feat(ts): include user defined routes from *_routes.ts files

In order to include custom routes:
- create a file <name>_routes.ts
- export a function "register" that accepts 2 arguments (express router and MySQL connection pool)

Part of #27

examples/ts/express/mysql/app.ts

@@ -2,6 +2,7 @@ import express from 'express'
 import mysql from 'mysql'
 
 const routes = require('./routes')
+const custom_routes = require('./custom_routes')
 
 const app = express()
 app.use(express.json())
@@ -34,6 +35,7 @@ const pool = mysql.createPool({
 })
 
 routes.register(app, pool)
+custom_routes.register(app, pool)
 
 const port = process.env.PORT || 3000
 app.listen(port, () => {

examples/ts/express/mysql/custom_routes.ts

@@ -0,0 +1,10 @@
+import { Express, NextFunction, Request, Response } from 'express'
+import { Pool } from 'mysql'
+
+exports.register = (app: Express, pool: Pool) => {
+
+    app.get('/custom/route', (req: Request, res: Response, next: NextFunction) => {
+        res.json({ "custom": true })
+    })
+
+}

src/templates/app.ts.ejs

@@ -1,7 +1,18 @@
+<%
+// "custom_routes.ts" => "custom_routes"
+function removeExtension(filename) {
+    return filename.replace(/\.ts$/, '')
+}
+-%>
 import express from 'express'
 import mysql from 'mysql'
 
 const routes = require('./routes')
+<% customRouteFilenames.forEach(filename => {
+    const routerName = removeExtension(filename)
+-%>
+const <%- routerName %> = require('./<%- routerName %>')
+<% }) -%>
 
 const app = express()
 app.use(express.json())
@@ -36,6 +47,11 @@ const pool = mysql.createPool({
 })
 
 routes.register(app, pool)
+<% customRouteFilenames.forEach(filename => {
+    const routerName = removeExtension(filename)
+-%>
+<%- routerName %>.register(app, pool)
+<% }) -%>
 
 const port = process.env.PORT || 3000
 app.listen(port, () => {