Add types for capitalize (#16156)

Add an optional extended description…

types/capitalize/capitalize-tests.ts

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+import * as capitalize from "capitalize";
+import { words } from "capitalize";
+
+capitalize("united states");
+
+capitalize.words("united states");
+
+capitalize.words('hello-cañapolísas');
+
+capitalize.words("it's a nice day");
+
+words("united states");

types/capitalize/index.d.ts

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+// Type definitions for capitalize 1.0
+// Project: https://github.com/grncdr/js-capitalize
+// Definitions by: Frederick Fogerty <https://github.com/frederickfogerty/>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
+
+/**
+ * Capitalize the first letter of a string
+ * @param input the string to capitalize
+ */
+declare function capitalize(input: string): string;
+declare namespace capitalize {
+	/**
+	 * Capitalize each word in a string
+	 * @param input the string to capitalize
+	 */
+	function words(input: string): string;
+}
+export = capitalize;

types/capitalize/tsconfig.json

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

types/capitalize/tslint.json

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