diff --git a/types/node-xlsx/index.d.ts b/types/node-xlsx/index.d.ts
new file mode 100644
index 0000000000..bd500d8a4e
--- /dev/null
+++ b/types/node-xlsx/index.d.ts
@@ -0,0 +1,35 @@
+// Type definitions for node-xlsx 0.12
+// Project: https://github.com/mgcrea/node-xlsx#readme
+// Definitions by: chenc <https://github.com/cWatermelon>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 3.0
+
+/**
+ * parsing a xlsx from file/buffer, outputs an object of worksheets
+ * @param mixed file path or buffer
+ * @param options options is for xlsx
+ * @returns worksheets data, like: { name: 'worksheets', data: [[1,2,3],['1', '2','word']] }
+ */
+export declare function parse(
+    mixed: string | ArrayBuffer,
+    options?: {}
+): Array<{
+    name: string;
+    data: Array<[]>;
+}>;
+
+/**
+ * building a xlsx
+ * @param worksheets worksheets data, like:{ name: 'worksheets', data: [[1,2,3],['1', '2','word']] }
+ * @param options spannig multiple rows A1:A4
+ * @returns returns a buffer of worksheets
+ */
+export declare function build(
+    worksheets: Array<{ name: string; data: any[][] }>,
+    options?: {}
+): ArrayBuffer;
+declare const _default: {
+    parse: typeof parse;
+    build: typeof build;
+};
+export default _default;
diff --git a/types/node-xlsx/node-xlsx-tests.ts b/types/node-xlsx/node-xlsx-tests.ts
new file mode 100644
index 0000000000..f9dffcad47
--- /dev/null
+++ b/types/node-xlsx/node-xlsx-tests.ts
@@ -0,0 +1,8 @@
+import { build } from 'node-xlsx';
+const data = [
+    [1, 2, 3],
+    [true, false, null, 'sheetjs'],
+    ['foo', 'bar', new Date('2014-02-19T14:30Z'), '0.3'],
+    ['baz', null, 'qux'],
+];
+const buffer = build([{ name: 'mySheetName', data }]);
diff --git a/types/node-xlsx/tsconfig.json b/types/node-xlsx/tsconfig.json
new file mode 100644
index 0000000000..915d266284
--- /dev/null
+++ b/types/node-xlsx/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",
+        "node-xlsx-tests.ts"
+    ]
+}
diff --git a/types/node-xlsx/tslint.json b/types/node-xlsx/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/node-xlsx/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }