eslint_d: Add passthru.tests.version

Author: DamienCassou

pkgs/development/tools/eslint_d/default.nix

@@ -1,4 +1,4 @@
-{ lib, buildNpmPackage, fetchFromGitHub }:
+{ lib, buildNpmPackage, fetchFromGitHub, eslint_d, testers }:
 
 buildNpmPackage rec {
   pname = "eslint_d";
@@ -15,6 +15,8 @@ buildNpmPackage rec {
 
   dontNpmBuild = true;
 
+  passthru.tests.version = testers.testVersion { package = eslint_d; version = src.rev; };
+
   meta = with lib; {
     description = "Makes eslint the fastest linter on the planet";
     homepage = "https://github.com/mantoni/eslint_d.js";