Escope (escope) is ECMAScript scope analyzer extracted from esmangle project.
var escope = require('escope');
var esprima = require('esprima');
var estraverse = require('estraverse');
var ast = esprima.parse(code);
var scopeManager = escope.analyze(ast);
var currentScope = scopeManager.acquire(ast); // global scope
estraverse.traverse(ast, {
enter: function(node, parent) {
// do stuff
if (/Function/.test(node.type)) {
currentScope = scopeManager.acquire(node); // get current function scope
}
},
leave: function(node, parent) {
if (/Function/.test(node.type)) {
currentScope = currentScope.upper; // set to parent scope
}
// do stuff
}
});Generated JSDoc is here.
Demonstration is here by Sasha Mazurov (twitter: @mazurov). issue
And there are tools constructed on Escope.
- Esmangle is a minifier / mangler / optimizer.
- Eslevels is a scope levels analyzer and SublimeText plugin for scope context coloring is constructed on it.
- Esgoggles is JavaScript code browser.
Copyright (C) 2012-2013 Yusuke Suzuki (twitter: @Constellation) and other contributors.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
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