Make iOS update commands run in sequence instead of all at once

[roryabraham]

cc @tgolen because I reused a trick I saw you used in migrateOnyx to get these promises to run one after another instead of all at the same time (although in my case the order doesn't matter).

Details

My theory is that this workflow failed because we have multiple asynchronous commands attempting to read from and write to the same file at the same time. Ideas for how to verify that theory are welcome.

Fixed Issues

Fixes failed deploys

Tests

Not tested locally.

[tgolen]

Cool! This is sure ugly code 🧌 It would be cool to make this into a utility at some point that we can use whenever we need it. Seems like it should work well for you in this case!

[tgolen]

Another possible cure for this would be to use execSync(): https://nodejs.org/api/child_process.html#child_process_child_process_execsync_command_options so that they run synchronously.

[tgolen]

Oh, and also... I think exec() in the array is already starting all the promises all at once. The code you added just makes sure that they are resolved one at a time... So to really get what you want, I think you need to do something more like this:

const updateCommands = [
    `/usr/libexec/PlistBuddy -c "Set :CFBundleShortVersionString ${shortVersion}" ${PLIST_PATH}`,
    `/usr/libexec/PlistBuddy -c "Set :CFBundleShortVersionString ${shortVersion}" ${PLIST_PATH_TEST}`,
    `/usr/libexec/PlistBuddy -c "Set :CFBundleVersion ${cfVersion}" ${PLIST_PATH}`,
    `/usr/libexec/PlistBuddy -c "Set :CFBundleVersion ${cfVersion}" ${PLIST_PATH_TEST}`
]
.reduce((previousPromise, command) => previousPromise.then(() => exec(command)), Promise.resolve());;

[roryabraham]

Ahhh yeah execSync seems like a much better choice for my use case! Thanks!

[roryabraham]

Updated!

[tgolen]

@ctkochan22 All you!