Function defineOperation

lib/internal/util.js:599–607

(target, name, method)

// https://heycam.github.io/webidl/#define-the-operations
function defineOperation(target, name, method) {
  ObjectDefineProperty(target, name, {
    __proto__: null,
    writable: true,
    enumerable: true,
    configurable: true,
    value: method,
  });
}

// https://heycam.github.io/webidl/#es-interfaces
function exposeInterface(target, name, interfaceObject) {