661     // 3. Set result to the string-concatenation of result and part.[[Value]].  in FormatDateTime()
711     // 4. For each part in parts, do  in FormatDateTimeToParts()
712     for (auto part : parts) {  in FormatDateTimeToParts()  local
713         substring.Update(JSLocale::IcuToString(thread, formattedParts, part.fBeginIndex,  in FormatDateTimeToParts()
714                                                part.fEndIndex).GetTaggedValue());  in FormatDateTimeToParts()
717         // Perform ! CreateDataPropertyOrThrow(O, "type", part.[[Type]]).  in FormatDateTimeToParts()
718         // Perform ! CreateDataPropertyOrThrow(O, "value", part.[[Value]]).  in FormatDateTimeToParts()
720         if (part.isPreExist) {  in FormatDateTimeToParts()
721             JSLocale::PutElement(thread, part.index, result, ConvertFieldIdToDateType(thread, -1),  in FormatDateTimeToParts()
724 …    JSLocale::PutElement(thread, part.index, result, ConvertFieldIdToDateType(thread, part.fField),  in FormatDateTimeToParts()
1096     for (auto part : parts) {  in ConstructFDateIntervalToJSArray()  local
1097         substring.Update(JSLocale::IcuToString(thread, formattedValue, part.fBeginIndex,  in ConstructFDateIntervalToJSArray()
1098                                                part.fEndIndex).GetTaggedValue());  in ConstructFDateIntervalToJSArray()
1101         if (part.isPreExist) {  in ConstructFDateIntervalToJSArray()
1102 …    element = JSLocale::PutElement(thread, part.index, array, ConvertFieldIdToDateType(thread, -1),  in ConstructFDateIntervalToJSArray()
1105 …element = JSLocale::PutElement(thread, part.index, array, ConvertFieldIdToDateType(thread, part.fF…  in ConstructFDateIntervalToJSArray()
1109             ToValueString(thread, TrackValue(part.fBeginIndex, part.fEndIndex, begin, end)));  in ConstructFDateIntervalToJSArray()