@codechecks/lighthouse-keeper/lib/compareReports.js

Keep an eye on Google Lighthouse score changes

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const lodash_1 = require("lodash");
function compareReports(base, head) {
    const metricsComparison = compareMetrics(base ? base.metrics : {}, head.metrics);
    const failedAudits = getNewFailedAudits(base ? base.audits : [], head.audits);
    return {
        metricsComparison,
        failedAudits,
    };
}
exports.compareReports = compareReports;
function compareMetrics(base, head) {
    function diffFor(key, name) {
        if (!head[key]) {
            return undefined;
        }
        return {
            name,
            key,
            value: head[key],
            diff: head[key] - (base[key] || 0),
        };
    }
    return [
        diffFor("performance", "Performance"),
        diffFor("accessibility", "Accessibility"),
        diffFor("best-practices", "Best practices"),
        diffFor("seo", "SEO"),
        diffFor("pwa", "PWA"),
    ].filter(d => Boolean(d));
}
function getNewFailedAudits(base, head) {
    function getFailedAudits(audits) {
        const failedAudits = audits.filter(a => a.score === 0);
        return failedAudits;
    }
    const failedBaseAudits = getFailedAudits(base);
    const failedHeadAudits = getFailedAudits(head);
    const newFailedAudits = lodash_1.differenceBy(failedHeadAudits, failedBaseAudits, "id");
    return newFailedAudits;
}
//# sourceMappingURL=compareReports.js.map