Added flake.nix development shell

.gitignore

@@ -1,3 +1,5 @@
 node_modules
 package-lock.json
-libs/Cesium
+yarn.lock
+
+libs/Cesium

flake.nix

@@ -0,0 +1,58 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { nixpkgs, flake-utils, ... }:
+    flake-utils.lib.eachDefaultSystem
+      (system:
+        let
+          overlays = [
+            (self: super: {
+              nodejs = super.nodejs-18_x;
+            })
+          ];
+          pkgs = import nixpkgs {
+            inherit overlays system;
+
+            config.allowUnfree = true;
+          };
+          libraries = with pkgs; [
+            atk
+            alsa-lib
+            cairo
+            cups
+            dbus
+            expat
+            glib
+            gtk3
+            libdrm
+            libxkbcommon
+            mesa
+            nspr
+            nss
+            pango
+            xorg.libxcb
+            xorg.libX11
+            xorg.libXcomposite
+            xorg.libXdamage
+            xorg.libXext
+            xorg.libXfixes
+            xorg.libXrandr
+          ];
+        in
+        {
+          devShells.default = with pkgs; mkShell {
+            packages = with pkgs; [
+              nodejs
+              (pkgs.runCommand "corepack-enable" { } ''
+                mkdir -p $out/bin
+                ${nodejs}/bin/corepack enable --install-directory $out/bin
+              '')
+            ] ++ libraries;
+
+            LD_LIBRARY_PATH = lib.makeLibraryPath libraries;
+          };
+        });
+}