From b3c8447bbaf4ba90da86284d6a64c0b9ade23b8c Mon Sep 17 00:00:00 2001
From: Okiki Ojo <hey@okikio.dev>
Date: Sun, 22 Mar 2026 18:41:30 -0400
Subject: [PATCH] chore: update build configuration to enable Node-oriented
 type-checking and adjust compiler options

Signed-off-by: Okiki Ojo <hey@okikio.dev>
---
 helpers/operations/timing.ts |  2 +-
 scripts/build_npm.ts         | 20 ++++++++++++++------
 2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/helpers/operations/timing.ts b/helpers/operations/timing.ts
index c1de209..2138b31 100644
--- a/helpers/operations/timing.ts
+++ b/helpers/operations/timing.ts
@@ -140,7 +140,7 @@ export function delayEach<T>(
     transform(chunk, state, controller) {
       // Schedule delayed emission for this specific item
       const timeout = setTimeout(
-        (_chunk) => {
+        (_chunk: typeof chunk) => {
           controller.enqueue(_chunk);
           state.pendingTimeouts.delete(timeout);
           clearTimeout(timeout);
diff --git a/scripts/build_npm.ts b/scripts/build_npm.ts
index e1e8f06..0a81726 100644
--- a/scripts/build_npm.ts
+++ b/scripts/build_npm.ts
@@ -53,16 +53,24 @@ await build({
   outDir: "./npm",
   shims: { deno: false },
 
-  // Skip dnt's extra Node-oriented type-check pass. The Deno-native source has
-  // already been validated with `deno check **/*.ts`, so re-checking the
-  // transformed npm output here would mostly duplicate that verification while
-  // switching to Node-specific type resolution rules.
-  typeCheck: false,
+  // Keep dnt's Node-oriented type-check pass enabled so the transformed npm
+  // package is validated against the closest Node surface this dnt release can
+  // express, not just Deno's default type environment.
+  typeCheck: 'both',
+  compilerOptions: {
+    // dnt 0.42.3 cannot express an ES2024 target yet, so Promise.withResolvers
+    // still has to come from an ESNext lib even though Node 24 supports it at
+    // runtime. Keep the future-facing libs narrow to the features this package
+    // actually uses.
+    target: 'Latest',
+    lib: ['ES2023', 'DOM', 'DOM.Iterable', 'ESNext', 'ESNext.Promise', 'ESNext.Disposable'],
+  },
 
   // The Deno test suite imports jsr:@std/testing and other Deno-specific test
   // utilities. Running those files through Node would pull Deno-only types into
   // the npm build graph for reasons unrelated to the published library surface.
   test: false,
+  rootTestDir: './tests',
 
   package: {
     name: readConfigString("name"),
@@ -98,7 +106,7 @@ await build({
       provenance: true,
     },
     engines: {
-      node: ">=20",
+      node: ">=24",
     },
   },
 
-- 
2.51.2