diff --git a/tsconfig.json b/tsconfig.json
index 85d09a39..19f75f50 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,7 +1,7 @@
 {
   "compilerOptions": {
     "target": "es2022",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
-    "module": "commonjs", 
+    "module": "nodenext", 
     "declaration": true,
     "outDir": "./typescript/dist",                                   /* Specify what module code is generated. */
     "paths": {
diff --git a/typescript/src/async-callbacks.ts b/typescript/src/async-callbacks.ts
index 57041c5d..bad5bcf6 100644
--- a/typescript/src/async-callbacks.ts
+++ b/typescript/src/async-callbacks.ts
@@ -3,9 +3,9 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/
  */
-import { CALL_ERROR, CALL_UNEXPECTED_ERROR } from "./rust-call";
-import { type UniffiHandle, UniffiHandleMap } from "./handle-map";
-import { type UniffiByteArray } from "./ffi-types";
+import { CALL_ERROR, CALL_UNEXPECTED_ERROR } from "./rust-call.js";
+import { type UniffiHandle, UniffiHandleMap } from "./handle-map.js";
+import { type UniffiByteArray } from "./ffi-types.js";
 
 // Some additional data we hold for each in-flight promise.
 type PromiseHelper = {
diff --git a/typescript/src/async-rust-call.ts b/typescript/src/async-rust-call.ts
index 0ddc9b95..9ce589c1 100644
--- a/typescript/src/async-rust-call.ts
+++ b/typescript/src/async-rust-call.ts
@@ -3,14 +3,14 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/
  */
-import { UniffiInternalError } from "./errors";
-import { type UniffiByteArray } from "./ffi-types";
-import { UniffiHandleMap, type UniffiHandle } from "./handle-map";
+import { UniffiInternalError } from "./errors.js";
+import { type UniffiByteArray } from "./ffi-types.js";
+import { UniffiHandleMap, type UniffiHandle } from "./handle-map.js";
 import {
   type UniffiErrorHandler,
   type UniffiRustCallStatus,
   UniffiRustCaller,
-} from "./rust-call";
+} from "./rust-call.js";
 
 const UNIFFI_RUST_FUTURE_POLL_READY = 0;
 const UNIFFI_RUST_FUTURE_POLL_MAYBE_READY = 1;
diff --git a/typescript/src/callbacks.ts b/typescript/src/callbacks.ts
index 703b7982..233ed472 100644
--- a/typescript/src/callbacks.ts
+++ b/typescript/src/callbacks.ts
@@ -3,18 +3,18 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/
  */
-import { type FfiConverter, FfiConverterUInt64 } from "./ffi-converters";
-import { type UniffiByteArray, RustBuffer } from "./ffi-types";
+import { type FfiConverter, FfiConverterUInt64 } from "./ffi-converters.js";
+import { type UniffiByteArray, RustBuffer } from "./ffi-types.js";
 import {
   type UniffiHandle,
   UniffiHandleMap,
   defaultUniffiHandle,
-} from "./handle-map";
+} from "./handle-map.js";
 import {
   CALL_ERROR,
   CALL_UNEXPECTED_ERROR,
   type UniffiRustCallStatus,
-} from "./rust-call";
+} from "./rust-call.js";
 
 const handleConverter = FfiConverterUInt64;
 
diff --git a/typescript/src/errors.ts b/typescript/src/errors.ts
index cb8a6864..e01f803a 100644
--- a/typescript/src/errors.ts
+++ b/typescript/src/errors.ts
@@ -4,7 +4,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/
  */
 
-import { uniffiTypeNameSymbol } from "./symbols";
+import { uniffiTypeNameSymbol } from "./symbols.js";
 
 // The top level error class for all uniffi-wrapped errors.
 //
diff --git a/typescript/src/ffi-converters.ts b/typescript/src/ffi-converters.ts
index fa4bddfd..ecd38c0c 100644
--- a/typescript/src/ffi-converters.ts
+++ b/typescript/src/ffi-converters.ts
@@ -3,8 +3,8 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/
  */
-import { UniffiInternalError } from "./errors";
-import { type UniffiByteArray, RustBuffer } from "./ffi-types";
+import { UniffiInternalError } from "./errors.js";
+import { type UniffiByteArray, RustBuffer } from "./ffi-types.js";
 
