text: // Copyright (C) 2021 Igalia, S.L. All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  
  /*---
  esid: sec-get-temporal.plainyearmonth.prototype.year
  description: Getter throws if the calendar returns ±∞ from its year method
  features: [Temporal]
  ---*/
  
  class InfinityCalendar extends Temporal.Calendar {
    constructor(positive) {
      super("iso8601");
      this.positive = positive;
    }
  
    year() {
      return this.positive ? Infinity : -Infinity;
    }
  }
  
  const pos = new InfinityCalendar(true);
  const instance1 = new Temporal.PlainYearMonth(2000, 5, pos);
  assert.throws(RangeError, () => instance1.year);
  
  const neg = new InfinityCalendar(false);
  const instance2 = new Temporal.PlainYearMonth(2000, 5, neg);
  assert.throws(RangeError, () => instance2.year);
  