Need formatRange and formatRangeToParts

[FrankYFTang]

I know this proposal is already stage 3 but I think the following features should be considred, maybe for a v2 version

To support formatting range of duration by adding

• Intl.DurationFormat.prototype.formatRange
• Intl.DurationFormat.prototype.formatRangeToParts

Here are some real use case

• Use Case 1
  Time to complete this task: "56 minutes to 2 hours 3 minutes" in a Project Management software

• Use Case 2
  Estimate wait to be served "40 seconds to 10 minutes 20 seconds" in the TechSupport queue

• Use Case 3
  Fly Status Tracking software
  "UA945 delay time in the last 3 weeks: 4 minutes to 1 hour and 18 minutes"

• Use Case 4
  Map software for direction
  "Time to walk from San Jose to San Francisco: 4 hours and 35 minutes to 6 hours and 10 minutes"

• Use Case 5
  Restaurant
  "Wait time for 6 people to get the seat now: 15 minutes to 2 hours and 5 minutes"

@sffc @ryzokuken Not high priority imporant feature but worth of thinking for future plan.

[ryzokuken]

I was just using the UPS website this morning and thought of this! Great timing Frank. I agree that it's beyond the scope of this proposal but a good contender for DurationFormat v2. I'll post this as an issue on 402 so we can take it from there.

[FrankYFTang]

could you include some screenshot when you see one?