refactor and lint commands, make consistent

Still pending test coverage for most of these, but wanted to give them a
clean sweep to get the "load-all-commands" tests passing.

The following changes are in here:

- All commands now have a `completion()` method and a usage string that
  uses the same `usage` util consistently.
- The `silent` argument to many commands has been removed.
- All commands use the `cmd = ${cmd}(args).then(() => cb()).catch(cb)`
  pattern consistently.

Full test coverage for all commands is still lacking, and will have to
be done prior to the GA v7 release.

1 files changed, 1 insertions, 1 deletions

diff --git a/test/lib/restart.js b/test/lib/restart.js
index f705d5f60..fde798888 100644
--- a/test/lib/restart.js
+++ b/test/lib/restart.js
@@ -1,5 +1,5 @@
 const t = require('tap')
 const restart = require('../../lib/restart.js')
 t.isa(restart, Function)
-t.equal(restart.completion, undefined, 'no completion')
+t.equal(restart.completion, require('../../lib/utils/completion/none.js'), 'empty completion')
 t.equal(restart.usage, 'npm restart [-- <args>]')