The first parameter to Object.assign() is the same target object that
will be returned. That is, since commit 46874eed0 Params.parse() modifies
the @defaults object. Usually we pass that parameter as an object literal
and this isn't an issue, but the change breaks spectacularly in the few
cases where we use a re-usable variable.
Restore the previous behavior by copying the object first.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/615
Standard javascript now has Object.assign() which is very similar to
Params.parse(), except that the latter by default disallows "extra"
parameters. We can still leverage the standard API by simply
implementing the error check, and then call out to Object.assign()
for the actual parameter merging.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/612
js2-mode is no longer developed and we recommend js-mode these days,
so switch the modelines to specify that, and make them consistent
across all files.
https://bugzilla.gnome.org/show_bug.cgi?id=660358
