Move types to dedicated declaration file

index.d.ts

@@ -1,2 +1,2 @@
-import Long from './umd/index.js';
-export default Long; // compatible with `import Long from "long"`
+import { Long } from './types.js';
+export default Long;

package.json

@@ -33,18 +33,22 @@
   },
   "scripts": {
     "build": "esm2umd Long index.js > umd/index.js",
-    "test": "node tests"
+    "test": "npm run test:unit && npm run test:typescript",
+    "test:unit": "node tests",
+    "test:typescript": "tsc --project tests/typescript/tsconfig.esnext.json && tsc --project tests/typescript/tsconfig.nodenext.json && tsc --project tests/typescript/tsconfig.commonjs.json"
   },
   "files": [
     "index.js",
     "index.d.ts",
     "umd/index.js",
     "umd/index.d.ts",
     "umd/package.json",
+    "types.d.ts",
     "LICENSE",
     "README.md"
   ],
   "devDependencies": {
-    "esm2umd": "^0.2.1"
+    "esm2umd": "^0.2.2",
+    "typescript": "^5.7.3"
   }
 }

tests/typescript/test-import.ts

@@ -0,0 +1,5 @@
+import Long from '../../index.js';
+
+Long.fromValue(1);
+
+export default Long;

tests/typescript/test-require.ts

@@ -0,0 +1,5 @@
+import Long = require("../../umd/index.js");
+
+Long.fromValue(1);
+
+export default Long;

tests/typescript/tsconfig.base.json

@@ -0,0 +1,6 @@
+{
+  "compilerOptions": {
+    "target": "ESNext",
+    "noEmit": true
+  }
+}

tests/typescript/tsconfig.commonjs.json

@@ -0,0 +1,8 @@
+{
+  "extends": "./tsconfig.base.json",
+  "compilerOptions": {
+    "module": "CommonJS",
+    "moduleResolution": "node10"
+  },
+  "include": ["./test-require.ts"]
+}

tests/typescript/tsconfig.esnext.json

@@ -0,0 +1,7 @@
+{
+  "extends": "./tsconfig.base.json",
+  "compilerOptions": {
+    "module": "ESNext",
+  },
+  "include": ["./test-import.ts"]
+}

tests/typescript/tsconfig.json

@@ -0,0 +1,3 @@
+{
+  "extends": "./tsconfig.commonjs.json"
+}

tests/typescript/tsconfig.nodenext.json

@@ -0,0 +1,8 @@
+{
+  "extends": "./tsconfig.base.json",
+  "compilerOptions": {
+    "module": "NodeNext",
+    "moduleResolution": "nodenext",
+  },
+  "include": ["./test-import.ts"]
+}