diff --git a/types/minimal-bit-array/index.d.ts b/types/minimal-bit-array/index.d.ts
new file mode 100644
index 0000000000..f5172fbd47
--- /dev/null
+++ b/types/minimal-bit-array/index.d.ts
@@ -0,0 +1,26 @@
+// Type definitions for minimal-bit-array 1.0
+// Project: https://github.com/mikolalysenko/minimal-bit-array
+// Definitions by: Olegs Jeremejevs <https://github.com/jeremejevs>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare namespace BitArray {
+  interface BitArrayJSON {
+    bits: number[];
+    length: number;
+  }
+}
+
+declare class BitArray {
+  static fromJSON(bitArrayJSON: BitArray.BitArrayJSON): BitArray;
+
+  length: number;
+  bits: Uint32Array;
+
+  constructor(length: number);
+
+  get(index: number): boolean;
+  set(index: number, value: any): boolean;
+  toJSON(): BitArray.BitArrayJSON;
+}
+
+export = BitArray;
diff --git a/types/minimal-bit-array/minimal-bit-array-tests.ts b/types/minimal-bit-array/minimal-bit-array-tests.ts
new file mode 100644
index 0000000000..135b2908f2
--- /dev/null
+++ b/types/minimal-bit-array/minimal-bit-array-tests.ts
@@ -0,0 +1,9 @@
+import * as BitArray from "minimal-bit-array";
+
+new BitArray('abc'); // $ExpectError
+const bitArray: BitArray = new BitArray(123);
+bitArray.get(12); // $ExpectType boolean
+bitArray.set(34, true); // $ExpectType boolean
+bitArray.set(34, 'someTruthyValue');
+const json: BitArray.BitArrayJSON = bitArray.toJSON();
+const bitArrayClone: BitArray = BitArray.fromJSON(json);
diff --git a/types/minimal-bit-array/tsconfig.json b/types/minimal-bit-array/tsconfig.json
new file mode 100644
index 0000000000..6858a768bd
--- /dev/null
+++ b/types/minimal-bit-array/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true,
+        "strictFunctionTypes": true
+    },
+    "files": [
+        "index.d.ts",
+        "minimal-bit-array-tests.ts"
+    ]
+}
diff --git a/types/minimal-bit-array/tslint.json b/types/minimal-bit-array/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/minimal-bit-array/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }