fix: add extensions

Author: kentcdodds

src/express.ts

@@ -1,13 +1,13 @@
 // this is utilities for node's express module
 import type { RequestHandler } from 'express'
-import { getInstanceInfo } from '.'
+import { getInstanceInfo } from './index.js'
 import {
 	ensurePrimary,
 	handleTransactionalConsistency,
 	setTxCookie,
-} from './http'
+} from './http.js'
 
-export * from './http'
+export * from './http.js'
 
 /**
  * This is an express middleware that will ensure that if the client has a

src/http.ts

@@ -5,7 +5,7 @@ import {
 	getInstanceInfo,
 	getTxNumber,
 	getTxSetCookieHeader,
-} from '.'
+} from './index.js'
 
 /**
  * If the current instance is the primary instance, then returns false.

src/remix.ts

@@ -4,9 +4,9 @@ import {
 	getInstanceInfo,
 	getTxNumber,
 	getTxSetCookieHeader,
-} from '.'
+} from './index.js'
 
-export { getTxSetCookieHeader } from '.'
+export { getTxSetCookieHeader } from './index.js'
 
 /**
  * If the current instance is the primary instance, then returns false.