我有一系列這樣的路線：
export const routes = [
{ name: 'Home', component: HomeScreen },
{ name: 'CreateProgram', component: CreateProgramScreen },
{ name: 'AddExercises', component: AddExercisesScreen },
]
我想從路線的名稱以編程方式生成如下型別的別名：
type RouteNames = 'Home' | 'CreateProgram' | 'AddExercises'
uj5u.com熱心網友回復：
鍵入陣列as const，使其不會自動加寬，然后您可以使用[number]它的型別來獲取所有物件型別的聯合，然后訪問["name"]獲取name屬性的型別。
export const routes = [
{ name: 'Home', component: HomeScreen },
{ name: 'CreateProgram', component: CreateProgramScreen },
{ name: 'AddExercises', component: AddExercisesScreen },
] as const;
type RouteNames = (typeof routes)[number]["name"];
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