Add type definitions for semver-compare (#19451)

* Initial type definitions for semver-compare

* Fix definitions

* Fix tslint errors

types/semver-compare/index.d.ts

@@ -0,0 +1,8 @@
+// Type definitions for semver-compare 1.0
+// Project: https://github.com/substack/semver-compare
+// Definitions by: Kovács Vince <https://github.com/vincekovacs>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare function semverCompare<T>(a: T, b: T): number;
+
+export = semverCompare;

types/semver-compare/semver-compare-tests.ts

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+import SemverCompare = require("semver-compare");
+
+const versions = [
+    "1.2.3",
+    "4.11.6",
+    "4.2.0",
+    "1.5.19",
+    "1.5.5",
+    "4.1.3",
+    "2.3.1",
+    "10.5.5",
+    "11.3.0",
+];
+versions.sort(SemverCompare).join("\n");

types/semver-compare/tsconfig.json

@@ -0,0 +1,22 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "semver-compare-tests.ts"
+    ]
+}

types/semver-compare/tslint.json

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