Remove undefined value on init cli command

[ignacioola]

Fixes undefined description message when running react-native init --help on an existing React Native project.

Test Plan:

Run the cli from react-native repo:

> cd react-native
> yarn
> node local-cli/cli.js init --help

And see that the description no longer says undefined

Release Notes:

[CLI][BUGFIX][local-cli/cliEntry.js] - Fix undefined description message when running init cli command help.

[elicwhite]

Maybe we should be requiring every command to have a description instead of patching this here.

For reference, this is where commanderjs defines it's help behavior. https://github.com/tj/commander.js/blob/master/index.js#L1083-L1101

cc @grabbou

I'll land this in the mean time though, seems reasonable enough short term patch.

[facebook-github-bot]

@TheSavior is landing this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[react-native-bot]

@ignacioola merged commit 58732a8 into facebook:master.

[grabbou]

Interesting @ignacioola - sorry to comment after that amount of time, but it's weird that you have run into this issue.

Description itself is optional and we set noHelp to avoid printing information when it's not provided. See here: https://github.com/react-native-community/react-native-cli/blob/master/packages/cli/src/cliEntry.js#L97

Let's take a closer look here. Maybe noHelp is not working as expected?

[grabbou]

I am moving this discussion to the CLI repository.