Method isEmpty

github-actions/browserstack/set-browserstack-env.js:8332–8334

()

        }
        push(data) {
          this.list[this.top] = data;
          this.top = this.top + 1 & kMask;
        }
        shift() {
          const nextItem = this.list[this.bottom];
          if (nextItem === void 0)