From 9fa565a088bb8c45bb11318f7b2808d401debbf5 Mon Sep 17 00:00:00 2001
From: glifocat <ethan@glifo.cat>
Date: Thu, 16 Apr 2026 13:51:43 +0200
Subject: [PATCH] fix: add .js extensions to matrix-js-sdk subpath imports
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Node.js ESM requires explicit .js extensions when importing subpaths
from other ESM packages that don't have matching exports map entries.
The current build marks matrix-js-sdk as external in tsup.config.ts,
so these import specifiers pass through verbatim to dist/index.js.
matrix-js-sdk is type: "module" since v39+ and does not export the
deep lib/ paths, causing ERR_MODULE_NOT_FOUND at runtime in any
Node.js project that imports this adapter without a bundler.

Also fixes matrix-js-sdk/lib/store → store/index.js (directory
import, not a single file).

Fixes #3
---
 src/index.test.ts                         |  4 ++--
 src/index.ts                              | 12 ++++++------
 src/messages/outbound.ts                  |  6 +++---
 src/store/chat-state-matrix-store.test.ts |  4 ++--
 src/store/chat-state-matrix-store.ts      | 12 ++++++------
 src/types.ts                              |  2 +-
 6 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/src/index.test.ts b/src/index.test.ts
index cc27915..3d0a76c 100644
--- a/src/index.test.ts
+++ b/src/index.test.ts
@@ -3,8 +3,8 @@ import { Chat, getEmoji, stringifyMarkdown } from "chat";
 import type { AdapterPostableMessage, ChatInstance, Logger, StateAdapter } from "chat";
 import { createMemoryState } from "@chat-adapter/state-memory";
 import { EventType, MsgType, RelationType, type MatrixClient } from "matrix-js-sdk";
-import { MatrixError } from "matrix-js-sdk/lib/http-api/errors";
-import { encodeRecoveryKey } from "matrix-js-sdk/lib/crypto-api/recovery-key";
+import { MatrixError } from "matrix-js-sdk/lib/http-api/errors.js";
+import { encodeRecoveryKey } from "matrix-js-sdk/lib/crypto-api/recovery-key.js";
 import { createMatrixAdapter, MatrixAdapter } from "./index";
 import { isMentioned } from "./messages/inbound";
 import { splitOversizedTextContent } from "./messages/outbound";
diff --git a/src/index.ts b/src/index.ts
index 042be70..0ce8ee1 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -42,14 +42,14 @@ import sdk, {
   ThreadFilterType,
   THREAD_RELATION_TYPE,
 } from "matrix-js-sdk";
-import type { IStore } from "matrix-js-sdk/lib/store";
+import type { IStore } from "matrix-js-sdk/lib/store/index.js";
 import type {
   RoomMessageEventContent,
-} from "matrix-js-sdk/lib/@types/events";
-import type { MediaEventContent } from "matrix-js-sdk/lib/@types/media";
-import { MatrixError } from "matrix-js-sdk/lib/http-api/errors";
-import { decodeRecoveryKey } from "matrix-js-sdk/lib/crypto-api/recovery-key";
-import { logger as matrixSDKLogger } from "matrix-js-sdk/lib/logger";
+} from "matrix-js-sdk/lib/@types/events.js";
+import type { MediaEventContent } from "matrix-js-sdk/lib/@types/media.js";
+import { MatrixError } from "matrix-js-sdk/lib/http-api/errors.js";
+import { decodeRecoveryKey } from "matrix-js-sdk/lib/crypto-api/recovery-key.js";
+import { logger as matrixSDKLogger } from "matrix-js-sdk/lib/logger.js";
 import {
   DEFAULT_COMMAND_PREFIX,
   FAST_SYNC_DEFAULTS,
diff --git a/src/messages/outbound.ts b/src/messages/outbound.ts
index 97241a9..c16c0d0 100644
--- a/src/messages/outbound.ts
+++ b/src/messages/outbound.ts
@@ -11,13 +11,13 @@ import {
   stringifyMarkdown,
 } from "chat";
 import { marked } from "marked";
-import { MatrixError } from "matrix-js-sdk/lib/http-api/errors";
+import { MatrixError } from "matrix-js-sdk/lib/http-api/errors.js";
 import { MsgType, RelationType } from "matrix-js-sdk";
 import type {
   RoomMessageEventContent,
   RoomMessageTextEventContent,
-} from "matrix-js-sdk/lib/@types/events";
-import type { MediaEventContent } from "matrix-js-sdk/lib/@types/media";
+} from "matrix-js-sdk/lib/@types/events.js";
+import type { MediaEventContent } from "matrix-js-sdk/lib/@types/media.js";
 import {
   escapeHTML,
   escapeMarkdownLinkText,
diff --git a/src/store/chat-state-matrix-store.test.ts b/src/store/chat-state-matrix-store.test.ts
index 6c713db..e2dca6c 100644
--- a/src/store/chat-state-matrix-store.test.ts
+++ b/src/store/chat-state-matrix-store.test.ts
@@ -1,8 +1,8 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 import type { Logger, StateAdapter } from "chat";
 import { createMemoryState } from "@chat-adapter/state-memory";
-import type { IStateEventWithRoomId } from "matrix-js-sdk/lib/@types/search";
-import type { IndexedToDeviceBatch } from "matrix-js-sdk/lib/models/ToDeviceMessage";
+import type { IStateEventWithRoomId } from "matrix-js-sdk/lib/@types/search.js";
+import type { IndexedToDeviceBatch } from "matrix-js-sdk/lib/models/ToDeviceMessage.js";
 import { ChatStateMatrixStore } from "./chat-state-matrix-store";
 
