| // Copyright (C) 2022 Igalia, S.L. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-temporal.plainyearmonth.prototype.with |
| description: PreparePartialTemporalFields copies only defined properties of source object |
| info: | |
| 4. For each value _property_ of _fieldNames_, do |
| a. Let _value_ be ? Get(_fields_, _property_). |
| b. If _value_ is not *undefined*, then |
| ... |
| iii. Perform ! CreateDataPropertyOrThrow(_result_, _property_, _value_). |
| includes: [temporalHelpers.js] |
| features: [Temporal] |
| ---*/ |
| |
| const plainYearMonth = new Temporal.PlainYearMonth(2001, 9); |
| |
| TemporalHelpers.assertPlainYearMonth(plainYearMonth.with({ month: 11, year: undefined }), |
| 2001, 11, "M11", |
| "only the properties that are present and defined in the plain object are copied" |
| ); |
