feat: add nix flake configuration for project development environment

Closes Ticket: DX-1345

Co-authored-by: aider <[email protected]>

Author: ericcrosson-bitgo

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -15,4 +15,5 @@ lab/
 .yarn
 modules/**/dist/
 modules/**/pack-scoped/
-coverage
+coverage
+/.direnv/

.prettierignore

@@ -5,6 +5,6 @@ protobuf/
 *.json
 *.min.js
 CHANGELOG.md
+flake.lock
 
-
-modules/babylonlabs-io-btc-staking-ts/
+modules/babylonlabs-io-btc-staking-ts/

CODEOWNERS

@@ -137,3 +137,5 @@
 /tsconfig.json @BitGo/coins @BitGo/web-experience @BitGo/wallet-platform
 /tsconfig.packages.json @BitGo/coins @BitGo/web-experience @BitGo/wallet-platform
 /.iyarc @BitGo/wallet-platform @BitGo/hsm @BitGo/velocity
+flake.nix @BitGo/wallet-platform @BitGo/hsm @BitGo/developer-experience
+flake.lock @BitGo/wallet-platform @BitGo/hsm @BitGo/developer-experience

flake.lock

@@ -0,0 +1,34 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs";
+    nixpkgs-nodejs.url = "github:nixos/nixpkgs/de1864217bfa9b5845f465e771e0ecb48b30e02d"; # Node.js 20.18.1
+  };
+
+  outputs = {
+    self,
+    nixpkgs,
+    nixpkgs-nodejs,
+  }: let
+    forEachSystem = nixpkgs.lib.genAttrs [
+      "aarch64-darwin"
+      "aarch64-linux"
+      "x86_64-darwin"
+      "x86_64-linux"
+    ];
+  in {
+    devShells = forEachSystem (system: let
+      pkgs = nixpkgs.legacyPackages.${system};
+    in {
+      default = pkgs.mkShell {
+        packages = with nixpkgs-nodejs.legacyPackages.${system}; [
+          nodejs_20
+          (yarn.override { nodejs = nodejs_20; })
+        ];
+
+        shellHook = ''
+          export PATH="$(pwd)/node_modules/.bin:$PATH"
+        '';
+      };
+    });
+  };
+}