Creates a new Observe function that converts values, using undefined (or void) as the skip signal. U must not include undefined — if the filter can legitimately produce undefined as a value, use withMap instead and handle absent values downstream.
undefined
void
withMap
Creates a new Observe function that converts values, using
undefined(orvoid) as the skip signal. U must not includeundefined— if the filter can legitimately produceundefinedas a value, usewithMapinstead and handle absent values downstream.