chalk does not produce colored logs if run with --no-worker-threads

[stevecaldwell77]

With this setup:

• packages:
  • ava 5.2.0
  • chalk 4.1.2
  • ts-node 10.9.1
  • typescript 4.9.5
• Using ts-node for compilation
• TS configured to use module mode of commonjs

I'm trying to use chalk to color my log message, e.g.:

import test from "ava";
import chalk from "chalk";

test("colors are logged", (t) => {
  t.log(chalk.red("this message is in red"));
  t.log(chalk.green("this message is in green"));
  t.pass();
});

The messages show up correctly colored when I run ava normally:

npx ava

But if I turn off worker threads the messages end up gray:

npx ava --no-worker-threads

I have a sample repository here: https://github.com/stevecaldwell77/ava-chalk

And here is a StackBlitz link: https://stackblitz.com/github/stevecaldwell77/ava-chalk?file=README.md

[novemberborn]

Chalk detects color support based on its environment, my guess is that in a child process it doesn't inherit those details. You should be able to instantiate a Chalk instance that explicitly enables colors, or use environment variables or some of its other override options.

AVA does the same internally for its own Chalk instance.

[stevecaldwell77]

Yes, this works. Thanks!

import test from 'ava';
import { Instance as Chalk } from 'chalk';

const chalk = new Chalk({ level: 1 });

test('colors are logged', (t) => {
  t.log(chalk.red('this message is in red'));
  t.log(chalk.green('this message is in green'));
  t.pass();
});