Merge pull request #273084 from l0b0/fix-web-ext

web-ext: Include only production dependencies in build

pkgs/development/tools/web-ext/default.nix

···
 { lib
 , buildNpmPackage
 , fetchFromGitHub
+, runCommand
+, web-ext
 }:
 
 buildNpmPackage rec {
···
   };
 
   npmDepsHash = "sha256-KPBKUjCxva11w/E+Qhlx+1vikpCL7Hr9MiKenYHEVSU=";
+
+  npmBuildFlags = [ "--production" ];
+
+  passthru.tests.help = runCommand "${pname}-tests" { } ''
+    ${web-ext}/bin/web-ext --help
+    touch $out
+  '';
 
   meta = {
     description = "A command line tool to help build, run, and test web extensions";