Luke Boswell (Dec 07 2022 at 02:55): Luke Boswell (Dec 07 2022 at 02:55):Screen-Shot-2022-12-07-at-13.53.03.png
Luke Boswell (Dec 07 2022 at 02:55):I thought I would share a simple example to colorise the terminal when printing test results. It's nothing fancy, but it might save you time looking for the codes and how to print them in Roc. I think they look cool!
pass = withColor "PASS: " Green
fail = withColor "FAIL: " Red
Stdout.line ("\(pass)\(name)")
interface TerminalColor
exposes [Color, escape, withColor]
imports []
Color : [
Green,
Red,
Blue,
Black,
]
escape : Color -> Str
escape = \color ->
when color is
Green -> "\u(001b)[32m"
Red -> "\u(001b)[31m"
Blue -> "\u(001b)[34m"
Black -> "\u(001b)[30m"
# Resets to black after
withColor : Str, Color -> Str
withColor = \text, color ->
code = escape color
black = escape Black
"\(code)\(text)\(black)"
Last updated: Jun 16 2026 at 16:19 UTC