Combining GraphQL queries - graphql

Question

I am building my first GraphQL based project so forgive me if this is a newbie question. I have arranged my queries and mutations in the following fashion:
├── graphql
│   ├── lessons
│   │   ├── logic.js
│   │   ├── query.js
│   │   ├── schema.js
│   │   └── types.js
│   ├── schema.js
│   └── users
│   ├── logic.js
│   ├── mutation.js
│   ├── query.js
│   ├── schema.js
│   └── types.js
This is my users/query.js file:
const graphql = require('graphql')
const types = require('./types.js')
const logic = require('./logic.js')
module.exports = new graphql.GraphQLObjectType({
name: 'UserQuery',
fields: {
user: {
type: types.userType,
args: {
email: { type: new graphql.GraphQLNonNull(graphql.GraphQLString) }
},
resolve: (root, { email }, context) => logic.getUser(email, context)
}
}
})
In my schema.js, I have combined the queries of users and lessons as per the following code:
module.exports = new graphql.GraphQLSchema({
query: new graphql.GraphQLObjectType({
name: 'RootQuery',
fields: {
lessons: { type: require('./lessons/query.js') },
users: { type: require('./users/query.js') }
}
})
})
Now the problem is, the following query:
{
users {
user(email: "a#.a") {
name,
purchases
}
}
}
is producing the following output:
{
"data": {
"users": null
}
}
I am getting a null in place of a user record. What am I doing wrong here?