +1,7 @@
+/**
+ * Client-side entry point to shared frontend React App
+ *
+ */
 import BrowserRouter from 'react-router-dom/BrowserRouter';
 import React from 'react';
 import { hydrate } from 'react-dom';

app/src/index.js

@@ -1,3 +1,7 @@
+/**
+ * Load server and listen
+ *
+ */
 import app from './server';
 import http from 'http';
 

app/src/server.js

@@ -1,3 +1,9 @@
+/**
+ * Server-side Express application
+ * - API methods
+ * - entry-point to shared React App
+ *
+ */
 import React from 'react';
 import { StaticRouter } from 'react-router-dom';
 import express from 'express';

app/src/tile.js

@@ -1,3 +1,7 @@
+/**
+ * Tile-rendering helpers
+ *
+ */
 import path from 'path';
 import mapnik from 'mapnik';
 import SphericalMercator from '@mapbox/sphericalmercator';

app/src/tileserver.js

@@ -1,3 +1,7 @@
+/**
+ * Tileserver routes for Express app
+ *
+ */
 import express from 'express';
 
 import { get_bbox, render_tile } from './tile';