performance.js

const lighthouse = require('lighthouse');
const chromeLauncher = require('chrome-launcher');
const AirtablePlus = require('airtable-plus');

const airtable = new AirtablePlus({
    baseID: 'app6ttxB70e3TjmCL',
    apiKey: 'API_KEY',
    tableName: 'Themes',
});


let lighthouseConfigDesktop = {
    extends: 'lighthouse:default',
    settings: {
        maxWaitForFcp: 15 * 1000,
        maxWaitForLoad: 35 * 1000,
        formFactor: 'desktop',
        throttling: {
            rttMs: 40,
            throughputKbps: 10 * 1024,
            cpuSlowdownMultiplier: 1,
            requestLatencyMs: 0, // 0 means unset
            downloadThroughputKbps: 0,
            uploadThroughputKbps: 0,
        },
        screenEmulation: {
            mobile: {
                mobile: true,
                width: 360,
                height: 640,
                // Moto G4 is really 3, but a higher value here works against
                // our perf recommendations.
                // https://github.com/GoogleChrome/lighthouse/issues/10741#issuecomment-626903508
                deviceScaleFactor: 2.625,
                disabled: false,
            },
            desktop: {
                mobile: false,
                width: 1350,
                height: 940,
                deviceScaleFactor: 1,
                disabled: false,
            },
        },
        emulatedUserAgent: 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4420.0 Safari/537.36 Chrome-Lighthouse',
        // Skip the h2 audit so it doesn't lie to us. See https://github.com/GoogleChrome/lighthouse/issues/6539
        skipAudits: ['uses-http2'],
    },
};

let lighthouseConfigMobile = {
    extends: 'lighthouse:default',
    settings: {
        maxWaitForFcp: 15 * 1000,
        maxWaitForLoad: 35 * 1000,
        // lighthouse:default is mobile by default
        // Skip the h2 audit so it doesn't lie to us. See https://github.com/GoogleChrome/lighthouse/issues/6539
        skipAudits: ['uses-http2'],
    },
    audits: [
        'metrics/first-contentful-paint-3g',
    ],
    categories: {
        // TODO(bckenny): type extended Config where e.g. category.title isn't required
        performance: /** @type {LH.Config.CategoryJson} */({
            auditRefs: [
                {id: 'first-contentful-paint-3g', weight: 0},
            ],
        }),
    },
};

(async () => {
    const chrome = await chromeLauncher.launch({chromeFlags: ['--headless']});
    lighthouseConfigDesktop.port = chrome.port;
    lighthouseConfigMobile.port = chrome.port;

    try {
        const themes = await airtable.read({ view: 'Newsroom', filterByFormula: `({Lighthouse Performance Desktop} = '')`});

        for (let theme of themes) {
            console.log(`Running report for ${theme.fields.Url}`);
            const runnerResultDesktop = await lighthouse(theme.fields.Url, lighthouseConfigDesktop);
            const runnerResultMobile = await lighthouse(theme.fields.Url, lighthouseConfigMobile);

            const data = {
                'Lighthouse Performance Desktop' : runnerResultDesktop.lhr.categories.performance.score,
                'Lighthouse Performance Mobile' : runnerResultMobile.lhr.categories.performance.score
            }

            console.log(data);

            await airtable.update(theme.id, data)
        }

    } catch (Error) {
        console.log(Error);
    }


    await chrome.kill();
})();