diff --git a/packages/jsapi-nodejs/README.md b/packages/jsapi-nodejs/README.md
index 5a3b6b4429..c45e23f996 100644
--- a/packages/jsapi-nodejs/README.md
+++ b/packages/jsapi-nodejs/README.md
@@ -1,4 +1,4 @@
-# @deephaven/jsapi-components
+# @deephaven/jsapi-nodejs
 
 Deephaven utils for consuming Jsapi from a server from a nodejs app. It can 
 optionally convert the server module format from `ESM` -> `CJS` or `CJS` -> `ESM` 
diff --git a/packages/jsapi-nodejs/src/index.ts b/packages/jsapi-nodejs/src/index.ts
index 951e56337b..a3ec855315 100644
--- a/packages/jsapi-nodejs/src/index.ts
+++ b/packages/jsapi-nodejs/src/index.ts
@@ -1,5 +1,5 @@
-export * from './errorUtils';
-export * from './fsUtils';
-export * from './loaderUtils';
-export * from './polyfillWs';
-export * from './serverUtils';
+export * from './errorUtils.js';
+export * from './fsUtils.js';
+export * from './loaderUtils.js';
+export * from './polyfillWs.js';
+export * from './serverUtils.js';
diff --git a/packages/jsapi-nodejs/src/loaderUtils.ts b/packages/jsapi-nodejs/src/loaderUtils.ts
index 6de081c326..f3964f0b23 100644
--- a/packages/jsapi-nodejs/src/loaderUtils.ts
+++ b/packages/jsapi-nodejs/src/loaderUtils.ts
@@ -2,9 +2,9 @@ import fs from 'node:fs';
 import path from 'node:path';
 import esbuild from 'esbuild';
 
-import { downloadFromURL, urlToDirectoryName } from './serverUtils';
-import { polyfillWs } from './polyfillWs';
-import { ensureDirectoriesExist, getDownloadPaths } from './fsUtils';
+import { downloadFromURL, urlToDirectoryName } from './serverUtils.js';
+import { polyfillWs } from './polyfillWs.js';
+import { ensureDirectoriesExist, getDownloadPaths } from './fsUtils.js';
 
 type NonEmptyArray<T> = [T, ...T[]];
 
diff --git a/packages/jsapi-nodejs/src/serverUtils.ts b/packages/jsapi-nodejs/src/serverUtils.ts
index e40310dd69..8aae9c2bc3 100644
--- a/packages/jsapi-nodejs/src/serverUtils.ts
+++ b/packages/jsapi-nodejs/src/serverUtils.ts
@@ -1,6 +1,6 @@
 import * as http from 'node:http';
 import * as https from 'node:https';
-import { hasErrorCode, isAggregateError } from './errorUtils';
+import { hasErrorCode, isAggregateError } from './errorUtils.js';
 
 export const SERVER_STATUS_CHECK_TIMEOUT = 3000;
 
diff --git a/packages/jsapi-nodejs/tsconfig.json b/packages/jsapi-nodejs/tsconfig.json
index 8c183dff36..e064ffa6b2 100644
--- a/packages/jsapi-nodejs/tsconfig.json
+++ b/packages/jsapi-nodejs/tsconfig.json
@@ -1,6 +1,13 @@
 {
   "extends": "../../tsconfig.json",
   "compilerOptions": {
+    // NodeNext is the recommended module setting for Node.js v12 or later. This
+    // allows CommonJS and ESM consumers to use this package.
+    "module": "NodeNext",
+    // This is the required setting when `module` is set to `NodeNext`. One side
+    // effect of this setting is that relative imports require explicit `.js`
+    // extensions.
+    "moduleResolution": "NodeNext",
     "rootDir": "src/",
     "outDir": "dist/"
   },
diff --git a/tsconfig.json b/tsconfig.json
index b20df71bd2..81f179fe39 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -17,7 +17,12 @@
     "excludeDirectories": ["**/node_modules", "**/dist"]
   },
   "references": [
+    // `npm run types` relies on project references to build types. All packages
+    // must be included in the reference tree somewhere. Top-level packages need
+    // to be included here, and their respective `tsconfig.json` files should
+    // reference their dependencies.
     { "path": "./packages/code-studio" },
-    { "path": "./packages/embed-widget" }
+    { "path": "./packages/embed-widget" },
+    { "path": "./packages/jsapi-nodejs" }
   ]
 }