split helper with new line support

controllers.application\.js

import Controller from '@ember/controller';

export default class ApplicationController extends Controller {
  example = `This
message
seems
to
split
correctly`;
}

helpers.split\.js

import { helper } from '@ember/component/helper';

export default helper(function split([text, delimiter = ' '], { regexp }) {
  if (regexp) {
    delimiter = new RegExp(regexp);
  }
  return text.split(delimiter);
});

templates.application\.hbs

<ul>
  {{#each (split this.example regexp="\n") as |item|}}
    <li>{{item}}</li>
  {{/each}}
</ul>

twiddle\.json

{
  "version": "0.17.1",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js",
    "ember": "3.18.1",
    "ember-template-compiler": "3.18.1",
    "ember-testing": "3.18.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}