This makes the global / namespace types available from within the modules project. A detailed description of working with JET elements and classes in your typescript project can be found at: JET Typescript Usage. JET in Typescript. A global-modifying module alters existing values in the global scope when they are imported. To integrate TypeScript into an existing Windows Store app, you need to copy the following declaration files to a folder, for example \tslib: lib.d.ts; winjs.d.ts; winrt.d.ts A global-modifying module alters existing values in the global scope when they are imported. CodeQL library for TypeScript ... (name) is like the above, but additionally holds if the reference is wrapped in a union and/or intersection type. Because this library is loaded through a