measured metrics

[aminbouhamed]

hello is lighthouse can mesure those metrics (Time to First Byte (TTFB),Start Render Time,Fully Loaded Time,Time to Interactive ? ) if yes how can i configure it to do that please

[adamraine]

We have several debugging metrics in the Lighthouse JSON result:

const {lhr} = await lighthouse('https://example.com');
lhr.audits['metrics'].details.items[0].interactive // Time to Interactive
lhr.audits['metrics'].details.items[0].timeToFirstByte // TTFB

The other metrics aren't computed in Lighthouse to my knowledge.

[aminbouhamed]

file:///c:/Users/bouha/Desktop/stage%20meg/script.js:8
runnerResult.audits['metrics'].details.items[0].interactive // Time to Interactive
^

TypeError: Cannot read properties of undefined (reading 'audits')
at file:///c:/Users/bouha/Desktop/stage%20meg/script.js:8:14
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
i tried the code but this error was raised

[adamraine]

Please try runnerResult.lhr.audits['metrics'].details.items[0].interactive