Remove preserveModules:true in rollup.config.js.
Remove preserveModules:true in rollup.config.js.

This saves a small amount of bundle size, but more importantly prevents
Rollup from cluttering generated ESM modules with unrelated non-binding
import declarations.

apollographql/apollo-client,apollographql/apollo-client,apollostack/apollo-client,apollostack/apollo-client,apollostack/apollo-client