Const
The end marker a source reports in place of a value to end the feed opened over it.
No value a source produces is ever mistaken for the marker, so undefined, null and every other falsy value stay legal items.
undefined
null
inlet to open a feed over an external source of items
The end marker a source reports in place of a value to end the feed opened over it.
No value a source produces is ever mistaken for the marker, so
undefined,nulland every other falsy value stay legal items.