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不使用 ReturnType 实现 TypeScript 的 ReturnType<T> 泛型
ReturnType
ReturnType<T>
type MyReturnType<T> = T extends (...args: any[]) => infer R ? R : never; const fn = (v: boolean) => { if (v) return 1 else return 2 } type a = MyReturnType<typeof fn> // 应推导出 "1 | 2"
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不使用
ReturnType
实现 TypeScript 的ReturnType<T>
泛型The text was updated successfully, but these errors were encountered: