const { Reader } = require('ts-edifact');
const reader = new Reader();

const edi = "UNA:+.? 'UNB+UNOC:3+SENDER+RECEIVER+230226:1000+1'UNH+1+MSG:D:01A:UN'BGM+380+123+9'NAD+BY+00000::92++CB-Fenton F (US)+Center Rd+Fenton++48430+US'UNT+5+1'UNZ+1+1'";
try {
    console.log('Testing string length:', edi.length);
    console.log('Char at 179:', edi[179]); // In original test_efz it failed at 179
    const segments = reader.parse(edi);
    console.log('Successfully parsed', segments.length, 'segments.');
} catch (e) {
    console.error('Error:', e.message);
    if (e.stack) console.error(e.stack);
}