diff --git a/env-to-object/env-to-object-tests.ts b/env-to-object/env-to-object-tests.ts
new file mode 100644
index 0000000000..e2c1fd4e53
--- /dev/null
+++ b/env-to-object/env-to-object-tests.ts
@@ -0,0 +1,35 @@
+import * as envToObject from 'env-to-object';
+
+const map = {
+    'NODE_ENV': {
+        'keypath': 'env',
+        'type': 'string'
+    },
+    'PORT': {
+        'keypath': 'server.port',
+        'type': 'number'
+    },
+    'SSL': {
+        'keypath': 'server.ssl',
+        'type': 'boolean'
+    },
+    'LOG_LEVEL': {
+        'keypath': 'logger.level',
+        'type': 'string'
+    },
+    'INT': {
+        'keypath': 'int',
+        'type': 'integer',
+        'radix': '2'
+    }
+};
+
+const result1:any = envToObject(map);
+const result2:any = envToObject(map, {
+    parsers: {
+        'my-custom-type': (str: string, opts: any) => {
+            let foo: any = JSON.parse(str);
+            return foo;
+        }
+    }
+});
diff --git a/env-to-object/index.d.ts b/env-to-object/index.d.ts
new file mode 100644
index 0000000000..1ec7a3c994
--- /dev/null
+++ b/env-to-object/index.d.ts
@@ -0,0 +1,39 @@
+// Type definitions for env-to-object 1.1
+// Project: https://github.com/kgryte/node-env-to-object#readme
+// Definitions by: TANAKA Koichi <https://github.com/MugeSo>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare namespace env {
+    export interface Mappings {
+        [enviromentVariableName: string]: Mapping;
+    }
+
+    export type Mapping = IntegerMapping | BooleanMapping | GenericMapping;
+
+    interface GenericMapping {
+        keypath: string;
+        type?: string;
+        [opt: string]: any;
+    }
+
+    interface IntegerMapping extends GenericMapping {
+        type: "integer";
+        radix: number;
+    }
+
+    interface BooleanMapping {
+        type: "boolean";
+        strict: boolean;
+    }
+
+    export interface Parsers {
+        [parserName: string]: (str: string, opts: any) => any;
+    }
+
+    export interface Options {
+        parsers: Parsers;
+    }
+}
+
+declare  function env(map: env.Mappings, options?: env.Options): any;
+export = env;
diff --git a/env-to-object/tsconfig.json b/env-to-object/tsconfig.json
new file mode 100644
index 0000000000..68efe0c7ca
--- /dev/null
+++ b/env-to-object/tsconfig.json
@@ -0,0 +1,20 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "target": "es6",
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "env-to-object-tests.ts"
+    ]
+}
diff --git a/env-to-object/tslint.json b/env-to-object/tslint.json
new file mode 100644
index 0000000000..377cc837d4
--- /dev/null
+++ b/env-to-object/tslint.json
@@ -0,0 +1 @@
+{ "extends": "../tslint.json" }