Normative: Delay validation of unit-valued options

Author: sffc

spec/instant.html

@@ -237,9 +237,9 @@ <h1>Temporal.Instant.prototype.toString ( [ _options_ ] )</h1>
         1. Let _digits_ be ? GetTemporalFractionalSecondDigitsOption(_resolvedOptions_).
         1. Let _roundingMode_ be ? GetRoundingModeOption(_resolvedOptions_, ~trunc~).
         1. Let _smallestUnit_ be ? GetTemporalUnitValuedOption(_resolvedOptions_, *"smallestUnit"*, ~unset~).
+        1. Let _timeZone_ be ? Get(_resolvedOptions_, *"timeZone"*).
         1. Perform ? ValidateTemporalUnitValue(_smallestUnit_, ~time~).
         1. If _smallestUnit_ is ~hour~, throw a *RangeError* exception.
-        1. Let _timeZone_ be ? Get(_resolvedOptions_, *"timeZone"*).
         1. If _timeZone_ is not *undefined*, then
           1. Set _timeZone_ to ? ToTemporalTimeZoneIdentifier(_timeZone_).
         1. Let _precision_ be ToSecondsStringPrecisionRecord(_smallestUnit_, _digits_).

spec/zoneddatetime.html

@@ -694,9 +694,9 @@ <h1>Temporal.ZonedDateTime.prototype.toString ( [ _options_ ] )</h1>
         1. Let _showOffset_ be ? GetTemporalShowOffsetOption(_resolvedOptions_).
         1. Let _roundingMode_ be ? GetRoundingModeOption(_resolvedOptions_, ~trunc~).
         1. Let _smallestUnit_ be ? GetTemporalUnitValuedOption(_resolvedOptions_, *"smallestUnit"*, ~unset~).
+        1. Let _showTimeZone_ be ? GetTemporalShowTimeZoneNameOption(_resolvedOptions_).
         1. Perform ? ValidateTemporalUnitValue(_smallestUnit_, ~time~).
         1. If _smallestUnit_ is ~hour~, throw a *RangeError* exception.
-        1. Let _showTimeZone_ be ? GetTemporalShowTimeZoneNameOption(_resolvedOptions_).
         1. Let _precision_ be ToSecondsStringPrecisionRecord(_smallestUnit_, _digits_).
         1. Return TemporalZonedDateTimeToString(_zonedDateTime_, _precision_.[[Precision]], _showCalendar_, _showTimeZone_, _showOffset_, _precision_.[[Increment]], _precision_.[[Unit]], _roundingMode_).
       </emu-alg>