前端初始化

node_modules/element-plus/lib/utils/vue/props/util.d.ts

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+//#region ../../packages/utils/vue/props/util.d.ts
+type Writable<T> = { -readonly [P in keyof T]: T[P] };
+type WritableArray<T> = T extends readonly any[] ? Writable<T> : T;
+type IfNever<T, Y = true, N = false> = [T] extends [never] ? Y : N;
+type IfUnknown<T, Y, N> = [unknown] extends [T] ? Y : N;
+type UnknownToNever<T> = IfUnknown<T, never, T>;
+//#endregion
+export { IfNever, IfUnknown, UnknownToNever, Writable, WritableArray };