`round` methods take one required parameter. If a string is provided, the resulting `Temporal.Duration` object will be rounded to that unit. If an object is provided, its `smallestUnit` property is required while other properties are optional. A string is treated the same as an object whose `smallestUnit` property value is that string.

Type Parameters

T extends DateTimeUnit

Definition

SmallestUnit<T> | { smallestUnit: SmallestUnit<T>; roundingIncrement?: number; roundingMode?: RoundingMode; }