| argument-number.js |
---
esid: sec-temporal.plainyearmonth.from
description: A number is invalid in place of an ISO string for Temporal.PlainYearMonth
features: [Temporal]
--- |
724 |
| argument-object.js |
---
esid: sec-temporal.plainyearmonth.from
description: An object argument
includes: [temporalHelpers.js]
features: [Temporal]
--- |
2163 |
| argument-plaindate.js |
---
esid: sec-temporal.plainyearmonth.from
description: A PlainYearMonth argument is cloned
includes: [temporalHelpers.js]
features: [Temporal]
--- |
882 |
| argument-plainyearmonth.js |
---
esid: sec-temporal.plainyearmonth.from
description: A PlainYearMonth object is copied, not returned directly
includes: [temporalHelpers.js]
features: [Temporal]
--- |
992 |
| argument-propertybag-calendar-case-insensitive.js |
---
esid: sec-temporal.plainyearmonth.from
description: The calendar name is case-insensitive
includes: [temporalHelpers.js]
features: [Temporal]
--- |
850 |
| argument-propertybag-calendar-iso-string.js |
---
esid: sec-temporal.plainyearmonth.from
description: An ISO 8601 string can be converted to a calendar ID in Calendar
includes: [temporalHelpers.js]
features: [Temporal]
--- |
1043 |
| argument-propertybag-calendar-leap-second.js |
---
esid: sec-temporal.plainyearmonth.from
description: Leap second is a valid ISO string for a calendar in a property bag
includes: [temporalHelpers.js]
features: [Temporal]
--- |
774 |
| argument-propertybag-calendar-number.js |
---
esid: sec-temporal.plainyearmonth.from
description: A number as calendar in a property bag is not accepted
features: [Temporal]
--- |
749 |
| argument-propertybag-calendar-string.js |
---
esid: sec-temporal.plainyearmonth.from
description: A calendar ID is valid input for Calendar
includes: [temporalHelpers.js]
features: [Temporal]
--- |
803 |
| argument-propertybag-calendar-wrong-type.js |
---
esid: sec-temporal.plainyearmonth.from
description: >
Appropriate error thrown when a calendar property from a property bag cannot
be converted to a calendar ID
features: [BigInt, Symbol, Temporal]
--- |
1412 |
| argument-propertybag-calendar-year-zero.js |
---
esid: sec-temporal.plainyearmonth.from
description: Negative zero, as an extended year, is rejected
features: [Temporal, arrow-function]
--- |
866 |
| argument-string-calendar-annotation-invalid-key.js |
---
esid: sec-temporal.plainyearmonth.from
description: Annotation keys are lowercase-only
features: [Temporal]
--- |
876 |
| argument-string-calendar-annotation.js |
---
esid: sec-temporal.plainyearmonth.from
description: Various forms of calendar annotation; critical flag has no effect
features: [Temporal]
includes: [temporalHelpers.js]
--- |
1079 |
| argument-string-critical-unknown-annotation.js |
---
esid: sec-temporal.plainyearmonth.from
description: Unknown annotations with critical flag are rejected
features: [Temporal]
--- |
908 |
| argument-string-date-with-utc-offset.js |
---
esid: sec-temporal.plainyearmonth.from
description: UTC offset not valid with format that does not include a time
features: [Temporal]
includes: [temporalHelpers.js]
--- |
1483 |
| argument-string-invalid.js |
---
esid: sec-temporal.plainyearmonth.from
description: An invalid ISO string is never supported
includes: [temporalHelpers.js]
features: [Temporal]
--- |
752 |
| argument-string-limits.js |
---
esid: sec-temporal.plainyearmonth.from
description: ISO strings at the edges of the representable range
features: [Temporal]
--- |
1030 |
| argument-string-minus-sign.js |
---
esid: sec-temporal.plainyearmonth.from
description: Non-ASCII minus sign is not acceptable
features: [Temporal]
--- |
706 |
| argument-string-multiple-calendar.js |
---
esid: sec-temporal.plainyearmonth.from
description: >
More than one calendar annotation is not syntactical if any have the criical
flag
features: [Temporal]
--- |
1130 |
| argument-string-multiple-time-zone.js |
---
esid: sec-temporal.plainyearmonth.from
description: More than one time zone annotation is not syntactical
features: [Temporal]
--- |
854 |
| argument-string-time-separators.js |
---
esid: sec-temporal.plainyearmonth.from
description: Time separator in string argument can vary
features: [Temporal]
includes: [temporalHelpers.js]
--- |
858 |
| argument-string-time-zone-annotation.js |
---
esid: sec-temporal.plainyearmonth.from
