diff --git a/pkgs/by-name/so/sourcemapper/package.nix b/pkgs/by-name/so/sourcemapper/package.nix
new file mode 100644
index 000000000000..98d6ae4c13e7
--- /dev/null
+++ b/pkgs/by-name/so/sourcemapper/package.nix
@@ -0,0 +1,30 @@
+{
+  lib,
+  buildGoModule,
+  fetchFromGitHub,
+}:
+
+buildGoModule {
+  pname = "sourcemapper";
+  version = "0-unstable-2024-03-22";
+
+  src = fetchFromGitHub {
+    owner = "denandz";
+    repo = "sourcemapper";
+    rev = "467916e59f9f28f2df3c2fb209db32dabd057c92";
+    hash = "sha256-JuP8ElLyG+FynH0YYZqpZejbAwcCq5d9lj5hJYGW7+g=";
+  };
+
+  vendorHash = null;
+
+  meta = {
+    description = "Extract JavaScript source trees from Sourcemap files";
+    homepage = "https://github.com/denandz/sourcemapper";
+    license = lib.licenses.bsd3;
+    mainProgram = "sourcemapper";
+    maintainers = with lib.maintainers; [
+      emilytrau
+      crem
+    ];
+  };
+}