cannot create link with href attr

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this error seems to happen to getOptions function:

function getOptions(value) {
    var options = typeof value === 'object' ? value : {'href': value};
    return wysihtml.lang.object({}).merge(nodeOptions).merge({'attribute': value}).get();
 }

the options variable was just defined but not used, i must need pass an object value ， like { href： ‘http://xxx' }, it can be worked.