[Typescript] Constraining Types for Anything but null or undefined (T extends {})

export type Maybe<T extends {}> = T | null | undefined;

type tests = [
  // @ts-expect-error
  Maybe<null>,
  // @ts-expect-error
  Maybe<undefined>,

  Maybe<string>,
  Maybe<false>,
  Maybe<0>,
  Maybe<"">
];

 

posted @   Zhentiw  阅读(17)  评论(0编辑  收藏  举报
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