Add type definitions for RE:DOM 3.6 (#20469)

Introduce new type definition package into repository which adds type
definitions for a library called RE:DOM. These type definitions are made
against RE:DOM version 3.6.2.

types/redom/index.d.ts

@@ -0,0 +1,69 @@
+// Type definitions for redom 3.6
+// Project: https://github.com/redom/redom/
+// Definitions by: Rauli Laine <https://github.com/RauliL>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
+
+export type RedomElement = Node | RedomComponent;
+export type RedomQuery = string | RedomElement;
+export type RedomMiddleware = (el: HTMLElement) => void;
+export type RedomQueryArgumentValue = RedomElement | string | number | { [key: string]: any } | RedomMiddleware;
+export type RedomQueryArgument = RedomQueryArgumentValue | RedomQueryArgumentValue[];
+
+export interface RedomComponent {
+    el: HTMLElement;
+}
+
+export interface RedomComponentConstructor {
+    new (): RedomComponent;
+}
+
+export class List implements RedomComponent {
+    el: HTMLElement;
+
+    constructor(parent: RedomQuery, View: RedomComponentConstructor, key?: string, initData?: any);
+
+    update(data: any[], context?: any): void;
+}
+
+export class Place implements RedomComponent {
+    el: HTMLElement;
+
+    constructor(View: RedomComponentConstructor, initData?: any);
+
+    update(visible: boolean, data?: any): void;
+}
+
+export class Router implements RedomComponent {
+    el: HTMLElement;
+
+    constructor(parent: RedomQuery, Views: RouterDictionary, initData?: any);
+
+    update(route: string, data?: any): void;
+}
+
+export interface RouterDictionary {
+    [key: string]: RedomComponentConstructor;
+}
+
+export function html(query: RedomQuery, ...args: RedomQueryArgument[]): HTMLElement;
+export function el(query: RedomQuery, ...args: RedomQueryArgument[]): HTMLElement;
+
+export function list(parent: RedomQuery, View: RedomComponentConstructor, key?: string, initData?: any): List;
+
+export function mount(parent: RedomElement, child: RedomElement, before?: RedomElement): RedomElement;
+export function unmount(parent: RedomElement, child: RedomElement): RedomElement;
+
+export function place(View: RedomComponentConstructor, initData?: any): Place;
+
+export function router(parent: RedomQuery, Views: RouterDictionary, initData?: any): Router;
+
+export function setAttr(view: RedomElement, arg1: string | object, arg2?: string): void;
+
+export function setStyle(view: RedomElement, arg1: string | object, arg2?: string): void;
+
+export function setChildren(parent: RedomElement, children: RedomElement[]): void;
+
+export function svg(query: RedomQuery, ...args: RedomQueryArgument[]): SVGElement;
+
+export function text(str: string): Text;

types/redom/redom-tests.ts

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+import * as redom from 'redom';
+
+const el1: HTMLElement = redom.el('');
+const el2: HTMLElement = redom.el('p', 'Hello, World!', (el: HTMLElement) => { el.setAttribute('ok', '!'); });
+const el3: HTMLElement = redom.html('p', 2, { color: 'red' });
+
+redom.mount(document.body, el1);
+redom.mount(document.body, el2, el1);
+redom.unmount(document.body, el1);
+
+redom.setAttr(el3, 'ok', '!');
+redom.setAttr(el3, { ok: '!' });
+redom.setStyle(el3, { color: 'blue' });
+redom.setChildren(el1, [el2, el3]);
+
+redom.mount(document.body, redom.text('Hello, World!'));

types/redom/tsconfig.json

@@ -0,0 +1,25 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6",
+            "dom"
+        ],
+        "target": "es6",
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "redom-tests.ts"
+    ]
+}

types/redom/tslint.json

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