[#94] Backend

https://project.mdnd-it.cc/work_packages/94

SerpentRace_Backend/node_modules/browser-or-node/src/index.d.ts

@@ -0,0 +1,5 @@
+export declare const isBrowser: boolean;
+export declare const isWebWorker: boolean;
+export declare const isNode: boolean;
+export declare const isJsDom: boolean;
+export declare const isDeno: boolean;

SerpentRace_Backend/node_modules/browser-or-node/src/index.js

@@ -0,0 +1,29 @@
+const isBrowser =
+  typeof window !== "undefined" && typeof window.document !== "undefined";
+
+const isNode =
+  typeof process !== "undefined" &&
+  process.versions != null &&
+  process.versions.node != null;
+
+const isWebWorker =
+  typeof self === "object" &&
+  self.constructor &&
+  self.constructor.name === "DedicatedWorkerGlobalScope";
+
+/**
+ * @see https://github.com/jsdom/jsdom/releases/tag/12.0.0
+ * @see https://github.com/jsdom/jsdom/issues/1537
+ */
+const isJsDom =
+  (typeof window !== "undefined" && window.name === "nodejs") ||
+  (typeof navigator !== "undefined" &&
+    (navigator.userAgent.includes("Node.js") ||
+      navigator.userAgent.includes("jsdom")));
+
+const isDeno =
+  typeof Deno !== "undefined" &&
+  typeof Deno.version !== "undefined" &&
+  typeof Deno.version.deno !== "undefined";
+
+export { isBrowser, isWebWorker, isNode, isJsDom, isDeno };