I've been using node-fetch with different proxies and https-proxy-agent for years. Never had a problem. I switched to another proxy service and every 50 requests or so, the node.js process exits without warning. I know it's the proxy because if I switch to a different proxy it works perfectly.

How can I debug this issue if it just exits without warning and I don't have access to the logs of the proxy service?

This is the code I'm using for testing:

    let counter = 1
    while (true) {
      const agent = new HttpsProxyAgent(proxyUri)
      try {
        const html = await fetch(
          `https://www.google.com`,
          {headers: {'User-Agent': userAgent}, agent, timeout: 5000}
        ).then(res => res.text())
      }
      catch (e) {
        console.log(e.message)
      }
      console.log(counter++)
    }

It always exits without warning between 30-50 iterations with that proxy