exports is undefined?

[bluesheeva]

Hi

I tried to use estraverse as external javascript library for a website that I develop. Whenever I call estraverse (estraverse.traverse), it gaves me an error: 'exports' is undefined. Can someone help with this?

Here are my code:

<script type="text/javascript" src="plugins/esprima.js"></script> <script type="text/javascript" src="plugins/estraverse.js"></script>

var ast;
ast = esprima.parse('var answer = 42;var answer2 = 45;function f(){var answer3;}');
ast = JSON.stringify(ast);

var test;
estraverse.traverse(ast, {
enter: function (node, parent) {
if (node.type == 'FunctionExpression' || node.type == 'FunctionDeclaration')
return estraverse.VisitorOption.Skip;
},
leave: function (node, parent) {
if (node.type == 'VariableDeclarator')
test += node.id.name;
}
});

[twada]

I met the same problem yesterday and found that current estraverse codebase is not designed for web browsers. This is not a problem when we use browserify or webpack.

So I built estraverse by myself.

browserify --standalone estraverse node_modules/estraverse/estraverse.js > build/estraverse.browser.js

<script type="text/javascript" src="./path/to/build/estraverse.browser.js"></script>

works as expected.

[bluesheeva]

Hi twada. It works!! thanks for the solution.