feat(types): Add typings for "arr-union" package

types/arr-union/arr-union-tests.ts

@@ -0,0 +1,7 @@
+import union = require('arr-union');
+
+// $ExpectType string[]
+union(['a'], ['b', 'c'], ['d', 'e', 'f']);
+
+// $ExpectType number[]
+union([1, 1], [2, 3]);

types/arr-union/index.d.ts

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+// Type definitions for arr-union 3.1
+// Project: https://github.com/jonschlinkert/arr-union
+// Definitions by: mrmlnc <https://github.com/mrmlnc>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare function union<T>(...arrays: Array<ArrayLike<T>>): T[];
+
+export = union;

types/arr-union/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",
+        "arr-union-tests.ts"
+    ]
+}

types/arr-union/tslint.json

@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }