GH-706 dependency patch fix for 8.x only

[brodybits]

UPDATED:

• reintroduce xcode dependency as needed in 8.1.x to avoid breaking plugins such as branch-cordova-sdk before next major release, to resolve xcode was removed, but is required with 8.1.0 #706 (bug xcode was removed, but is required with 8.1.0 #706)
• emit a message in case someone uses requireCordovaModule('xcode') that it is now deprecated, will be removed in the near future, along with the recommended solution
• reintroduce some other dependencies to better ensure that any other plugins or applications using requireCordovaModule would not be broken by a minor release upgrade
• tar dependency back to tar@2
• emit a deprecation warning message in case a plugin or application uses requireCordovaModule with a non-Cordova module
• updates from PR Deprecate requireCordovaModule for non-Cordova modules #707:
  • minor optimization for requireCordovaModule for module names that do not start with "cordova-lib"
  • JSDoc updates
  • Context#requireCordovaModule unit tests

This fix is NOT WANTED in master branch. I think we do not want to support requireCordovaModule('xcode') in the next major release.

This fix was tested as follows:

• pushed this change to bug-706-xcode-hotfix-test on my fork
• made bug-706-xcode-hotfix-test branch on my fork of cordova-cli that uses cordova-lib from git+https://github.com/brodybits/cordova-lib.git#bug-706-xcode-hotfix-test as dependency
• In https://github.com/brodybits/cordova-xcode-error (fork of https://github.com/Tallyb/cordova-xcode-error with config.xml fix):
  • I used cross-platform nvs tool (https://github.com/jasongin/nvs) to switch to Node.js 10.10 and do npm i -g https://github.com/brodybits/cordova-cli#bug-706-xcode-hotfix-test
  • cordova platform add ios outputs the deprecation message, does not fail with the xcode error

Resolves #706

[janpio]

(PR title should describe the change first, then administrative information)

[raphinesse]

I think a minor release would be more fitting to introducing a deprecation notice, but I'm not quite sure. What would you say?

[raphinesse]

To really adhere to semver, we cannot drop any dependencies or make major version updates because of #689. So here's the list of dependencies that we dropped between 8.0.0 and 8.1.0:

dependency-ls@^1.1.1
request@2.79.0
unorm@1.4.1
valid-identifier@0.0.1
xcode@^1.0.0

Furthermore, we updated tar from 2.2.1 to ^4.4.1.

[brodybits]

I just pushed some changes:

• updates from Deprecate requireCordovaModule for non-Cordova modules #707
• squash fixes to support Node.js 4 (unsure if 'use strict' is needed or not)
• fix const pkg declaration for Node.js 4 & resolve unused variable in eslint
• remove extra xcode warning that we added, due to the more general deprecation warning from Deprecate requireCordovaModule for non-Cordova modules #707 (squash fix)

Coming up are changes to restore the dependencies we dropped in 8.1.0.

[raphinesse]

@brodybits ping me when you think this is ready to review, please.

[brodybits]

@raphinesse this PR is now ready for review.

[janpio]

this and all the other dependencies that are readded are not reflected in the PR title and description

[raphinesse]

LGTM. The only thing I'm still unsure about is whether this shouldn't rather be a semver minor change, because of the deprecation.

[janpio]

It's just a deprecation notice, right? Then it should be acceptable to include it in a patch release.

[brodybits]

It's just a deprecation notice, right?

Yes. And I would like to resolve the GH-706 in a patch release.

One more thing is that if cordova-lib and Cordova CLI do not have the same version number there some extra "noise" will show up in cordova --version like this:

8.1.2-dev (cordova-lib@8.1.1-dev)

I would favor publishing this in cordova-lib@8.1.2 to avoid such noise.

[janpio]

I would favor publishing this in cordova-lib@8.1.2 to avoid such noise.

That's not how semver works.
That "noise" is expected and should be there (actually not showing the cordova-lib version if they are equal is not optimal).

[brodybits]

As discussed on the #dev channel on Slack, I just removed the changes to emit deprecation warning messages in case of non-Cordova modules (also removed a test case). This is to avoid the issue with https://semver.org/#spec-item-7 where a minor version increase is needed in case of the deprecation message. Merging now.

[janpio]

You didn't actually remove the code before merging.

[brodybits]

What I removed was cherry-pick of 27a2cfd from PR #707. You should not see any trace of it since I did a rebase with the cherry-pick of 27a2cfd. If I look at https://github.com/apache/cordova-lib/pull/708/files the code to emit the deprecation warning is no longer there.

[janpio]

Why is the rest of #707 required?
(Don't forget to update the PR description to reflect what you actually merged)

[raphinesse]

It does fix a theoretical bug but it's definitely not required.

For the record: I'd still prefer to have all the changes I originally approved together in a minor release.

[brodybits]

(Don't forget to update the PR description to reflect what you actually merged)

Done