feat: add --quiet flag to suppress No depcheck issue messages

[openam]

Closes #759

[rumpl]

In my mind a --quiet would make depcheck not print anything at all, could we update it so that --quiet doesn't print anything?

[openam]

@rumpl That sounds more like a --silent tag. The point of this PR was to make it so that people using a monorepo wouldn't have to look through 100 lines of No depcheck issue noise to find the one line that has an error. e.g.

many more
...
constants: No depcheck issue
permissions: No depcheck issue
utils: No depcheck issue
errors: No depcheck issue
logger: No depcheck issue
aws-sqs: No depcheck issue
aws-s3: No depcheck issue
koa-logger: No depcheck issue
opsgenie: No depcheck issue
config: Missing dependencies
config: * logger: ./index.js
geo: No depcheck issue
proxy: No depcheck issue
ably: No depcheck issue
dashboard: No depcheck issue
authenticator: No depcheck issue
...
plus many more
...
lerna ERR! Received non-zero exit code 255 during execution
lerna success exec Executed command in 108 packages: "depcheck"

vs

config: Missing dependencies
config: * logger: ./index.js
lerna ERR! Received non-zero exit code 255 during execution
lerna success exec Executed command in 108 packages: "depcheck --quiet"

[seansfkelley]

Throwing my hat in the ring here as a commenter on the original issue: I agree on the distinction between --quiet and --silent (though can't really imagine when I would want to use the latter with a tool like depcheck). When I give --quiet to some arbitrary tool, I typically expect only "essential" output to be printed (or: output requiring an action from me). Maybe there is more non-essential logging that should be covered by --quiet than just this line, but I definitely do want to see in which file the issues were found.

[rumpl]

Great, thanks for this!

[openam]

@rumpl Is there anything I need to do to get a version released that contains this change? Unfortunately this was merged in like 3 days after the last release.

[rumpl]

You only need to ask, I'll make a new release tomorrow ;)

[openam]

@rumpl would you please make a release with this --quiet flag.

[rumpl]

@openam Version 1.4.6 with this option was just released!