load(libdir + "asserts.js"); var offenders = [ "(1 ... n)", "[1 ... n]", "(...x)", "[...x for (x of y)]", "[...x, x for (x of y)]", "[...]", "(...)", "[...,]", "[... ...[]]", "(... ...[])", "[x, ...]", "(x, ...)" ]; for (var sample of offenders) { assertThrowsInstanceOf(function () { eval(sample); }, SyntaxError); }