Adding @testing-library/jest-dom type definitions

types/testing-library__jest-dom/index.d.ts

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+// Type definitions for @testing-library/jest-dom 4.0
+// Project: https://github.com/testing-library/jest-dom
+// Definitions by: Damien Senger <https://github.com/hiwelo>
+//                 Łukasz Fiszer <https://github.com/lukaszfiszer>
+//                 Revath S Kumar <https://github.com/revathskumar>
+//                 Ernesto García <https://github.com/gnapse>
+//                 Weyert de Boer <https://github.com/weyert>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 3.0
+
+declare namespace jest {
+    interface Matchers<R> {
+        /**
+         * @deprecated
+         */
+        toBeInTheDOM(container?: HTMLElement | SVGElement): R;
+        toBeInTheDocument(): R;
+        toBeVisible(): R;
+        toBeEmpty(): R;
+        toBeDisabled(): R;
+        toBeEnabled(): R;
+        toBeInvalid(): R;
+        toBeRequired(): R;
+        toBeValid(): R;
+        toContainElement(element: HTMLElement | SVGElement | null): R;
+        toContainHTML(htmlText: string): R;
+        toHaveAttribute(attr: string, value?: any): R;
+        toHaveClass(...classNames: string[]): R;
+        toHaveFocus(): R;
+        toHaveFormValues(expectedValues: { [name: string]: any }): R;
+        toHaveStyle(css: string): R;
+        toHaveTextContent(text: string | RegExp, options?: { normalizeWhitespace: boolean }): R;
+        toHaveValue(value?: string | string[] | number): R;
+    }
+}

types/testing-library__jest-dom/testing-library__jest-dom-tests.ts

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+import 'jest';
+import '@testing-library/jest-dom';
+
+declare const expect: jest.Expect;
+
+const element = document.createElement('div');
+expect(element).toBeInTheDOM();
+expect(element).toBeInTheDocument();
+expect(element).toBeVisible();
+expect(element).toBeEmpty();
+expect(element).toBeDisabled();
+expect(element).toBeEnabled();
+expect(element).toBeInvalid();
+expect(element).toBeRequired();
+expect(element).toBeValid();
+expect(element).toContainElement(null);
+expect(element).toContainHTML('<div>Test</div>');
+expect(element).toHaveAttribute('id');
+expect(element).toHaveClass('is-active');
+expect(element).toHaveFocus();
+expect(element).toHaveFormValues({ name: 'Name' });
+expect(element).toHaveStyle('span { font-weight: bold; }');
+expect(element).toHaveStyle('span { font-weight: bold; }');
+expect(element).toHaveTextContent('Example');
+expect(element).toHaveValue('Test');

types/testing-library__jest-dom/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": ["dom", "es6"],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": ["../"],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "paths": {
+            "@testing-library/jest-dom": [
+                "testing-library__jest-dom"
+            ]
+    },
+    "files": ["index.d.ts", "testing-library__jest-dom-tests.ts"]
+}

types/testing-library__jest-dom/tslint.json

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+{ "extends": "dtslint/dt.json" }