Error is a function
EvalError is a function
RangeError is a function
ReferenceError is a function
SyntaxError is a function
TypeError is a function
URIError is a function
Error.arity 1
EvalError.arity 1
RangeError.arity 1
ReferenceError.arity 1
SyntaxError.arity 1
TypeError.arity 1
URIError.arity 1
true
my error
Error
thrown @ 49
true
ReferenceError
"foo" is not defined
true
TypeError
Cannot call "foo_method" that has undefined value
Error
EvalError
RangeError
ReferenceError
SyntaxError
TypeError
URIError