Fix lint package module outputs

Align the @fedify/lint package metadata with the files produced by
tsdown.

This makes the ESM build emit .js and .d.ts files instead of .mjs and
.d.mts, and updates package.json to point at the correct type entry
points.

Author: dahlia

CHANGES.md

@@ -8,6 +8,13 @@ Version 2.0.10
 
 To be released.
 
+### @fedify/lint
+
+ -  Fixed the published ESM output paths for `@fedify/lint` so the package
+    exports and type declarations point to the actual files generated by
+    `tsdown`.  This restores imports such as `import fedifyLint from
+    "@fedify/lint"` in documentation examples and other TypeScript consumers.
+
 
 Version 2.0.9
 -------------

packages/lint/package.json

@@ -32,9 +32,14 @@
   "type": "module",
   "main": "./dist/index.cjs",
   "module": "./dist/index.js",
-  "types": "./dist/index.d.cts",
+  "types": "./dist/index.d.ts",
   "exports": {
     ".": {
+      "types": {
+        "import": "./dist/index.d.ts",
+        "require": "./dist/index.d.cts",
+        "default": "./dist/index.d.ts"
+      },
       "import": "./dist/index.js",
       "require": "./dist/index.cjs"
     },

packages/lint/tsdown.config.ts

@@ -5,4 +5,8 @@ export default defineConfig({
   dts: { compilerOptions: { isolatedDeclarations: true, declaration: true } },
   format: ["esm", "cjs"],
   platform: "node",
+  outExtensions({ format }) {
+    if (format === "cjs") return { js: ".cjs", dts: ".d.cts" };
+    return { js: ".js", dts: ".d.ts" };
+  },
 });