message: refactor: use tuple to avoid type redundancy
diff: @@ -4,6 +4,8 @@ import { computed as iComputed } from '@ember/object';
  import { alias as iAlias } from '@ember/object/computed';
  import { buildValidations, validator } from 'ember-cp-validations';
  +import tuple from 'ember-osf-web/utils/tuple';
  +
  import Collection, { ChoicesFields } from './collection';
  import Guid from './guid';
  import OsfModel from './osf-model';
  @@ -15,20 +17,13 @@ export interface DisplaySubject {
  path: string;
  }
  -export type ChoiceFields =
  - 'collectedType' |
  - 'issue' |
  - 'programArea' |
  - 'status' |
  - 'volume';
  -
  -export const choiceFields: ChoiceFields[] = [
  +export const choiceFields = tuple(
  'collectedType',
  'issue',
  'programArea',
  'status',
  'volume',
  -];
  +);
  const Validations = buildValidations({
  ...choiceFields.reduce((acc, val) => {
  