hexo/node_modules/stylus/lib/functions/lookup.js

20 lines
393 B
JavaScript

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;