Common TypeScript declarations

gql.d.ts

declare module '*.gql' {
  import { DocumentNode } from 'graphql'
  const vaule: DocumentNode
  export default value
}

svgr.d.ts

declare module '*.svg' {
  interface SvgrComponent
    extends React.StatelessComponent<React.SVGAttributes<SVGElement>> {}

  const ReactComponent: SvgrComponent
  // You may want to use named export here, outside of NextJS:
  // const Component: ReactComponent
  // export = Component
  export default ReactComponent
}