Function patch

benchmark/diagnostics_channel/http.js:37–65

()

function none() {}

function patch() {
  const als = new AsyncLocalStorage();
  const times = [];

  const { emit } = http.Server.prototype;
  function wrappedEmit(...args) {
    const [name, req, res] = args;
    if (name === 'request') {
      als.enterWith({
        url: req.url,
        start: process.hrtime.bigint(),
      });

      res.on('finish', () => {
        times.push({
          ...als.getStore(),
          statusCode: res.statusCode,
          end: process.hrtime.bigint(),
        });
      });
    }
    return emit.apply(this, args);
  }
  http.Server.prototype.emit = wrappedEmit;

  return () => {
    http.Server.prototype.emit = emit;
  };
}

function diagnostics_channel() {
  const als = new AsyncLocalStorage();