Mascara includes some useful interface-definition files.

These files contains definitions of types which are available in the browser. By importing these definitions, you get compile-time verification.

browserapi

defines the main objects available in the browser: window, document and so on. Note: the declarations are just for proof-of-concept, and is not yet the full API as defined by WHATWG and W3C.

htmldom

The full W3C HTMLDOM

canvasapi

The WHATWG Canvas drawing API