Method install

www/js/ext/eventsource.esm.js:136–139

(target, source, args, runtime)

    this.stub = stub;
  }
  install(target, source, args, runtime) {
    this.runtime = runtime;
    runtime.assignToNamespace(target, this.nameSpace, this.eventSourceName, this.stub);
  }
  static parse(parser) {
    if (!parser.matchToken("eventsource")) return;
    var urlElement;