Question

I’m trying to import the code inside this file in my TypeScript app:

http://typescript.codeplex.com/SourceControl/changeset/view/fe3bc0bfce1f#samples%2fimageboard%2fmongodb.ts

However, when I try to compile this file, there is no output js file generated nor do I get any warnings.

Ideas?

Answer 1

You are compiling a declarations file which contains only types used by Typescript. Mongodb.ts is used as a a representative for the javascript code that will take care of the connection to mongodb. The intention here clearly is to use mongodb.ts as a stub in order for the compiler to be able to typecheck code that uses mongodb. In your code, you have to load mongodb.ts as an external module and then program against it. At runtime, for instance in nodejs, a different module that contains the “productive” javascript code will be loaded. As an example, you can use the following code in your app:

myapp.ts

import mongodb = module("mongodb");
var server = new mongodb.Server('localhost', 27017, {auto_reconnect: true}, {})
var db = new mongodb.Db('mydb', server);

This is taken from one of the examples at codeplex. Once again, in order to run this you need to have a runtime environment that provides an implementation of mongodb.