fix(server): allow STDOUT#puts with no arguments (blank line)

[crossi-dev]

Fixes#6

Problem

Terminalwire::Server::Resource::STDOUT#puts is declared with a required argument:

defputs(data)command("print_line",data: data)end

So calling context.puts with no arguments raises ArgumentError: wrong number of arguments (given 0, expected 1). Ruby's stdlib puts with no args is valid and prints a blank line, so this is a surprising crash for an otherwise drop-in API.

Fix

Make the argument optional and coerce with to_s, matching stdlib puts semantics (no args / nil → blank line):

defputs(data=nil)command("print_line",data: data.to_s)end

One-line change, plus two RSpec cases covering the no-arg and nil paths.

Verified

The repo's integration suite uses pty (Linux pseudoterminal), which I can't run on my machine, so I verified the method logic directly:

BEFORE (def puts(data)):
puts("Hello") → "Hello" PASS
puts() → ArgumentError: wrong number of arguments (given 0, expected 1) ← bug
puts(nil) → "" PASS
AFTER (def puts(data = nil)):
puts("Hello") → "Hello" PASS
puts() → "" PASS
puts(nil) → "" PASS

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Came across Terminalwire and noticed #6 had been open a while, so I went ahead and fixed it. No strings attached — I'm with Choreless and we like contributing real fixes to projects we use. If it's useful and you ever want a hand with something larger, happy to help.

— Charles