mirror of https://github.com/jkjoy/sunpeiwen.git
20 lines
393 B
JavaScript
20 lines
393 B
JavaScript
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var utils = require('../utils')
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, nodes = require('../nodes');
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/**
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* Lookup variable `name` or return Null.
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*
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* @param {String} name
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* @return {Mixed}
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* @api public
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*/
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function lookup(name){
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utils.assertType(name, 'string', 'name');
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var node = this.lookup(name.val);
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if (!node) return nodes.null;
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return this.visit(node);
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}
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lookup.params = ['name'];
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module.exports = lookup;
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