diff --git a/types/graphql-deduplicator/graphql-deduplicator-tests.ts b/types/graphql-deduplicator/graphql-deduplicator-tests.ts
new file mode 100644
index 0000000000..7da4764de2
--- /dev/null
+++ b/types/graphql-deduplicator/graphql-deduplicator-tests.ts
@@ -0,0 +1,4 @@
+import { deflate, inflate } from 'graphql-deduplicator';
+
+deflate({});
+inflate({});
diff --git a/types/graphql-deduplicator/index.d.ts b/types/graphql-deduplicator/index.d.ts
new file mode 100644
index 0000000000..079b7c31be
--- /dev/null
+++ b/types/graphql-deduplicator/index.d.ts
@@ -0,0 +1,13 @@
+// Type definitions for graphql-deduplicator 2.0
+// Project: https://github.com/gajus/graphql-deduplicator#readme
+// Definitions by: Luis Fernando Alvarez D. <https://github.com/lfades>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
+
+export function deflate(response: object): {
+    [key: string]: any;
+};
+
+export function inflate(response: object): {
+    [key: string]: any;
+};
diff --git a/types/graphql-deduplicator/tsconfig.json b/types/graphql-deduplicator/tsconfig.json
new file mode 100644
index 0000000000..2254638503
--- /dev/null
+++ b/types/graphql-deduplicator/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "graphql-deduplicator-tests.ts"
+    ]
+}
diff --git a/types/graphql-deduplicator/tslint.json b/types/graphql-deduplicator/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/graphql-deduplicator/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }