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57 lines
1.1 KiB
Markdown
57 lines
1.1 KiB
Markdown
# astw
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walk the ast
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[](http://ci.testling.com/substack/astw)
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[](http://travis-ci.org/substack/astw)
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This module is a faster version of
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[falafel](https://github.com/substack/node-falafel)
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that only does ast walking and `.parent` tracking, not source transforms.
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# example
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``` js
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var astw = require('astw');
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var deparse = require('escodegen').generate;
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var walk = astw('4 + beep(5 * 2)');
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walk(function (node) {
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var src = deparse(node);
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console.log(node.type + ' :: ' + JSON.stringify(src));
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});
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```
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# methods
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``` js
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var astw = require('astw')
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```
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## var walk = astw(src, opts={})
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Return a `walk()` function from the source string or ast object `src`.
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Optionally:
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* `opts.ecmaVersion` - default: 8
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## walk(cb)
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Walk the nodes in the ast with `cb(node)` where `node` is each element in the
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ast from [esprima](http://esprima.org/) but with an additional `.parent`
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reference to the parent node.
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# install
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With [npm](https://npmjs.org) do:
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```
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npm install astw
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```
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# license
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MIT
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