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refinement and invocation                                . [] ()
unary operators                                          delete new typeof + - !
multiplication, division, remainder                      * / %
addition/concatenation,subtraction                       + -
inequality                                               >= <= ><
equality                                                 === !==
logical and                                              &&
logical or                                               ||
ternary                                                  ? :

typeof [number, string, boolean, undefined, function, object]
typeof array or null produces object