javascript - No line number specified in console error message. What to do? -


in recent day faced kind of error message, has no position specified. debugging becomes more difficult. did wrong?

when started re-define json.parse functions of objects, after appears first time. replaced them normal functions, error message still strange.

maybe because i'm writing prototype functions, , call them before constructing new object?

is because call function console?

line number missing

i managed simplify error:

var o = {g : false}; function f(){     console.log(o.g()); }

if call chrome , form console, not line number.


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