findSync doesn't work with js files because the loader is async #1454
Description
I discovered this debugging a issue with the eslint plugin.
https://github.com/kamilkisiela/graphql-config/blob/master/src/helpers/cosmiconfig.ts#L94
needs to load the jsSync loader instead of the js one, otherwise when you use the findSync methods on this package, a promise is passed as the config to graphql-config.