Request.resourceType doesnt match DevTools

[ebidel]

request.resourceType doesn't always match the resourceType shown in devtools:

const puppeteer = require('puppeteer');
(async() => {
const browser = await puppeteer.launch();
const page = await browser.newPage();

const responses = [];
page.on('response', resp => {
  responses.push(resp);
});

page.on('load', resp => {
  responses.map(async (r, i) => {
    const request = await r.request();
    console.log(request.url, request.resourceType);
  });
});

await page.goto('https://news.ycombinator.com/', {waitUntil: 'networkidle'});
browser.close();
})();

[aslushnikov]

@ebidel interesting! Almost everything is reported as "Other".

DevTools workaround this by falling back to mimeType: DevTools code. This approach wouldn't work for us since we need resourceType to process interception, and the mimeType is only available in the response.

[ebidel]

Could we provide something (request.mimeType property) that uses the mime module to figure out the type? Even if we can't fix this bug, that info would be useful by itself to write files with the proper extension, use new Blob(), etc.

[zicai]

+1

[aslushnikov]

@ebidel that's a protocol bug; I'll fix it upstream.

[aslushnikov]

Upstream bug: crbug.com/765501