geoNear exception: 'near' field must be point - mongodb

Question

I have run the following query successfully in the mongo shell:
db.runCommand({
geoNear : "stores",
near : { type : "Point", coordinates : [ -3.978, 50.777 ] },
spherical : true,
limit : 10
})
I am trying to convert this into a mongoose query for my node service as shown in the docs.
Store.geoNear(
{ type : "Point", coordinates : [-3.978, 50.777]},
{ spherical : true, limit : 10 },
function (error, results, stats) {
//do stuff with results here
});
This is returning the following error:
MongoError: exception: 'near' field must be point
My Store schema is defined like this:
var storeSchema = new Schema({
// irrelevant fields...
locations : [
{
address : {
streetAddress : String,
postalCode : String
}
coords : {
type : [Number],
index : '2dsphere'
}
}
]
})
There is only one 2dsphere index on the collection, and as I mentioned, it works through the shell, just not with mongoose.
Edit: Other things I've tried without success:
Falling back to using mongodb native driver (same error, so I suspect it's mongodb rather than mongoose causing the problem):
Store.collection.geoNear(
{ type : "Point", coordinates : [-3.978, 50.777]},
{ spherical : true, limit : 10 },
function (error, results, stats) {
//do stuff with results here
});
Falling back to using legacy coordinates instead of geopoints (both mongoose and native (same error)):
Store.geoNear(
-3.978, 50.777,
{ spherical : true, limit : 10 },
function (error, results, stats) {
//do stuff with results here
});
Using runCommand from mongoose (this errors differently, saying that Store.db.command is not a function - the correct way to call this from mongoose would be an acceptable answer):
Store.db.command({
geoNear : "stores",
near : { type : "Point", coordinates : [ -3.978, 50.777 ] },
spherical : true,
limit : 10
}, function(error, results){})

Answer 1

Finally managed to work out how to fall back to use runCommand via the mongodb native driver:
Store.db.db.command({
geoNear : "stores",
near : { type : "Point", coordinates : [ -3.978, 50.777 ] },
spherical : true,
limit : 10
}, function(error, results){})