Module duration 

upstream calculation/duration.ts.

Structs

Duration

upstream Duration: a JS object of unit -> number, keeping insertion order.

Enums

DurationUnit

A key of upstream’s Duration object, including the short aliases.

Functions

add_duration

addDuration(ref, duration). Mutates duration exactly like upstream.

js_round

JS Math.round: halves round up (towards +infinity).

reverse_duration

reverseDuration(duration).