Added type definitions for use-combined-reducers (#38647)

* Added type definitions for use-combined-reducers

* fixed errors

* fixed typo

* deleted typescript version declaration

* defined the same typescript version as react

types/use-combined-reducers/index.d.ts

@@ -0,0 +1,9 @@
+// Type definitions for use-combined-reducers 1.0
+// Project: https://github.com/the-road-to-learn-react/use-combined-reducers#readme
+// Definitions by: kwdowik <https://github.com/kwdowik>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.8
+
+import * as React from 'react';
+
+export default function useCombinedReducers<T, A>(combinedReducers: Record<keyof T, [T[keyof T], React.Dispatch<A>]>): [T, (action: A) => void];

types/use-combined-reducers/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "use-combined-reducers-tests.ts"
+    ]
+}

types/use-combined-reducers/tslint.json

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

types/use-combined-reducers/use-combined-reducers-tests.ts

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+import useCombinedReducers from 'use-combined-reducers';
+
+useCombinedReducers<{ a: number; b: any }, () => {}>({
+    a: ['', () => { }],
+    b: ['', () => { }],
+});