Demo

How to get javascript scopes

Web

Download required scripts:

$> wget https://raw.github.com/ariya/esprima/master/esprima.js
$> wget https://raw.github.com/Constellation/estraverse/master/estraverse.js
$> wget https://raw.github.com/Constellation/escope/master/escope.js

(or you can use bower to download esprima and escope components)

Example:

<script type="text/javascript" src="esprima.js"></script>
<script type="text/javascript" src="estraverse.js"></script>
<script type="text/javascript" src="escope.js"></script>
...
<script type="text/javascript">
    var value = "...";
    var ast = esprima.parse(value, {range: true, loc: true});
    var scopes = escope.analyze(ast).scopes;
    console.log(scopes);
</script>

NodeJS

Install required node packages:

$> npm install esprima
$> npm install escope

Example:

var esprima = require('esprima');
var escope = require('escope');

var value = "...";
var ast = esprima.parse(value, {range: true, loc: true});
var scopes = escope.analyze(ast).scopes;

console.log(scopes);

Credits

• Yusuke Suzuki (twitter: @Constellation) and other contributors of escope library.