1839676 - [meta] Improve error messages for Temporal

Status: NEW

(Core :: JavaScript: Standard Library, task, P3)

Description

[André Bargull [:anba]]

Improve the error messages for Temporal. For example when parsing fails in TemporalParser, the error message could include (parts of) the input string to give better feedback which part couldn't be parsed:

js> Temporal.Instant.from("2023-01-01T00:00[UTC]")
typein:1:18 RangeError: missing time zone
Stack:
  @typein:1:18
js> Temporal.Instant.from("2023-01-01T00:00Z[UTC]").toString()
"2023-01-01T00:00:00Z"

Just reporting "RangeError: missing time zone" isn't helpful, in this specific case the error message could indicate that either a time zone offset or Z must be present before the time zone annotation.

Error message improvements should happen in individual bugs that block this bug.