Method check

deps/v8/test/js-perf-test/ClassFields/classes.js:26–30

()

    a = i+5;

    check() {
      return this.x + 1 === this.y && this.y + 1 === this.z &&
            this.z + 1 === this.q && this.q + 1 === this.r &&
            this.r + 1 === this.a;
    }
  };
}