refactor(far): deduplicate types from eventual-send by aliasing

packages/eventual-send/src/E.js

@@ -254,8 +254,11 @@ export default makeE;
 /** @typedef {ReturnType<makeE>} EProxy */
 
 /**
- * Creates a type that accepts both near and marshalled references that were
- * returned from `Remotable` or `Far`, and also promises for such references.
+ * Declare an object that is potentially a far reference of type Primary whose
+ * auxilliary data has type Local.  This should be used only for consumers of
+ * Far objects in arguments and declarations; the only creators of Far objects
+ * are distributed object creator components like the `Far` or `Remotable`
+ * functions.
  *
  * @template Primary The type of the primary reference.
  * @template [Local=DataOnly<Primary>] The local properties of the object.
@@ -274,6 +277,9 @@ export default makeE;
  * @see {@link https://github.com/microsoft/TypeScript/issues/31394}
  * @template T
  * @typedef {PromiseLike<T> | T} ERef
+ * Declare that `T` may or may not be a Promise.  This should be used only for
+ * consumers of arguments and declarations; return values should specifically be
+ * `Promise<T>` or `T` itself.
  */
 
 /**
@@ -406,8 +412,9 @@ export default makeE;
  */
 
 /**
- * Type for an object that must only be invoked with E.  It supports a given
- * interface but declares all the functions as asyncable.
+ * Declare a near object that must only be invoked with E, even locally.  It
+ * supports the `T` interface but additionally permits `T`'s methods to return
+ * `PromiseLike`s even if `T` declares them as only synchronous.
  *
  * @template T
  * @typedef {(

packages/far/src/exports.d.ts

@@ -0,0 +1 @@
+export { FarRef, ERef, EOnly, EReturn } from '@endo/eventual-send';

packages/far/src/exports.js

@@ -0,0 +1,2 @@
+// Just a dummy to use exports.d.ts and satisfy runtime imports.
+export {};

packages/far/src/index.js

@@ -1,30 +1,5 @@
 export { E } from '@endo/eventual-send';
 export { Far, getInterfaceOf, passStyleOf } from '@endo/pass-style';
 
-// TODO re-export from eventual-send, may require .d.ts
-/**
- * @template Primary
- * @template [Local=import('@endo/eventual-send').DataOnly<Primary>]
- * @typedef {import('@endo/eventual-send').FarRef<Primary, Local>} FarRef
- * Declare an object that is potentially a far reference of type Primary whose
- * auxilliary data has type Local.  This should be used only for consumers of
- * Far objects in arguments and declarations; the only creators of Far objects
- * are distributed object creator components like the `Far` or `Remotable`
- * functions.
- */
-
-/**
- * @template T
- * @typedef {import('@endo/eventual-send').ERef<T>} ERef
- * Declare that `T` may or may not be a Promise.  This should be used only for
- * consumers of arguments and declarations; return values should specifically be
- * `Promise<T>` or `T` itself.
- */
-
-/**
- * @template T
- * @typedef {import('@endo/eventual-send').EOnly<T>} EOnly
- * Declare a near object that must only be invoked with E, even locally.  It
- * supports the `T` interface but additionally permits `T`'s methods to return
- * `PromiseLike`s even if `T` declares them as only synchronous.
- */
+// eslint-disable-next-line import/export
+export * from './exports.js';