Importing Chai in Typescript

Question

I'm trying to use chai in typescript.

Chai's javascript example shows this as:

var should = require('chai').should();

I downloaded the type definition:

tsd install chai

...referenced the file, tried to import

/// <reference path='../typings/chai/chai.d.ts' />
import should = require('chai').should();

I get:

error TS1005: ';' expected

...any idea how to do this?