types.d.ts

declare module 'react-if'{
  interface IfOptions{
    condition: boolean
  }

  /**
   * If condition evaluates to true, renders the <Then /> block will be rendered, otherwise renders the <Else /> block. Either block may be omitted.
   *
   * This component can contain any number of <Then /> or <Else /> blocks, but only the first block of the right type (either Then or Else, depending on the condition) will be rendered.
   */
  export class If extends React.Component<IfOptions, any>{}

  /** Must contain only a single child, which it renders as-is. Should not be used outside of an <If /> block. */
  export class Then extends React.Component {}

  /** Must only contain a single child, which it renders as-is. Should not be used outside of an <If /> block. */
  export class Else extends React.Component {}
}