diff --git a/Cargo.lock b/Cargo.lock
index b4e64ee..502d0fe 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -37,9 +37,9 @@ checksum = "5c6cb57a04249c6480766f7f7cef5467412af1490f8d1e243141daddada3264f"
 
 [[package]]
 name = "ariadne"
-version = "0.4.1"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "44055e597c674aef7cb903b2b9f6e4cba1277ed0d2d61dae7cd52d7ffa81f8e2"
+checksum = "31beedec3ce83ae6da3a79592b3d8d7afd146a5b15bb9bb940279aced60faa89"
 dependencies = [
  "unicode-width",
  "yansi",
diff --git a/Cargo.toml b/Cargo.toml
index 2434c6e..30f90cd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
-ariadne = "0.4.1"
+ariadne = "0.5.0"
 chumsky = "0.9.3"
 console_error_panic_hook = "0.1.7"
 itertools = "0.13.0"
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..63d8f92
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,93 @@
+{
+  "nodes": {
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1733312601,
+        "narHash": "sha256-4pDvzqnegAfRkPwO3wmwBhVi/Sye1mzps0zHWYnP88c=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "205b12d8b7cd4802fbcb8e8ef6a0f1408781a4f9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1733392399,
+        "narHash": "sha256-kEsTJTUQfQFIJOcLYFt/RvNxIK653ZkTBIs4DG+cBns=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d0797a04b81caeae77bcff10a9dde78bc17f5661",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-lib": {
+      "locked": {
+        "lastModified": 1733096140,
+        "narHash": "sha256-1qRH7uAUsyQI7R1Uwl4T+XvdNv778H0Nb5njNrqvylY=",
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/5487e69da40cbd611ab2cadee0b4637225f7cfae.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/5487e69da40cbd611ab2cadee0b4637225f7cfae.tar.gz"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1728538411,
+        "narHash": "sha256-f0SBJz1eZ2yOuKUr5CA9BHULGXVSn6miBuUWdTyhUhU=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "b69de56fac8c2b6f8fd27f2eca01dcda8e0a4221",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-parts": "flake-parts",
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1733538766,
+        "narHash": "sha256-FEDfBpM82XGdHDbLDJC4lV+QXSVN1rERt1MqtBGJZds=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "66526479b295ad238843a8a7367d2da7ec102757",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..a748816
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,38 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+    flake-parts.url = "github:hercules-ci/flake-parts";
+  };
+
+  outputs = inputs@{ flake-parts, ... }:
+    flake-parts.lib.mkFlake { inherit inputs; }
+      {
+        systems = [
+          "x86_64-linux"
+          "aarch64-linux"
+        ];
+
+        perSystem = { self', lib, system, pkgs, config, ... }: {
+          _module.args.pkgs = import inputs.nixpkgs {
+            inherit system;
+
+            overlays = with inputs; [
+              rust-overlay.overlays.default
+            ];
+          };
+
+          devShells.default =
+            let
+              rust-toolchain = pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
+            in
+            pkgs.mkShell {
+              packages = [ 
+                rust-toolchain
+                pkgs.wasm-pack
+                pkgs.nodejs
+              ];
+            };
+        };
+      };
+}
\ No newline at end of file
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..1765a1f
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,4 @@
+[toolchain]
+channel = "stable"
+components = ["rust-src", "rust-analyzer"]
+targets = [ "wasm32-unknown-unknown" ]
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
index 66ff005..21396d5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -57,7 +57,7 @@ pub fn format_errors<T: std::hash::Hash + Eq + std::fmt::Display>(
     let mut error_output = Vec::new();
 
     errors.into_iter().for_each(|e| {
-        Report::build(ReportKind::Error, (), e.span().start)
+        Report::build(ReportKind::Error, e.span())
             .with_message(e.to_string())
             .with_label(Label::new(e.span()).with_color(Color::Red))
             .finish()
diff --git a/src/main.rs b/src/main.rs
index 9796a87..f891135 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -18,7 +18,7 @@ fn main() {
 
     if let Err(err) = tokens.clone() {
         err.into_iter().for_each(|e| {
-            Report::build(ReportKind::Error, (), e.span().start)
+            Report::build(ReportKind::Error, e.span())
                 .with_message(e.to_string())
                 .with_label(Label::new(e.span()).with_color(Color::Red))
                 .finish()
@@ -37,7 +37,7 @@ fn main() {
         println!("{:#?}", err);
 
         err.into_iter().for_each(|e| {
-            Report::build(ReportKind::Error, (), e.span().start)
+            Report::build(ReportKind::Error, e.span())
                 .with_message(e.to_string())
                 .with_label(Label::new(e.span()).with_color(Color::Red))
                 .finish()