Add new definition: react-hyperscript (#20693)

* Add new package: react-hyperscript

* Type of function should be declared by function keyword...

* Add a workaround

tsc does not allow `export =`ing function because ES spec does not allow that.
But react-hyperscript does that.
So this workaround is required.

types/react-hyperscript/index.d.ts

@@ -0,0 +1,17 @@
+// Type definitions for react-hyperscript 3.0
+// Project: https://github.com/mlmorg/react-hyperscript
+// Definitions by: tock203 <https://github.com/tock203>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.3
+
+import { ComponentClass, StatelessComponent, ReactElement } from 'react';
+
+declare namespace h {}
+
+declare function h<P>(
+    componentOrTag: ComponentClass<P> | StatelessComponent<P> | string,
+    properties?: P,
+    children?: ReadonlyArray<ReactElement<any>> | string
+): ReactElement<P>;
+
+export = h;

types/react-hyperscript/react-hyperscript-tests.ts

@@ -0,0 +1,31 @@
+import * as React from 'react';
+import * as h from 'react-hyperscript';
+
+class SomeComponent extends React.Component {
+    render() {
+        return React.createElement('div');
+    }
+}
+
+const StatelessComponent = () => React.createElement('div');
+
+class MainComponent extends React.Component {
+    render() {
+        return h('div.example', [
+            h('h1#heading', 'This is hyperscript'),
+            h('h2', 'creating React.js markup'),
+            h(SomeComponent, {foo: 'bar'}, [
+                h('li', [
+                    h('a', {href: 'http://whatever.com'}, 'One list item')
+                ]),
+                h('li', 'Another list item')
+            ]),
+            h(StatelessComponent, {foo: 'bar'}, [
+                h('li', [
+                    h('a', {href: 'http://whatever.com'}, 'One list item')
+                ]),
+                h('li', 'Another list item')
+            ])
+        ]);
+    }
+}

types/react-hyperscript/tsconfig.json

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

types/react-hyperscript/tslint.json

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