diff --git a/types/npm-cache-filename/index.d.ts b/types/npm-cache-filename/index.d.ts
new file mode 100644
index 0000000000..7d06a51722
--- /dev/null
+++ b/types/npm-cache-filename/index.d.ts
@@ -0,0 +1,9 @@
+// Type definitions for npm-cache-filename 1.0
+// Project: https://github.com/npm/npm-cache-filename
+// Definitions by: Florian Keller <https://github.com/ffflorian>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare function cf(root: string): (url: string) => string;
+declare function cf(root: string, url: string): string;
+
+export = cf;
diff --git a/types/npm-cache-filename/npm-cache-filename-tests.ts b/types/npm-cache-filename/npm-cache-filename-tests.ts
new file mode 100644
index 0000000000..1b45a896f8
--- /dev/null
+++ b/types/npm-cache-filename/npm-cache-filename-tests.ts
@@ -0,0 +1,6 @@
+import cf = require('npm-cache-filename');
+
+cf('/tmp/cache', 'https://registry.npmjs.org:1234/foo/bar'); // $ExpectType string
+
+const getFile = cf('/tmp/cache');
+getFile('https://registry.npmjs.org:1234/foo/bar'); // $ExpectType string
diff --git a/types/npm-cache-filename/tsconfig.json b/types/npm-cache-filename/tsconfig.json
new file mode 100644
index 0000000000..130b16249c
--- /dev/null
+++ b/types/npm-cache-filename/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "npm-cache-filename-tests.ts"
+    ]
+}
diff --git a/types/npm-cache-filename/tslint.json b/types/npm-cache-filename/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/npm-cache-filename/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }