@expo/xcpretty
This can be used to parse and format xcodebuild logs. The default error and warning format matches that of other tools in the Expo ecosystem.
import { Formatter } from '@expo/xcpretty';
const formatter = new Formatter({ projectRoot: '/' });
const lines = formatter.pipe('xcodebuild log results...');
for (const line of lines) {
console.log(line);
}