Best way to intercept XHR request on page with Puppeteer and return mock response

It seems that the way to go is request.respond() indeed, but still, I couldn’t find a concrete example in the web on how to use it. The way I did it was like this:

// Intercept API response and pass mock data for Puppeteer
await page.setRequestInterception(true);
page.on('request', request => {
    if (request.url() === constants.API) {
        request.respond({
            content: 'application/json',
            headers: {"Access-Control-Allow-Origin": "*"},
            body: JSON.stringify(constants.biddersMock)
        });
    }
    else {
        request.continue();
    }
});

What happens here exactly?

1. Firstly, all requests are intercepted with page.setRequestInterception()
2. Then, for each request I look for the one I am interested in, by matching it by URL with if (request.url() === constants.API) where constants.API is just the endpoint I need to match.
3. If found, I pass my own response with request.respond(), otherwise I just let the request continue with request.continue()

Two more points:

• constants.biddersMock above is an array
• CORS header is important or access to your mock data will not be allowed

Please comment or refer to resources with better example(s).