A parameter or options object: a plain object (not null, an array, a string or a number). Spreading a string ({ ..."x" }) would send 0=x; spreading a number or null would silently drop what the caller meant.
null
{ ..."x" }
0=x
A parameter or options object: a plain object (not
null, an array, a string or a number). Spreading a string ({ ..."x" }) would send0=x; spreading a number ornullwould silently drop what the caller meant.