diff --git a/types/minimalistic-assert/index.d.ts b/types/minimalistic-assert/index.d.ts
new file mode 100644
index 0000000000..015f27664c
--- /dev/null
+++ b/types/minimalistic-assert/index.d.ts
@@ -0,0 +1,12 @@
+// Type definitions for minimalistic-assert 1.0
+// Project: https://github.com/calvinmetcalf/minimalistic-assert
+// Definitions by: Junxiao Shi <https://github.com/yoursunny>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare function assert(val: any, msg?: string): void;
+
+declare namespace assert {
+    function equal<T>(l: T, r: T, msg?: string): void;
+}
+
+export = assert;
diff --git a/types/minimalistic-assert/minimalistic-assert-tests.ts b/types/minimalistic-assert/minimalistic-assert-tests.ts
new file mode 100644
index 0000000000..056dec7106
--- /dev/null
+++ b/types/minimalistic-assert/minimalistic-assert-tests.ts
@@ -0,0 +1,10 @@
+import assert = require("minimalistic-assert");
+
+assert(true);
+assert(false, "error");
+assert("yes");
+assert(0, "error");
+
+assert.equal(1, 1);
+assert.equal(2, 1, "error");
+assert.equal("ok", "ok");
diff --git a/types/minimalistic-assert/tsconfig.json b/types/minimalistic-assert/tsconfig.json
new file mode 100644
index 0000000000..9ce156034f
--- /dev/null
+++ b/types/minimalistic-assert/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",
+        "minimalistic-assert-tests.ts"
+    ]
+}
diff --git a/types/minimalistic-assert/tslint.json b/types/minimalistic-assert/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/minimalistic-assert/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }