Method shift

github-actions/browserstack/set-browserstack-env.js:8341–8348

()

          return nextItem;
        }
      };
      module.exports = class FixedQueue {
        constructor() {
          this.head = this.tail = new FixedCircularBuffer();
        }
        isEmpty() {
          return this.head.isEmpty();
        }
        push(data) {
          if (this.head.isFull()) {
            this.head = this.head.next = new FixedCircularBuffer();