feat(environment): detect the current working environment of a project

lib/environment/environment.ts

@@ -0,0 +1,48 @@
+import { env } from "./env";
+import { isUndefined } from "../utils";
+
+type UrbexContext = "browser" | "node";
+
+export class Environment {
+    private _context: UrbexContext;
+
+    constructor() {
+        this._context = this.detectContext();
+    }
+
+    private detectContext(): UrbexContext {
+        if (!isUndefined(window) && !isUndefined(window.document)) {
+            return "browser";
+        }
+
+        if (
+            !isUndefined(process) &&
+            process.versions &&
+            process.versions.node
+        ) {
+            return "node";
+        }
+
+        throw new Error("Could not detect environment context");
+    }
+
+    get context(): UrbexContext {
+        return this._context;
+    }
+
+    get isBrowser(): boolean {
+        return this.context === "browser";
+    }
+
+    get isNode(): boolean {
+        return this.context === "node";
+    }
+
+    get isDevelopment(): boolean {
+        return env.get("NODE_ENV") === "development";
+    }
+
+    get isProduction(): boolean {
+        return env.get("NODE_ENV") === "production";
+    }
+}

lib/environment/index.ts

@@ -0,0 +1,2 @@
+export * from "./environment";
+export * from "./env";