convertFieldToGraphQL(field, prefix = '', schemaComposer) {

I'm getting an unexpected token here. Any idea? I'm using the latest version of node (10). My import statement looks like this....

import composeWithMongoose, { convertSchemaToGraphQL } from 'graphql-compose-
mongoose/node8';

Here are parts of my package.json

```
"graphql": "^0.13.2",
"graphql-compose": "^4.3.0",
"graphql-compose-connection": "^3.0.1",
"graphql-compose-dataloader": "^1.1.2",
"graphql-compose-mongoose": "^4.1.1",
"graphql-connection": "^2.0.1",
"graphql-loader": "^1.2.1",
"graphql-mongoose": "^0.0.0",
"graphql-server-express": "^1.3.6",
"graphql-tools": "^3.0.1",
```