cli: add sound when awaiting ledger interaction

[juliangruber]

Since it's a long running script, notify the operator that a ledger interaction is necessary

[bajtos]

The changes SGTM, with two comments to consider:

• Personally, I configured my terminal to turn ANSI beep sequence into a screen flash, so this is probably not going to work for me. (I didn't check, TBH.)
• In the past, I had a good experience using say, a built-in macOS CLI utility. That may not be portable to Linux/Windows, though.

[juliangruber]

The changes SGTM, with two comments to consider:

• Personally, I configured my terminal to turn ANSI beep sequence into a screen flash, so this is probably not going to work for me. (I didn't check, TBH.)

Beeper uses this:

process.stdout.write('\u0007');

Can you try if that creates a sound for you? For me it plays a sound and makes the screen flash.

• In the past, I had a good experience using say, a built-in macOS CLI utility. That may not be portable to Linux/Windows, though.

I'm also using that in my shall, eg node script.js && say "done", but that doesn't work here (unless we add something like node script.js --on-ledger="say \"attention\""). I could look into a say node module (for a portable solution), or would you suggest to just spawn that utility?

[bajtos]

The changes SGTM, with two comments to consider:

• Personally, I configured my terminal to turn ANSI beep sequence into a screen flash, so this is probably not going to work for me. (I didn't check, TBH.)

Beeper uses this:

process.stdout.write('\u0007');

Can you try if that creates a sound for you? For me it plays a sound and makes the screen flash.

node -e "process.stdout.write('\u0007');"

For me, this flashes the screen, but there is no sound.

• In the past, I had a good experience using say, a built-in macOS CLI utility. That may not be portable to Linux/Windows, though.

I'm also using that in my shall, eg node script.js && say "done", but that doesn't work here (unless we add something like node script.js --on-ledger="say \"attention\""). I could look into a say node module (for a portable solution), or would you suggest to just spawn that utility?

IDK, TBH. I don't want us to spend too much time on this, it does not seem to worth the effort.

What is the simplest solution?

How about we execute the say CLI when running on macOS and fall back to beeper on other platforms? (We can use your write snippet directly to avoid an extra dependency.)

[bajtos]

We can also land this PR as-is and improve it iteratively later.

[juliangruber]

Up to you! I'm fine with the solution as is because it does everything I need. I propose you follow up with a say implementation if you need it?

[juliangruber]

I would say it's fair to assume that a shell ascii beep works, and I think your setup diverges from the norm, therefore I think following up with say best sits with you

[bajtos]

SGTM 👌🏻