Method update

src/llhttp/http.ts:1201–1209

(field: string, value: number, next?: string | Node)

  }

  private update(field: string, value: number, next?: string | Node): Node {
    const p = this.llparse;

    const res = p.invoke(p.code.update(field, value));
    if (next !== undefined) {
      res.otherwise(this.node(next));
    }
    return res;
  }

  private resetHeaderState(next: string | Node): Node {
    return this.update('header_state', HEADER_STATE.GENERAL, next);