@mmarchini/observe/lib/commands/heap-profile.js

Inspector Protocol made easy

'use strict';

async function run(client, stream, options={}) {
  const samplingInterval = options.samplingInterval || 512 * 1024;
  const duration = (options.duration || 60) * 1000;

  await client.post("HeapProfiler.enable");
  await client.post("HeapProfiler.startSampling", {samplingInterval});

  // Wait for 60 seconds
  await new Promise((res) => setTimeout(res, duration));

  const res = await client.post("HeapProfiler.stopSampling");
  const { profile } = res;
  stream.write(JSON.stringify(profile));
}

module.exports = { run };