description: Various forms of time zone annotation; critical flag has no effect
features: [Temporal]
includes: [temporalHelpers.js]
--- |
1268 |
| argument-string-trailing-junk.js |
---
esid: sec-temporal.plainyearmonth.from
description: RangeError thrown if a string with trailing junk is used as a PlainYearMonth
features: [Temporal]
--- |
564 |
| argument-string-unknown-annotation.js |
---
esid: sec-temporal.plainyearmonth.from
description: Various forms of unknown annotation
features: [Temporal]
includes: [temporalHelpers.js]
--- |
1062 |
| argument-string-with-utc-designator.js |
---
esid: sec-temporal.plainyearmonth.from
description: RangeError thrown if a string with UTC designator is used as a PlainYearMonth
features: [Temporal, arrow-function]
--- |
782 |
| argument-string.js |
---
esid: sec-temporal.plainyearmonth.from
description: A string is parsed into the correct object when passed as the argument
includes: [temporalHelpers.js]
features: [Temporal]
--- |
1382 |
| argument-wrong-type.js |
---
esid: sec-temporal.plainyearmonth.from
description: >
Appropriate error thrown when argument cannot be converted to a valid string
or property bag for PlainYearMonth
features: [BigInt, Symbol, Temporal]
--- |
1402 |
| basic.js |
---
esid: sec-temporal.plainyearmonth.from
description: Returns correctly with valid data
includes: [temporalHelpers.js]
features: [Temporal]
--- |
1950 |
| browser.js |
|
0 |
| builtin.js |
---
esid: sec-temporal.plainyearmonth.from
description: Tests that Temporal.PlainYearMonth.from meets the requirements for built-in objects
info: |
Built-in functions that are not constructors do not have a "prototype" property unless
otherwise specified in the description of a particular function.
Unless specified otherwise, a built-in object that is callable as a function is a built-in
function object with the characteristics described in 10.3. Unless specified otherwise, the
[[Extensible]] internal slot of a built-in object initially has the value true.
Unless otherwise specified every built-in function and every built-in constructor has the
Function prototype object [...] as the value of its [[Prototype]] internal slot.
features: [Temporal]
--- |
1582 |
| calendar-temporal-object.js |
---
esid: sec-temporal.plainyearmonth.from
description: Fast path for converting other Temporal objects to Temporal.Calendar by reading internal slots
info: |
sec-temporal.plainyearmonth.from step 3:
3. Return ? ToTemporalYearMonth(_item_, _options_).
sec-temporal-totemporaldate step 2.b:
b. Let _calendar_ be ? GetTemporalCalendarWithISODefault(_item_).
sec-temporal-gettemporalcalendarwithisodefault step 2:
2. Return ? ToTemporalCalendarWithISODefault(_calendar_).
sec-temporal-totemporalcalendarwithisodefault step 2:
3. Return ? ToTemporalCalendar(_temporalCalendarLike_).
sec-temporal-totemporalcalendar step 1.a:
a. If _temporalCalendarLike_ has an [[InitializedTemporalDate]], [[InitializedTemporalDateTime]], [[InitializedTemporalMonthDay]], [[InitializedTemporalYearMonth]], or [[InitializedTemporalZonedDateTime]] internal slot, then
i. Return _temporalCalendarLike_.[[Calendar]].
includes: [compareArray.js, temporalHelpers.js]
features: [Temporal]
--- |
1614 |
| fields-missing-properties.js |
---
esid: sec-temporal.plainyearmonth.from
description: Throws TypeError with incorrect input data type
features: [Temporal]
--- |
797 |
| infinity-throws-rangeerror.js |
---
description: Throws if any value in the property bag is Infinity or -Infinity
esid: sec-temporal.plainyearmonth.from
includes: [compareArray.js, temporalHelpers.js]
features: [Temporal]
--- |
1218 |
| leap-second.js |
---
esid: sec-temporal.plainyearmonth.from
description: Leap second is a valid ISO string for PlainYearMonth
includes: [temporalHelpers.js]
features: [Temporal]
--- |
1406 |
| length.js |
---
esid: sec-temporal.plainyearmonth.from
description: Temporal.PlainYearMonth.from.length is 1
info: |
Every built-in function object, including constructors, has a "length" property whose value is
an integer. Unless otherwise specified, this value is equal to the largest number of named
arguments shown in the subclause headings for the function description. Optional parameters
(which are indicated with brackets: [ ]) or rest parameters (which are shown using the form
«...name») are not included in the default argument count.
