Why build didn't fail at TypeError in K6

Grafana k6 OSS Support
2

This seems like it was a script error that just aborted some iterations prematurely. This will not cause k6 to return a non-zero exit code, only crossed thresholds will. So I suggest wrapping your code in a try / catch block and if there’s an exception. Something like this:

import { Counter } from 'k6/metrics'

let failures = new Counter('failed_iterations');

export let options = {
    thresholds: {
        failed_iterations: ['count==0'],
    }
};

export default function () {
    try {
        if (Math.random() < 0.5) {
            console.log('throwing an error');
            throw new Error('random script error');
        }
    } catch (e) {
        failures.add(1);
    }
};
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