Remi pointed out in #666 that we basically just have to keep adding more
more onto the `Max` exception for both these rules every time we add a
new API resource.
Here I suggest that we modify the check on method length in two ways:
1. Permanently disable the cop on `Util.object_classes`. This is just
going to keep growing until we change are approach to it.
2. Choose a more reasonable maximum of 50 lines for elsewhere (IMO, the
default of 10 is just too short). Most of our methods already come in
below this, but there's a couple outliers like `#execute_request` in
`StripeClient`. If we knock over some of those, we could lower this
number again, but I suspect that we'd probably want somewhere closer
to 30 (instead of 10) event then.
I also disable the check on module length completely. I'm not convinced
this is a very good heuristic for code quality.
Adds the magic `frozen_string_literal: true` comment to every file and
enables a Rubocop rule to make sure that it's always going to be there
going forward as well.
See here for more background [1], but the basic idea is that unlike many
other languages, static strings in code are mutable by default. This has
since been acknowledged as not a particularly good idea, and the
intention is to rectify the mistake when Ruby 3 comes out, where all
string literals will be frozen. The `frozen_string_literal` magic
comment was introduced in Ruby 2.3 as a way of easing the transition,
and allows libraries and projects to freeze their literals in advance.
I don't think this is breaking in any way: it's possible that users
might've been pulling out one of are literals somehow and mutating it,
but that would probably not have been useful for anything and would
certainly not be recommended, so I'm quite comfortable pushing this
change through as a minor version.
As discussed in #641.
[1] https://stackoverflow.com/a/37799399
