()
| 220 | let tutorialInstance: Tutorial | null = null; |
| 221 | |
| 222 | export function getTutorial(): Tutorial { |
| 223 | if (!tutorialInstance) { |
| 224 | tutorialInstance = new Tutorial(); |
| 225 | } |
| 226 | return tutorialInstance; |
| 227 | } |
| 228 | |
| 229 | export function initTutorial(): void { |
| 230 | const tutorial = getTutorial(); |