Regex: Error: Can't use $options with String

As defined in the MongoDB documentation, the following syntax :

find(name: { $regex : 'abc', $options: 'i' } )

is correct.

However, I’ve got the error Can’t use $options with String

The same query works when I use directly the mongo shell. I’m using mongoose 2.3.10 and mongo 2.0

[mkopala]

I’m having an almost identical issue, except that I’m using a variable:

x = 'abc'
find({name: { $regex : x, $options: 'i' }} )

and getting the same error. I had to solve it with:

find({ name: new RegExp(x, 'i')}})

[aheckmann]

just pass a RegExp directly:

find(name: { /abc/i } )