diff --git a/.npmignore b/.npmignore
deleted file mode 100644
index 59f49563..00000000
--- a/.npmignore
+++ /dev/null
@@ -1,14 +0,0 @@
-.git*
-docs/
-test/
-support/
-component.json
-components/
-build/
-lib-cov/
-coverage/
-.travis.yml
-.mailmap
-Makefile
-*.swp
-.DS_Store
diff --git a/package-lock.json b/package-lock.json
index d5ef9e2e..c2c162df 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -30,7 +30,7 @@
         "typescript": "~5.7.3"
       },
       "engines": {
-        "node": ">=12"
+        "node": ">=18"
       }
     },
     "node_modules/@75lb/deep-merge": {
diff --git a/package.json b/package.json
index b10ffb88..a44f2a95 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,12 @@
     "testing",
     "chai"
   ],
+  "files": [
+    "chai.js",
+    "index.js",
+    "lib",
+    "register-*.js"
+  ],
   "homepage": "http://chaijs.com",
   "license": "MIT",
   "contributors": [