1 2 3 4 5 6 7 8 9 10 | 1 1 1 7 2 | var t = require("../../types"); exports.optional = true; exports.Identifier = function (node, parent) { if (node.name === "undefined" && t.isReferenced(node, parent)) { return t.unaryExpression("void", t.literal(0), true); } }; |