Temporal: Keep Time on Your Side
summary
Proposes a replacement for JavaScript Date with five immutable types (Instant, ZonedDateTime, PlainDate/PlainTime/PlainDateTime) that separate absolute time from civil dates, enforce ISO 8601 parsing, and aim for nanosecond precision and explicit timezone handling. Demonstrates simpler, correct operations like “add one month” by choosing a civil date versus an instant, explains support for arbitrary calendars, and provides a working polyfill on npm today (API still evolving but usable for experimentation).
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chapters (8)
- 0:00Start
- 0:51Issues with Date
- 2:25Example
- 3:45Time is really hard
- 4:23Real Fact #341
- 4:44Protagonists
- 6:53TC39 temporal proposal
- 9:27Mental Model
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