685         expression     : false,  property
712     function is(type, value) {  function
967                     expression : parenthesized(),  property
995                     expression : parenthesized(),  property
1665                     expression : expression(),  property
1796             call = new AST_New({ expression: exp, args: args });  property
1811                 if (value < 0) ret = new AST_UnaryPrefix({ operator: "-", expression: ret });  property
1969                     expression: (next(), parser()),  property
2021                     expression: maybe_assign(),  property
2298                     expression: expr,  property
2307                     expression: expr,  property
2316                     expression: expr,  property
2350                 expression: maybe_unary(no_in),  property
2369                 expression: exp,  property
2405         return new ctor({ operator: op, expression: expr });  property
2529     function expression(no_in, maybe_arrow) {  function