Unless otherwise specified, the "length" property of a built-in function object has the
attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: true }.
includes: [propertyHelper.js]
features: [Temporal]
--- |
1254 |
| limits.js |
---
esid: sec-temporal.plainyearmonth.from
description: PlainYearMonth.from enforces the supported range
includes: [temporalHelpers.js]
features: [Temporal]
--- |
1292 |
| missing-properties.js |
---
esid: sec-temporal.plainyearmonth.from
description: Errors due to missing properties on fields object are thrown in the correct order
features: [Temporal]
--- |
1037 |
| monthcode-invalid.js |
---
esid: sec-temporal.plainyearmonth.from
description: Throw RangeError for an out-of-range, conflicting, or ill-formed monthCode
features: [Temporal]
--- |
1441 |
| name.js |
---
esid: sec-temporal.plainyearmonth.from
description: Temporal.PlainYearMonth.from.name is "from".
info: |
Every built-in function object, including constructors, that is not identified as an anonymous
function has a "name" property whose value is a String. Unless otherwise specified, this value
is the name that is given to the function in this specification.
Unless otherwise specified, the "name" property of a built-in function object, if it exists,
has the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: true }.
includes: [propertyHelper.js]
features: [Temporal]
--- |
1090 |
| not-a-constructor.js |
---
esid: sec-temporal.plainyearmonth.from
description: Temporal.PlainYearMonth.from does not implement [[Construct]], is not new-able
info: |
Built-in function objects that are not identified as constructors do not implement the
[[Construct]] internal method unless otherwise specified in the description of a particular
function.
includes: [isConstructor.js]
features: [Reflect.construct, Temporal]
--- |
966 |
| observable-get-overflow-argument-primitive.js |
---
esid: sec-temporal.plainyearmonth.from
description: overflow property is extracted with string argument.
includes: [compareArray.js, temporalHelpers.js]
features: [Temporal]
--- |
1333 |
| observable-get-overflow-argument-string-invalid.js |
---
esid: sec-temporal.plainyearmonth.from
description: overflow property is not extracted with ISO-invalid string argument.
includes: [compareArray.js, temporalHelpers.js]
features: [Temporal]
--- |
796 |
| one-of-era-erayear-undefined.js |
---
esid: sec-temporal.plainyearmonth.from
description: Does not throw a RangeError if only one of era/eraYear fields is present
features: [Temporal]
includes: [temporalHelpers.js]
--- |
813 |
| options-invalid.js |
---
esid: sec-temporal.plainyearmonth.from
description: TypeError thrown when a primitive is passed as the options argument
features: [Temporal]
--- |
795 |
| options-object.js |
---
esid: sec-temporal.plainyearmonth.prototype.from
description: Empty object may be used as options
includes: [temporalHelpers.js]
features: [Temporal]
--- |
832 |
| options-undefined.js |
---
esid: sec-temporal.plainyearmonth.from
description: Verify that undefined options are handled correctly.
features: [Temporal]
--- |
769 |
| options-wrong-type.js |
---
esid: sec-temporal.plainyearmonth.from
description: TypeError thrown when options argument is a primitive
features: [BigInt, Symbol, Temporal]
--- |
1081 |
| order-of-operations.js |
---
esid: sec-temporal.plainyearmonth.from
description: Properties on an object passed to from() are accessed in the correct order
includes: [compareArray.js, temporalHelpers.js]
features: [Temporal]
--- |
1927 |
| overflow-constrain.js |
---
esid: sec-temporal.plainyearmonth.from
description: Reject value for overflow option
includes: [temporalHelpers.js]
features: [Temporal]
--- |
5797 |
| overflow-invalid-string.js |
---
esid: sec-temporal.plainyearmonth.from
description: RangeError thrown when overflow option not one of the allowed string values
info: |
sec-getoption step 10:
10. If _values_ is not *undefined* and _values_ does not contain an element equal to _value_, throw a *RangeError* exception.
sec-temporal-totemporaloverflow step 1:
1. Return ? GetOption(_normalizedOptions_, *"overflow"*, « String », « *"constrain"*, *"reject"* », *"constrain"*).
sec-temporal-totemporalyearmonth steps 2–3:
2. If Type(_item_) is Object, then
...
e. Return ? YearMonthFromFields(_calendar_, _fields_, _options_).
