Expected `OptionalType` param with default value but found `number` and `null`.

[chriswong]

/**
 * foo
 *
 * @param {number} [foo = 1] desc
 */

var jsdoc = doctrine.parse(
'/**\n'
+ ' * foo\n'
+ ' *\n'
+ ' * @param {number} [foo = 1] desc\n'
+ ' */'
    ,
    {
        strict: true,
        unwrap: true,
        sloppy: true,
        lineNumbers: true,
        recoverable: true
    }
);

JSDoc Object：

{
    "description": "foo",
    "tags": [{
            "title": "param",
            "description": "= 1] desc",
            "lineNumber": 3,
            "type": null,
            "name": "number"
        }]
}

Expect:

{
    "description": "foo",
    "tags": [{
            "title": "param",
            "description": "desc",
            "lineNumber": 3,
            "type": {
                "type": "OptionalType",
                "expression": {
                    "type": "NameExpression",
                    "name": "number"
                }
            },
            "name": "foo",
            "default": "1"
        }]
}

I'd fixed it up in our fork：
ecomfe@17faaa8

[nzakas]

Thanks. Do you want to submit a PR for this change? (Please see our contribution guidelines: http://eslint.org/docs/developer-guide/contributing/pull-requests)

[chriswong]

Yes, it's my pleasure.Working on it.