title: Will Typescript support existing projects with JavaScript libraries?
body: <p>I would like to start using TypeScript in an existing project, but there are already a number of shared JavaScript libraries that I need to use in a TypeScript file. Is there any way for TypeScript to refer to those existing JavaScript libraries with project-related code?</p>
  
  <p>I also tried porting the existing JavaScript libraries to TypeScript and I am getting a lot of compile time errors. It's tough to remove all the compile time errors. Why can't TypeScript just refer those JavaScript classes with a "suppress error and warning" option like Google Dart compiler?</p>