Add shuffle-seed typings (#29798)

* Add shuffle-seed typings

* Add strictFunctionTypes tsconfig param, fix linter errors

* Improve shuffle-seed type definition, use generics

types/shuffle-seed/index.d.ts

@@ -0,0 +1,9 @@
+// Type definitions for shuffle-seed 1.1
+// Project: https://github.com/webcaetano/shuffle-seed#readme
+// Definitions by: Leonardo Donelli <https://github.com/LeartS>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export as namespace shuffleSeed;
+
+export function shuffle<T>(arr: ReadonlyArray<T>, seed: any): T[];
+export function unshuffle<T>(arr: ReadonlyArray<T>, seed: any): T[];

types/shuffle-seed/shuffle-seed-tests.ts

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+import { shuffle, unshuffle } from "shuffle-seed";
+
+const originalArray = [1, "hello world", 132.81];
+const shuffled1 = shuffle(originalArray, "randomseed");
+const shuffled2 = shuffle(originalArray, "randomseed");
+const unshuffled = unshuffle(shuffled2, "randomseed");
+// shuffled1 === shuffled2
+// unshuffled === originalArray

types/shuffle-seed/tsconfig.json

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

types/shuffle-seed/tslint.json

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