This addon adds a delay (250ms by default) to initial application boot for certain builds; e.g. --environment=development by default.

This is useful in certain cases, such as giving Chrome enough time to load your Source Map files before your app boots and any debuggers are hit. (chromium#424191)

This manifests as your debugger statement getting stuck with:

// Please wait a bit.
// Compiled script is not shown while source map is being loaded!

• ember install:addon ember-cli-delay-app-boot

By default, a delay of 250ms is used only when --environment=development. You can change these options in your app's Brocfile.js:

var app = new EmberApp({
  'delay-app-boot': {
    // Delay in milliseconds
    delay: 250,
    // Array of environments that should have the boot delay
    environments: ['development']
  }
});

When you deploy to production using the --environment=production flag, this addon is inert and does not artificially slow down your app's boot time.

For more information on using ember-cli, visit http://www.ember-cli.com/.