correct some checks (we can't check for not-primitive, we need to check for is-object)
correct some checks (we can't check for not-primitive, we need to check for is-object)

toshok/echojs,toshok/echojs,carlosalberto/echo-js,carlosalberto/echo-js,toshok/echojs,toshok/echojs,toshok/echojs,carlosalberto/echo-js,toshok/echojs,carlosalberto/echo-js,toshok/echojs,carlosalberto/echo-js,toshok/echojs,carlosalberto/echo-js