Method shift

deps/undici/undici.js:876–884

@returns {T|null}

()

      }
      /** @returns {T|null} */
      shift() {
        const tail = this.tail;
        const next = tail.shift();
        if (tail.isEmpty() && tail.next !== null) {
          this.tail = tail.next;
          tail.next = null;
        }
        return next;
      }
    };
  }
});