 function makeLogger(): Logger {
diff --git a/src/store/chat-state-matrix-store.ts b/src/store/chat-state-matrix-store.ts
index ad9390d..7cccdde 100644
--- a/src/store/chat-state-matrix-store.ts
+++ b/src/store/chat-state-matrix-store.ts
@@ -1,14 +1,14 @@
 import type { Logger, StateAdapter } from "chat";
 import { MatrixEvent, type IStartClientOpts } from "matrix-js-sdk";
-import type { IEvent } from "matrix-js-sdk/lib/models/event";
+import type { IEvent } from "matrix-js-sdk/lib/models/event.js";
 import type {
   IndexedToDeviceBatch,
   ToDeviceBatchWithTxnId,
-} from "matrix-js-sdk/lib/models/ToDeviceMessage";
-import { SyncAccumulator, type ISyncResponse } from "matrix-js-sdk/lib/sync-accumulator";
-import type { IStateEventWithRoomId } from "matrix-js-sdk/lib/@types/search";
-import { MemoryStore } from "matrix-js-sdk/lib/store/memory";
-import type { ISavedSync } from "matrix-js-sdk/lib/store";
+} from "matrix-js-sdk/lib/models/ToDeviceMessage.js";
+import { SyncAccumulator, type ISyncResponse } from "matrix-js-sdk/lib/sync-accumulator.js";
+import type { IStateEventWithRoomId } from "matrix-js-sdk/lib/@types/search.js";
+import { MemoryStore } from "matrix-js-sdk/lib/store/memory.js";
+import type { ISavedSync } from "matrix-js-sdk/lib/store/index.js";
 
 const STORE_VERSION = 1;
 const DEFAULT_PERSIST_INTERVAL_MS = 30_000;
diff --git a/src/types.ts b/src/types.ts
index 5e818a0..b890088 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,6 +1,6 @@
 import type { ICreateClientOpts, IStartClientOpts, MatrixClient } from "matrix-js-sdk";
 import type { Logger, StateAdapter } from "chat";
-import type { IStore } from "matrix-js-sdk/lib/store";
+import type { IStore } from "matrix-js-sdk/lib/store/index.js";
 
 export interface MatrixE2EEConfig {
   cryptoDatabasePrefix?: string;