[tsscmp] introduce typings (#36370)

types/tsscmp/index.d.ts

@@ -0,0 +1,9 @@
+// Type definitions for tsscmp 1.0
+// Project: https://github.com/suryagh/tsscmp#readme
+// Definitions by: Gareth Jones <https://github.com/g-rath>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export = timeSafeCompare;
+
+declare function timeSafeCompare(a: number, b: number): boolean;
+declare function timeSafeCompare(a: string, b: string): boolean;

types/tsscmp/tsconfig.json

@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "tsscmp-tests.ts"
+    ]
+}

types/tsscmp/tslint.json

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

types/tsscmp/tsscmp-tests.ts

@@ -0,0 +1,26 @@
+import timeSafeCompare = require('tsscmp');
+
+timeSafeCompare(); // $ExpectError
+timeSafeCompare(''); // $ExpectError
+timeSafeCompare(1); // $ExpectError
+
+timeSafeCompare('', ''); // $ExpectType boolean
+timeSafeCompare(1, 1); // $ExpectType boolean
+
+timeSafeCompare('', 1); // $ExpectError
+timeSafeCompare(1, ''); // $ExpectError
+
+timeSafeCompare({}, {}); // $ExpectError
+timeSafeCompare([], []); // $ExpectError
+
+timeSafeCompare({}, ''); // $ExpectError
+timeSafeCompare([], ''); // $ExpectError
+
+timeSafeCompare([], 1); // $ExpectError
+timeSafeCompare({}, 1); // $ExpectError
+
+timeSafeCompare('', {}); // $ExpectError
+timeSafeCompare('', []); // $ExpectError
+
+timeSafeCompare(1, []); // $ExpectError
+timeSafeCompare(1, {}); // $ExpectError