Add types for the stringify-author package (#45835)

types/stringify-author/index.d.ts

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+// Type definitions for stringify-author 0.1
+// Project: https://github.com/jonschlinkert/stringify-author
+// Definitions by: Manuel Thalmann <https://github.com/manuth>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+import { Author } from "parse-author";
+
+/**
+ * Converts an `author` to a human-readable string.
+ *
+ * @param author
+ * The author to stringify.
+ *
+ * @returns
+ * A string representing the `author`.
+ */
+declare function stringify(author: Author): string;
+
+export = stringify;

types/stringify-author/stringify-author-tests.ts

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+import stringify = require("stringify-author");
+
+stringify({});
+stringify({ name: "", email: "", url: "" });
+
+// $ExpectType string
+stringify({});

types/stringify-author/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",
+        "stringify-author-tests.ts"
+    ]
+}

types/stringify-author/tslint.json

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