javascript - Why does this give me an error? -

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var nop = {};  var f = {};  [nop.foo] = (f.foo || undefined);

note f.foo not present.

returns following error:

uncaught typeerror: cannot read property 'symbol(symbol.iterator)' of undefined

why?

it seems reason destructuring [nope.foo] not matching (whatever) you'd better change so:

var nop = {};  var f = {};  [nop.foo] = [(f.foo || 23)];  console.log(nop)


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