1726     function vardefs(type, no_in) {  argument
1734                 value = maybe_assign(no_in);
1735             } else if (!no_in && (type === AST_SymbolConst || name instanceof AST_Destructured)) {
1756     var const_ = function(no_in) {  argument
1759             definitions : vardefs(AST_SymbolConst, no_in),
1764     var let_ = function(no_in) {  argument
1767             definitions : vardefs(AST_SymbolLet, no_in),
1772     var var_ = function(no_in) {  argument
1775             definitions : vardefs(AST_SymbolVar, no_in),
2342     function maybe_unary(no_in) {  argument
2350                 expression: maybe_unary(no_in),
2362                 exp = maybe_assign(no_in);
2365                 exp = maybe_assign(no_in);
2377             var ex = make_unary(AST_UnaryPrefix, start, maybe_unary(no_in));
2408     var expr_op = function(left, min_precision, no_in) {  argument
2410         if (op == "in" && no_in) op = null;
2414             var right = expr_op(maybe_unary(no_in), op == "**" ? precision - 1 : precision, no_in);
2421             }), min_precision, no_in);
2426     function expr_ops(no_in) {  argument
2427         return expr_op(maybe_unary(no_in), 0, no_in);
2430     var maybe_conditional = function(no_in) {  argument
2432         var expr = expr_ops(no_in);
2441                 alternative : maybe_assign(no_in),
2510     function maybe_assign(no_in) {  argument
2512         var left = maybe_conditional(no_in), val = S.token.value;
2520                     right    : maybe_assign(no_in),
2529     function expression(no_in, maybe_arrow) {  argument
2538             exprs.push(maybe_assign(no_in));