feat: Add typings for universalify (#41546)

Signed-off-by: Richie Bendall <richiebendall@gmail.com>

types/universalify/index.d.ts

@@ -0,0 +1,7 @@
+// Type definitions for universalify 0.1
+// Project: https://github.com/RyanZim/universalify#readme
+// Definitions by: Richie Bendall <https://github.com/Richienb>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export function fromCallback(fn: (...args: any[]) => any): (...args: any[]) => Promise<any> | void;
+export function fromPromise(fn: (...args: any[]) => any): (...args: any[]) => Promise<any> | void;

types/universalify/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",
+        "universalify-tests.ts"
+    ]
+}

types/universalify/tslint.json

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

types/universalify/universalify-tests.ts

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+import universalify = require("universalify");
+
+universalify.fromCallback(() => { }); // $ExpectType (...args: any[]) => void | Promise<any>
+universalify.fromPromise(() => { }); // $ExpectType (...args: any[]) => void | Promise<any>