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- var utils = require('../utils')
- , nodes = require('../nodes');
- /**
- * Lookup variable `name` or return Null.
- *
- * @param {String} name
- * @return {Mixed}
- * @api public
- */
- function lookup(name){
- utils.assertType(name, 'string', 'name');
- var node = this.lookup(name.val);
- if (!node) return nodes.null;
- return this.visit(node);
- }
- lookup.params = ['name'];
- module.exports = lookup;
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