NodeJS – get multiple GCP values from Secret Manager and set as Environment Variables

I’m new to node/javascript and stuck on two main things:

1. Pass multiple secret names with values from module to app.
2. Using the secret names and values, create env vars for the app to use.

NodeJS version: v19.5.0

Everything on the GCP backend is configured and I don’t want to use .env files.

getSecrets.js

'use strict';

const secretsArray = [ 'SECRET_1', 'SECRET_2', 'SECRET_3' ]

const parent = 'projects/some-project';

// Imports the Secret Manager library
const {SecretManagerServiceClient} = require('@google-cloud/secret-manager');

// Instantiates a client
const client = new SecretManagerServiceClient();

secretsArray.forEach((secret) => {

  async function getSecret() {

    const [version] = await client.accessSecretVersion({
      name: `${parent}/secrets/${secret}/versions/latest`,
    });

    const payload = version.payload.data.toString();

    console.log(`${secret} = ${payload}`);

  }

  getSecret();

});

This works by itself and returns three lines for each of the secrets:

SECRET_1 = randomString1
SECRET_2 = randomString2
SECRET_3 = randomString3

Tried wrapping the forEach loop in:

module.exports = () => {
  return new Promise((resolve) => {
    <forEach block>
  });
}

with a new entry point: app.js

const express = require("express");
const cors = require("cors");
const getSecrets = require("./getSecrets");

const app = express();
app.use(cors());

app.listen(4000, async () => {
  try {
    console.log(await getSecrets());

  } catch (error) {
    console.log("Error in setting environment variables", error);
    process.exit(-1);
  }
});

When I run it, I only get one line for the last secret in the list:

SECRET_3 = randomString3

I’ve tried adding the values from each loop to a new array and sending that over, but it didn’t work for me. Or is there an entirely different approach that would be better?