deploy-dev.js

const nodemon = require("nodemon");
const knex = require("./server/database/knex");

const DELAY = 3000;

function testConnection() {
  return new Promise(resolve => {
    setTimeout(() => {
      console.log("Preping for development");
      console.log("Polling for DB Connection...");
      knex.migrate
        .latest()
        .then(resolve)
        .catch(err => {
          console.log(err);
          resolve(testConnection());
        });
    }, DELAY);
  });
}

// migrate db
testConnection()
  .then(() => {
    console.log("Migration and Seeds Finished");
  })
  // run server using nodemon
  .then(() => {
    nodemon({
      script: "./server/server.js",
      ext: "js json",
      ignore: ["src/"]
    });

    nodemon
      .on("start", function() {
        console.log("App has started");
      })
      .on("quit", function() {
        console.log("App has quit");
        process.exit();
      })
      .on("restart", function(files) {
        console.log("App restarted due to: ", files);
      });
  })
  .catch(err => {
    console.log(err);
    process.exit(1);
  });