start.js

const concurrently = require("concurrently")

// By default, configure Bridgetown to use port 4001 so Browsersync can use 4000
// See also Browsersync settings in sync.js
const port = 4001

/////////////////
// Concurrently
/////////////////
concurrently(
  [
    { command: "yarn webpack-dev", name: "Webpack", prefixColor: "yellow" },
    { command: "sleep 4; yarn serve --port " + port, name: "Bridgetown", prefixColor: "green" },
    { command: "sleep 8; yarn sync", name: "Live", prefixColor: "blue" },
    { command: "sleep 12; yarn netlify-cms-proxy-server", name: "CMS", prefixColor: "red" }
  ],
  {
    restartTries: 3,
    killOthers: ["failure", "success"]
  }
).then(
  () => {
    console.log("Done.")
    console.log("\033[0G")
  },
  () => {}
)