Fix moduleResolution:node16 CommonJS compatibility

[benjie]

Fixes #570.

This fix was tested by applying the equivalent fix to a real project exhibiting the TypeScript issue and seeing if it would now compile (yes):

diff --git a/lib/index.d.cts b/lib/index.d.cts
new file mode 100644
index 0000000000000000000000000000000000000000..3d9337b5edcde8c7b8a98aa9cd81c6b1a1451542
--- /dev/null
+++ b/lib/index.d.cts
@@ -0,0 +1,4 @@
+export { ParameterTransform, QueryParameters, InterpolatedQuery, QueryParameter, } from './preprocessor.js';
+export { processTSQueryAST } from './preprocessor-ts.js';
+export { processSQLQueryIR } from './preprocessor-sql.js';
+export { sql, TaggedQuery, PreparedQuery } from './tag.js';
diff --git a/package.json b/package.json
index bed91dd3d360132d3e0b18375f4dc7d89cb4a10b..57491d5b4b2e6f5e87016a888a01001b8614a663 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,11 @@
   "type": "module",
   "exports": {
     ".": {
-      "types": "./lib/index.d.ts",
+      "types": {
+        "import": "./lib/index.d.ts",
+        "require": "./lib/index.d.cts",
+        "default": "./lib/index.d.ts"
+      },
       "import": "./lib/index.js",
       "require": "./lib/index.cjs",
       "default": "./lib/index.js"

and then by running npm run build and checking to see that packages/runtime/lib/index.d.cts exists (yes).

Thanks for your work on this project! :heart:

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[adelsz]

Thanks for investigating and fixing this @benjie