Repro for Loglevel#187

index.js

import log from 'loglevel';
import logPrefix from 'loglevel-plugin-prefix';
import { logFromA } from './module-a.js';
import { logFromB } from './module-b.js';

logPrefix.reg(log);
logPrefix.apply(log, { template: '[%t] %l %n:' });
log.enableAll();

// Comment out the imports at the top of the file and uncomment these to make
// things work like you probably expect!
// const logFromA = (await import('./module-a.js')).logFromA
// const logFromB = (await import('./module-b.js')).logFromB

log.warn('Warn at root!');
log.info('Info at root!');
logFromA();
logFromB();

module-a.js

import log from 'loglevel';

const logger = log.getLogger('ModuleA');

export function logFromA() {
    logger.warn('Warn from A!');
    logger.info('Info from A!');
}

module-b.js

import log from 'loglevel';

const logger = log.getLogger('ModuleB');

export function logFromB() {
    logger.warn('Warn from B!');
    logger.info('Info from B!');
}

package.json

{
  "name": "test-187",
  "version": "1.0.0",
  "description": "Testing loglevel#187",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "MIT",
  "dependencies": {
    "loglevel": "^1.8.1",
    "loglevel-plugin-prefix": "^0.8.4"
  },
  "type": "module"
}