3. Perform ? ToTemporalOverflow(_options_).
sec-temporal.plainyearmonth.from steps 2–3:
2. If Type(_item_) is Object and _item_ has an [[InitializedTemporalYearMonth]] internal slot, then
a. Perform ? ToTemporalOverflow(_options_).
b. Return ...
3. Return ? ToTemporalYearMonth(_item_, _options_).
features: [Temporal]
--- |
1771 |
| overflow-reject.js |
---
esid: sec-temporal.plainyearmonth.from
description: Reject value for overflow option
features: [Temporal]
--- |
816 |
| overflow-undefined.js |
---
esid: sec-temporal.plainyearmonth.from
description: Fallback value for overflow option
info: |
sec-getoption step 3:
3. If _value_ is *undefined*, return _fallback_.
sec-temporal-totemporaloverflow step 1:
1. Return ? GetOption(_normalizedOptions_, *"overflow"*, « String », « *"constrain"*, *"reject"* », *"constrain"*).
sec-temporal-totemporalyearmonth steps 2–3:
2. If Type(_item_) is Object, then
...
e. Return ? YearMonthFromFields(_calendar_, _fields_, _options_).
3. Perform ? ToTemporalOverflow(_options_).
sec-temporal.plainyearmonth.from steps 2–3:
2. If Type(_item_) is Object and _item_ has an [[InitializedTemporalYearMonth]] internal slot, then
a. Perform ? ToTemporalOverflow(_options_).
b. Return ...
3. Return ? ToTemporalYearMonth(_item_, _options_).
includes: [temporalHelpers.js]
features: [Temporal]
--- |
2391 |
| overflow-wrong-type.js |
---
esid: sec-temporal.plainyearmonth.from
description: Type conversions for overflow option
info: |
sec-getoption step 9.a:
a. Set _value_ to ? ToString(_value_).
sec-temporal-totemporaloverflow step 1:
1. Return ? GetOption(_normalizedOptions_, *"overflow"*, « String », « *"constrain"*, *"reject"* », *"constrain"*).
sec-temporal-totemporalyearmonth steps 2–3:
2. If Type(_item_) is Object, then
...
e. Return ? YearMonthFromFields(_calendar_, _fields_, _options_).
3. Perform ? ToTemporalOverflow(_options_).
sec-temporal.plainyearmonth.from steps 2–3:
2. If Type(_item_) is Object and _item_ has an [[InitializedTemporalYearMonth]] internal slot, then
a. Perform ? ToTemporalOverflow(_options_).
b. Return ...
3. Return ? ToTemporalYearMonth(_item_, _options_).
includes: [compareArray.js, temporalHelpers.js]
features: [Temporal]
--- |
1626 |
| prop-desc.js |
---
esid: sec-temporal.plainyearmonth.from
description: The "from" property of Temporal.PlainYearMonth
includes: [propertyHelper.js]
features: [Temporal]
--- |
723 |
| reference-day.js |
---
esid: sec-temporal.plainyearmonth.from
description: Reference ISO day is chosen to be the first of the calendar month
info: |
6.d. Perform ! CreateDataPropertyOrThrow(_fields_, *"day"*, *1*<sub>𝔽</sub>).
e. Let _result_ be ? CalendarDateToISO(_calendar_.[[Identifier]], _fields_, _options_).
includes: [temporalHelpers.js]
features: [Temporal]
--- |
1638 |
| shell.js |
---
description: |
Test if a given function is a constructor function.
defines: [isConstructor]
features: [Reflect.construct]
--- |
596 |
| subclassing-ignored.js |
---
esid: sec-temporal.plainyearmonth.from
description: The receiver is never called when calling from()
includes: [temporalHelpers.js]
features: [Temporal]
--- |
667 |
| year-zero.js |
---
esid: sec-temporal.plainyearmonth.from
description: Negative zero, as an extended year, is rejected
features: [Temporal, arrow-function]
--- |
800 |