michael@0: // 'arguments' is banned in a function with a rest param,
michael@0: // even nested in an arrow-function parameter default value
michael@0: 
michael@0: load(libdir + "asserts.js");
michael@0: 
michael@0: var mistakes = [
michael@0:     "(...rest) => arguments",
michael@0:     "(...rest) => (x=arguments) => 0",
michael@0:     "function f(...rest) { return (x=arguments) => 0; }",
michael@0:     "function f(...rest) { return (x=(y=arguments) => 1) => 0; }",
michael@0: ];
michael@0: 
michael@0: for (var s of mistakes)
michael@0:     assertThrowsInstanceOf(function () { eval(s); }, SyntaxError);