/*~ On this line, import the module which this module adds to */
import * as m from "someModule";

/*~ You can also import other modules if needed */
import * as other from "anotherModule";

/*~ Here, declare the same module as the one you imported above */
declare module "someModule" {
  /*~ Inside, add new function, classes, or variables. You can use
   *~ unexported types from the original module if needed. */
  export function theNewMethod(x: m.foo): other.bar;

  /*~ You can also add new properties to existing interfaces from
   *~ the original module by writing interface augmentations */
  export interface SomeModuleOptions {
    someModuleSetting?: string;
  }

  /*~ New types can also be declared and will appear as if they
   *~ are in the original module */
  export interface MyModulePluginOptions {
    size: number;
  }
}