[Bug]: `issueFeatureUpdates` is not iterable

[Rafael Baldasso Audibert]

Bug Description

When trying to promote a changelog which would generate an empty issueFeatureUpdates, an error is raised.

This is the changelog

  zapier:promote TypeError: issueFeatureUpdates is not iterable
  zapier:promote     at PromoteCommand.perform (/home/rafael/.nvm/versions/node/v16.14.0/lib/node_modules/zapier-platform-cli/src/oclif/commands/promote.js:99:46)
  zapier:promote     at async Promise.all (index 1)
  zapier:promote     at async PromoteCommand._run (/home/rafael/.nvm/versions/node/v16.14.0/lib/node_modules/zapier-platform-cli/node_modules/@oclif/command/lib/command.js:43:20)
  zapier:promote     at async Config.runCommand (/home/rafael/.nvm/versions/node/v16.14.0/lib/node_modules/zapier-platform-cli/node_modules/@oclif/config/lib/config.js:173:24)
  zapier:promote     at async Main.run (/home/rafael/.nvm/versions/node/v16.14.0/lib/node_modules/zapier-platform-cli/node_modules/@oclif/command/lib/main.js:28:9)
  zapier:promote     at async Main._run (/home/rafael/.nvm/versions/node/v16.14.0/lib/node_modules/zapier-platform-cli/node_modules/@oclif/command/lib/command.js:43:20) +431ms
 ›   Error: issueFeatureUpdates is not iterable

This is happening because the code is trying to spread undefined. Although this works for objects (i.e. {...undefined} is valid), it doesn't work for arrays (i.e. [...undefined] is invalid)

Reproduction Steps

Have a changelog with the following text:

## 1.10.1

1. Improve performance for trigger/my_trigger_1
2. Improve performance for trigger/my_trigger_2

Try promoting it, it'll fail

Zapier Platform version

15.0.1

Node.js version

16.14.0

Your Operating System

No response

npm/yarn version

No response

App ID

No response

More Details

No response

[Raúl Negrón]

Hello @rafaeelaudibert, thank you for your bug report!

We are actively working on a solution for this over at #690. So a fix is coming soon!