diff --git a/deploy/createTypesPackages.js b/deploy/createTypesPackages.js
index b2a3e9beb..a1677f0fc 100644
--- a/deploy/createTypesPackages.js
+++ b/deploy/createTypesPackages.js
@@ -151,7 +151,7 @@ const go = async () => {
 async function updatePackageJSON(pkg, packagePath) {
   const pkgJSONPath = new URL("package.json", packagePath);
   const packageText = fs.readFileSync(pkgJSONPath, "utf8");
-  /** @type {import("./template/package.json")} */
+  /** @type {typeof import("./template/package.json")} */
   const packageJSON = JSON.parse(packageText);
   packageJSON.name = pkg.name;
   packageJSON.description = pkg.description;
diff --git a/src/build/bcd.ts b/src/build/bcd.ts
index e6bc633f3..c54ceac85 100644
--- a/src/build/bcd.ts
+++ b/src/build/bcd.ts
@@ -1,4 +1,4 @@
-import * as Browser from "./types";
+import * as Browser from "./types.js";
 import {
   CompatStatement,
   SimpleSupportStatement,
diff --git a/src/build/bcd/mapper.ts b/src/build/bcd/mapper.ts
index 8f674eb20..1238cd684 100644
--- a/src/build/bcd/mapper.ts
+++ b/src/build/bcd/mapper.ts
@@ -5,7 +5,7 @@ import {
   SimpleSupportStatement,
 } from "bcd-idl-mapper";
 import api from "bcd-idl-mapper";
-import * as Browser from "../types";
+import * as Browser from "../types.js";
 import { filterMapRecord, isEmptyRecord } from "../utils/record.js";
 import { mapDefined } from "../helpers.js";
 import { hasStableImplementation } from "./stable.js";
diff --git a/src/build/patches.ts b/src/build/patches.ts
index d21404989..0b0da41df 100644
--- a/src/build/patches.ts
+++ b/src/build/patches.ts
@@ -1,5 +1,5 @@
 import { parse, type Value, type Node } from "kdljs";
-import type { Enum, Event, Property, Interface, WebIdl } from "./types";
+import type { Enum, Event, Property, Interface, WebIdl } from "./types.js";
 import { readdir, readFile } from "fs/promises";
 import { merge } from "./helpers.js";
 
diff --git a/src/build/types.d.ts b/src/build/types.ts
similarity index 100%
rename from src/build/types.d.ts
rename to src/build/types.ts
diff --git a/tsconfig.json b/tsconfig.json
index 768c6c291..930a16c85 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,8 +1,8 @@
 {
     "compilerOptions": {
         "target": "es2022",
-        "module": "esnext",
-        "moduleResolution": "node",
+        "module": "node16",
+        "moduleResolution": "node16",
         "outDir": "./lib",
         "strict": true,
         "esModuleInterop": true,