Express js 4.0 is released now and my express 3-app is not working after updating because app.configure() was removed in the new version.

My Express 3-config looks like this:

// all environments
app.configure(function()
{
    app.use(express.static(__dirname + '/public'));
    // ...
});

// NODE_ENV=development only
app.configure('development', function()
{
    app.use(express.errorHandler({ dumpExceptions: true, showStack: true }));
    // ...
});

// NODE_ENV=production only
app.configure('production', function()
{
    app.use(express.errorHandler());
    // ...
});

My Question: What is the best practice for configuring an express 4 app depending on the NODE_ENV environment variable?

Express js 4.0 is released now and my express 3-app is not working after updating because app.configure() was removed in the new version.

My Express 3-config looks like this:

// all environments
app.configure(function()
{
    app.use(express.static(__dirname + '/public'));
    // ...
});

// NODE_ENV=development only
app.configure('development', function()
{
    app.use(express.errorHandler({ dumpExceptions: true, showStack: true }));
    // ...
});

// NODE_ENV=production only
app.configure('production', function()
{
    app.use(express.errorHandler());
    // ...
});

My Question: What is the best practice for configuring an express 4 app depending on the NODE_ENV environment variable?

• javascript
• node.js
• express

1 Answer 1

I suggest if you are making this conversion, you read through the 3.x to 4.x conversion guide.

Specifically:

app.configure('development', function() {
   // configure stuff here
});
// becomes
var env = process.env.NODE_ENV || 'development';
if ('development' == env) {
   // configure stuff here
}