See
https://esdiscuss.org/topic/default-operator-strawman-rather-than#content-13
and surrounding thread.
/be
Isiah Meadows wrote:
I know it's a little late for this, but what was the rationale of
using only `undefined` instead of both that and `null` to denote
omitted values for optional arguments in ES6? Before this change, it
was a frequent idiom to check optional arguments via `== null` instead
of `=== undefined` and pass `null` as the argument to denote the
absence of a value.
Just a curious question.
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