 // https://github.com/mozilla/uniffi-rs/blob/main/docs/manual/src/internals/lifting_and_lowering.md
 export interface FfiConverter<FfiType, TsType> {
diff --git a/typescript/src/ffi-types.ts b/typescript/src/ffi-types.ts
index abb7edc1..b7669bd4 100644
--- a/typescript/src/ffi-types.ts
+++ b/typescript/src/ffi-types.ts
@@ -3,7 +3,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/
  */
-import { UniffiInternalError } from "./errors";
+import { UniffiInternalError } from "./errors.js";
 
 export type UniffiByteArray = Uint8Array;
 
diff --git a/typescript/src/handle-map.ts b/typescript/src/handle-map.ts
index 9df30efc..bbd363d4 100644
--- a/typescript/src/handle-map.ts
+++ b/typescript/src/handle-map.ts
@@ -3,7 +3,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/
  */
-import { UniffiInternalError } from "./errors";
+import { UniffiInternalError } from "./errors.js";
 
 export type UniffiHandle = bigint;
 export const defaultUniffiHandle = BigInt("0");
diff --git a/typescript/src/index.ts b/typescript/src/index.ts
index bb5b5405..40222a7b 100644
--- a/typescript/src/index.ts
+++ b/typescript/src/index.ts
@@ -6,17 +6,17 @@
 // Entry point for the runtime for uniffi-bindgen-react-native.
 // This modules is not needed directly, but is imported from generated code.
 //
-export * from "./async-callbacks";
-export * from "./async-rust-call";
-export * from "./callbacks";
-export * from "./enums";
-export * from "./errors";
-export * from "./ffi-converters";
-export * from "./ffi-types";
-export * from "./handle-map";
-export * from "./objects";
-export * from "./records";
-export * from "./result";
-export * from "./rust-call";
-export * from "./symbols";
-export * from "./type-utils";
+export * from "./async-callbacks.js";
+export * from "./async-rust-call.js";
+export * from "./callbacks.js";
+export * from "./enums.js";
+export * from "./errors.js";
+export * from "./ffi-converters.js";
+export * from "./ffi-types.js";
+export * from "./handle-map.js";
+export * from "./objects.js";
+export * from "./records.js";
+export * from "./result.js";
+export * from "./rust-call.js";
+export * from "./symbols.js";
+export * from "./type-utils.js";
diff --git a/typescript/src/objects.ts b/typescript/src/objects.ts
index 7f5e9af9..f1807acb 100644
--- a/typescript/src/objects.ts
+++ b/typescript/src/objects.ts
@@ -8,12 +8,12 @@ import {
   AbstractFfiConverterByteArray,
   type FfiConverter,
   FfiConverterUInt64,
-} from "./ffi-converters";
-import { RustBuffer } from "./ffi-types";
-import type { UniffiRustArcPtr } from "./rust-call";
-import { type UniffiHandle, UniffiHandleMap } from "./handle-map";
-import { type StructuralEquality } from "./type-utils";
-import { UniffiInternalError, UniffiThrownObject } from "./errors";
+} from "./ffi-converters.js";
+import { RustBuffer } from "./ffi-types.js";
+import type { UniffiRustArcPtr } from "./rust-call.js";
+import { type UniffiHandle, UniffiHandleMap } from "./handle-map.js";
+import { type StructuralEquality } from "./type-utils.js";
+import { UniffiInternalError, UniffiThrownObject } from "./errors.js";
 
 /**
  * Marker interface for all `interface` objects that cross the FFI.
diff --git a/typescript/src/result.ts b/typescript/src/result.ts
index edc51fe1..54311e66 100644
--- a/typescript/src/result.ts
+++ b/typescript/src/result.ts
@@ -4,9 +4,9 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/
  */
 
-import { type UniffiByteArray } from "./ffi-types";
-import { type UniffiReferenceHolder } from "./callbacks";
-import { type UniffiRustCallStatus } from "./rust-call";
+import { type UniffiByteArray } from "./ffi-types.js";
+import { type UniffiReferenceHolder } from "./callbacks.js";
+import { type UniffiRustCallStatus } from "./rust-call.js";
 
 // This Result combines RustCallStatus and ReferenceHolder.
 // This is principally so we can _return_ something from calling from native into typescript.
diff --git a/typescript/src/rust-call.ts b/typescript/src/rust-call.ts
index 4e13799c..0cdfaf96 100644
--- a/typescript/src/rust-call.ts
+++ b/typescript/src/rust-call.ts
@@ -3,8 +3,8 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/
  */
-import { UniffiInternalError } from "./errors";
-import { type UniffiByteArray } from "./ffi-types";
+import { UniffiInternalError } from "./errors.js";
+import { type UniffiByteArray } from "./ffi-types.js";
 
 export const CALL_SUCCESS = 0;
 export const CALL_ERROR = 1;