Parsing validation may not be strict enough

[axic]

The date parsing feature may not be strict enough:

• moment("20120101") gives Invalid Date (probably it would understand it as unix time?)
• moment("2012-01-01") parses the date correctly
• moment("20120101", "YYYYMMDD") parses it correctly as well

However with a bogus date string I noticed an odd behaviour:

• moment("a") correctly gives Invalid Date
• moment("a", "YYYYMMDD") on the other hand results in: Sat Jan 01 0 00:00:00 GMT+0000 (GMT)

I really hoped the date parsing would do some validity checks for me (e.g. check against the length specified in the format and check for numbers vs. strings).

Is this the desired behaviour or a bug?

Also: moment("") and moment(null) both result in null being returned. For an empty string should that be null or Invalid Date?

[axic]

I am so sorry this went to the wrong project :)