It appears that the repository has undergone several changes and renamings:

backend/node_modules/any-promise/register.d.ts

@@ -1,17 +0,0 @@
-import Promise = require('./index');
-
-declare function register (module?: string, options?: register.Options): register.Register;
-
-declare namespace register {
-  export interface Register {
-    Promise: typeof Promise;
-    implementation: string;
-  }
-
-  export interface Options {
-      Promise?: typeof Promise;
-      global?: boolean
-  }
-}
-
-export = register;