@netlify/build/lib/status/success.js

Netlify build module

import { runsOnlyOnBuildFailure } from '../plugins/events.js';
// The last event handler of a plugin (except for `onError` and `onEnd`)
// defaults to `utils.status.show({ state: 'success' })` without any `summary`.
export const getSuccessStatus = function (newStatus, { steps, event, packageName }) {
    if (newStatus === undefined && isLastNonErrorStep({ steps, event, packageName })) {
        return IMPLICIT_STATUS;
    }
    return newStatus;
};
const isLastNonErrorStep = function ({ steps, event, packageName }) {
    const nonErrorSteps = steps.filter((step) => step.packageName === packageName && !runsOnlyOnBuildFailure(step.event));
    return nonErrorSteps.length === 0 || nonErrorSteps[nonErrorSteps.length - 1].event === event;
};
const IMPLICIT_STATUS = { state: 'success', implicit: true };