diff --git a/scripts/build b/scripts/build
index 7b100ad..047fe3d 100755
--- a/scripts/build
+++ b/scripts/build
@@ -28,20 +28,15 @@ node scripts/utils/make-dist-package-json.cjs > dist/package.json
 
 # build to .js/.mjs/.d.ts files
 npm exec tsc-multi
-# we need to add exports = module.exports = Gitpod to index.js;
-# No way to get that from index.ts because it would cause compile errors
+# we need to patch index.js so that `new module.exports()` works for cjs backwards
+# compat. No way to get that from index.ts because it would cause compile errors
 # when building .mjs
 node scripts/utils/fix-index-exports.cjs
-# with "moduleResolution": "nodenext", if ESM resolves to index.d.ts,
-# it'll have TS errors on the default import.  But if it resolves to
-# index.d.mts the default import will work (even though both files have
-# the same export default statement)
-cp dist/index.d.ts dist/index.d.mts
 cp tsconfig.dist-src.json dist/src/tsconfig.json
 cp src/internal/shim-types.d.ts dist/internal/shim-types.d.ts
 cp src/internal/shim-types.d.ts dist/internal/shim-types.d.mts
 mkdir -p dist/internal/shims
-cp src/internal/shims/*.{mjs,js,d.ts} dist/internal/shims
+cp src/internal/shims/*.{mjs,js,d.ts,d.mts} dist/internal/shims
 
 node scripts/utils/postprocess-files.cjs
 
diff --git a/src/internal/shims/crypto.node.d.mts b/src/internal/shims/crypto.node.d.mts
new file mode 100644
index 0000000..5cc1963
--- /dev/null
+++ b/src/internal/shims/crypto.node.d.mts
@@ -0,0 +1 @@
+export { crypto } from './crypto.node.js';
diff --git a/src/internal/shims/file.node.d.mts b/src/internal/shims/file.node.d.mts
new file mode 100644
index 0000000..38cc9ff
--- /dev/null
+++ b/src/internal/shims/file.node.d.mts
@@ -0,0 +1 @@
+export { File } from './file.node.js';