[polari/ci] Optionally use an unversioned js interpretor

[Gitlab System User <gitlab src gnome org>]

commit 4293f93fe3fab87ffe3a49d07a882313acb71f24
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Oct 19 06:50:57 2017 +0200

    Optionally use an unversioned js interpretor
    
    The js tool shipped by Fedora is old, so some sources are expected
    to fail validation.

 .gitlab-ci.yml | 2 +-
 meson.build    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index dc2f35f..7291734 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -6,7 +6,7 @@ stages:
 before_script:
   - dnf install -y gcc meson ninja-build redhat-rpm-config gettext itstool
                    gtk3-devel gjs-devel gobject-introspection-devel
-                   telepathy-glib-devel libappstream-glib desktop-file-utils
+                   telepathy-glib-devel libappstream-glib desktop-file-utils js
 
 build-polari:
   stage: build
diff --git a/meson.build b/meson.build
index 048643b..ec2a8d7 100644
--- a/meson.build
+++ b/meson.build
@@ -28,7 +28,7 @@ girdir = join_paths(pkgdatadir, 'gir-1.0')
 typelibdir = join_paths(pkglibdir, 'girepository-1.0')
 
 gjs_console = find_program('gjs')
-js52 = find_program('js52', required: false)
+js52 = find_program('js52', 'js', required: false)
 
 desktop_file_validate = find_program('desktop-file-validate', required: false)
 appstream_util = find_program('appstream-util', required: false)