chore(js): move an exception handler in order to catch exceptions from custom routes

Part of #27
Relate to #48

Author: php-coder

examples/js/express/mysql/app.js

@@ -36,6 +36,11 @@ const pool = mysql.createPool({
 routes.register(app, pool)
 custom_routes.register(app, pool)
 
+app.use((error, req, res, next) => {
+    console.error(error)
+    res.status(500).json({ "error": "Internal Server Error" })
+})
+
 const port = process.env.PORT || 3000
 app.listen(port, () => {
     console.log(`Listen on ${port}`)

examples/js/express/mysql/custom_routes.js

@@ -4,4 +4,8 @@ exports.register = (app, pool) => {
         res.json({ "custom": true })
     })
 
+    app.get('/custom/exception', (req, res, next) => {
+        throw new Error('expected err')
+    })
+
 }

examples/js/express/mysql/routes.js

@@ -189,10 +189,6 @@ const register = (app, pool) => {
         )
     })
 
-    app.use((error, req, res, next) => {
-        console.error(error)
-        res.status(500).json({ "error": "Internal Server Error" })
-    })
 }
 
 exports.register = register

src/templates/app.js.ejs

@@ -52,6 +52,11 @@ routes.register(app, pool)
 <%- routerName %>.register(app, pool)
 <% }) -%>
 
+app.use((error, req, res, next) => {
+    console.error(error)
+    res.status(500).json({ "error": "Internal Server Error" })
+})
+
 const port = process.env.PORT || 3000
 app.listen(port, () => {
     console.log(`Listen on ${port}`)

src/templates/routes.js.ejs

@@ -86,10 +86,6 @@ endpoints.forEach(function(endpoint) {
     })
 })
 %>
-    app.use((error, req, res, next) => {
-        console.error(error)
-        res.status(500).json({ "error": "Internal Server Error" })
-    })
 }
 
 exports.register = register