printing to the console without newline?

print is exactly the same as console.log in Espruino - it's really there just to make it easier for learners...

If you know where the console is (eg. Serial1) you can just do Serial1.write - but you should be aware that you can totally mess things up - console.log actually removes the current line(s) being input in the console before writing your text (the current input line is then put back when your JS function has finished executing)