path.resolve

It can take a single "to" parameter : http://nodejs.org/docs/latest/api/path.html#path_path_resolve_from_to and in fact that is *the* way you get "Absolute paths" in node

node/node.d.ts

@@ -808,6 +808,7 @@ declare module "fs" {
 declare module "path" {
     export function normalize(p: string): string;
     export function join(...paths: any[]): string;
+    export function resolve(to: string);
     export function resolve(from: string, to: string): string;
     export function resolve(from: string, from2: string, to: string): string;
     export function resolve(from: string, from2: string, from3: string, to: string): string;