StartServer API get ENV=production instead development

[tavoli]

I am trying to use HMR with startServer, but so far I have not been successful. However I am noticing that my /snowpack/env.js is getting this:

export const MODE = "production";
export const NODE_ENV = "production";
export const SSR = false;

I think that's why import.meta.hot doesn't work as it should.
Am I forgetting something to make MODE = 'development'?
my loadConfiguration:

  try {
    config = await loadConfiguration("dev");
  } catch (errs) {
    console.log(errs);
    return;
  }

const snowpack = await startServer({ config });

[tavoli]

solutioned

[PaulMorel]

What was your solution?