refactor: 💡 move date format helpers to core addon

addons/core/addon/helpers/format-date-iso-human.js

@@ -1,5 +1,9 @@
 import { helper } from '@ember/component/helper';
 
+/**
+ * Takes a `Date` instance and returns a string formatted in human-friendly
+ * ISO-ish, e.g. "2020-01-01 00:00:00".
+ */
 export default helper(function formatDateIsoHuman(params /*, hash*/) {
   return params[0]
     .toISOString()

addons/core/addon/helpers/format-date-iso.js

@@ -1,5 +1,9 @@
 import { helper } from '@ember/component/helper';
 
+/**
+ * Takes a `Date` instance and returns a string formatted in ISO,
+ * e.g. "2020-01-01T00:00:00.999Z".
+ */
 export default helper(function formatDateIso(params /*, hash*/) {
   return params[0].toISOString();
 });

addons/core/app/helpers/format-date-iso-human.js

@@ -0,0 +1 @@
+export { default, formatDateIsoHuman } from 'core/helpers/format-date-iso-human';

addons/core/app/helpers/format-date-iso.js

@@ -0,0 +1 @@
+export { default, formatDateIso } from 'core/helpers/format-date-iso';

addons/core/tests/integration/helpers/format-date-iso-human-test.js

@@ -6,7 +6,6 @@ import { hbs } from 'ember-cli-htmlbars';
 module('Integration | Helper | format-date-iso-human', function (hooks) {
   setupRenderingTest(hooks);
 
-  // Replace this with your real tests.
   test('it renders', async function (assert) {
     this.set('inputValue', new Date('2020-01-01T00:00:00.999Z'));
 

addons/core/tests/integration/helpers/format-date-iso-test.js

@@ -6,7 +6,6 @@ import { hbs } from 'ember-cli-htmlbars';
 module('Integration | Helper | format-date-iso', function (hooks) {
   setupRenderingTest(hooks);
 
-  // Replace this with your real tests.
   test('it renders', async function (assert) {
     this.set('inputValue', new Date('2020-01-01T00:00:00.999Z'));