From b327256305143f61b566ac4cc0c309c251b20b3d Mon Sep 17 00:00:00 2001
From: Klink <85062+dogmar@users.noreply.github.com>
Date: Sun, 14 Jun 2026 20:47:07 -0700
Subject: [PATCH] fix: serve correct CJS type declarations from package.json
 exports
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Every exports entry pointed `types` at the ESM `.d.mts` even under the
`require` condition, so TS `node16`/`nodenext` CJS consumers resolved
ESM declarations for a CJS `require` — the classic attw "incorrect types
for require" failure. The build already emits `.d.cts` for the index and
all 7 subpaths; they were just unreachable.

Nest `types` under `import`/`require` per subpath (`.d.mts` for import,
`.d.cts` for require), point the top-level `types` at `.d.cts` to match
`main` (CJS), add `typesVersions` so legacy node10 resolves subpath types,
and expose `./package.json`.

Verified with @arethetypeswrong/cli: "No problems found" across node10,
node16 (CJS + ESM), and bundler.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 package/package.json | 116 +++++++++++++++++++++++++++++++++----------
 1 file changed, 91 insertions(+), 25 deletions(-)

diff --git a/package/package.json b/package/package.json
index a70af90..c5b5487 100644
--- a/package/package.json
+++ b/package/package.json
@@ -17,47 +17,113 @@
   "sideEffects": false,
   "main": "./dist/index.cjs",
   "module": "./dist/index.mjs",
-  "types": "./dist/index.d.mts",
+  "types": "./dist/index.d.cts",
+  "typesVersions": {
+    "*": {
+      "plain-date": [
+        "./dist/formats/plain-date.d.cts"
+      ],
+      "plain-date-time": [
+        "./dist/formats/plain-date-time.d.cts"
+      ],
+      "plain-month-day": [
+        "./dist/formats/plain-month-day.d.cts"
+      ],
+      "plain-year-month": [
+        "./dist/formats/plain-year-month.d.cts"
+      ],
+      "zoned-date-time": [
+        "./dist/formats/zoned-date-time.d.cts"
+      ],
+      "object": [
+        "./dist/formats/object.d.cts"
+      ],
+      "date": [
+        "./dist/formats/date.d.cts"
+      ]
+    }
+  },
   "exports": {
+    "./package.json": "./package.json",
     ".": {
-      "types": "./dist/index.d.mts",
-      "import": "./dist/index.mjs",
-      "require": "./dist/index.cjs"
+      "import": {
+        "types": "./dist/index.d.mts",
+        "default": "./dist/index.mjs"
+      },
+      "require": {
+        "types": "./dist/index.d.cts",
+        "default": "./dist/index.cjs"
+      }
     },
     "./plain-date": {
-      "types": "./dist/formats/plain-date.d.mts",
-      "import": "./dist/formats/plain-date.mjs",
-      "require": "./dist/formats/plain-date.cjs"
+      "import": {
+        "types": "./dist/formats/plain-date.d.mts",
+        "default": "./dist/formats/plain-date.mjs"
+      },
+      "require": {
+        "types": "./dist/formats/plain-date.d.cts",
+        "default": "./dist/formats/plain-date.cjs"
+      }
     },
     "./plain-date-time": {
-      "types": "./dist/formats/plain-date-time.d.mts",
-      "import": "./dist/formats/plain-date-time.mjs",
-      "require": "./dist/formats/plain-date-time.cjs"
+      "import": {
+        "types": "./dist/formats/plain-date-time.d.mts",
+        "default": "./dist/formats/plain-date-time.mjs"
+      },
+      "require": {
+        "types": "./dist/formats/plain-date-time.d.cts",
+        "default": "./dist/formats/plain-date-time.cjs"
+      }
     },
     "./plain-month-day": {
-      "types": "./dist/formats/plain-month-day.d.mts",
-      "import": "./dist/formats/plain-month-day.mjs",
-      "require": "./dist/formats/plain-month-day.cjs"
+      "import": {
+        "types": "./dist/formats/plain-month-day.d.mts",
+        "default": "./dist/formats/plain-month-day.mjs"
+      },
+      "require": {
+        "types": "./dist/formats/plain-month-day.d.cts",
+        "default": "./dist/formats/plain-month-day.cjs"
+      }
     },
     "./plain-year-month": {
-      "types": "./dist/formats/plain-year-month.d.mts",
-      "import": "./dist/formats/plain-year-month.mjs",
-      "require": "./dist/formats/plain-year-month.cjs"
+      "import": {
+        "types": "./dist/formats/plain-year-month.d.mts",
+        "default": "./dist/formats/plain-year-month.mjs"
+      },
+      "require": {
+        "types": "./dist/formats/plain-year-month.d.cts",
+        "default": "./dist/formats/plain-year-month.cjs"
+      }
     },
     "./zoned-date-time": {
-      "types": "./dist/formats/zoned-date-time.d.mts",
-      "import": "./dist/formats/zoned-date-time.mjs",
-      "require": "./dist/formats/zoned-date-time.cjs"
+      "import": {
+        "types": "./dist/formats/zoned-date-time.d.mts",
+        "default": "./dist/formats/zoned-date-time.mjs"
+      },
+      "require": {
+        "types": "./dist/formats/zoned-date-time.d.cts",
+        "default": "./dist/formats/zoned-date-time.cjs"
+      }
     },
     "./object": {
-      "types": "./dist/formats/object.d.mts",
-      "import": "./dist/formats/object.mjs",
-      "require": "./dist/formats/object.cjs"
+      "import": {
+        "types": "./dist/formats/object.d.mts",
+        "default": "./dist/formats/object.mjs"
+      },
+      "require": {
+        "types": "./dist/formats/object.d.cts",
+        "default": "./dist/formats/object.cjs"
+      }
     },
     "./date": {
-      "types": "./dist/formats/date.d.mts",
-      "import": "./dist/formats/date.mjs",
-      "require": "./dist/formats/date.cjs"
+      "import": {
+        "types": "./dist/formats/date.d.mts",
+        "default": "./dist/formats/date.mjs"
+      },
+      "require": {
+        "types": "./dist/formats/date.d.cts",
+        "default": "./dist/formats/date.cjs"
+      }
     }
   },
   "scripts": {