Add tsconfig.d.ts.json to .npmignore.

Author: octet-stream

.npmignore

@@ -25,4 +25,5 @@ pnpm-lock.yaml
 /tsconfig.esm.json
 /tsconfig.cjs.json
 /tsconfig.eslint.json
+/tsconfig.d.ts.json
 lib/**/*.ts

package.json

@@ -32,7 +32,7 @@
     "test": "ava --fail-fast",
     "cleanup": "npx rimraf @type \"lib/**/*.js\"",
     "prepare": "npm run cleanup && npm run build",
-    "postinstall": "husky install",
+    "_postinstall": "husky install",
     "prepublishOnly": "pinst --disable",
     "postpublish": "pinst --enable"
   },