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- 将逻辑转移到Server端后，简化前端逻辑
31 lines
998 B
TypeScript
31 lines
998 B
TypeScript
/**
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* 判断某一值是否为非null对象
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*
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* @template T 泛型类型，用于推断目标对象的类型
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* @param value: 需要判断的值
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* @returns 如果值是非null对象则返回true，否则返回false
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*
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* @example
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* if (isObject<Product>(value)) value.id
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*/
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export const isObject = <T extends object>(value: unknown): value is T =>
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typeof value === 'object' && value !== null;
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/**
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* 判断某一值是否为非null对象组成的数组
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*
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* @template T 泛型类型，用于推断目标对象的类型
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* @param value: 需要判断的值
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* @returns 如果值是非null对象组成的数组则返回true，否则返回false
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*
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* @example
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* const data: unknown = [{ id: 1 }, { id: 2 }];
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* if (isArrayOfObject)<{ id: number }>(data) {
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* // TypeScript 知道 data 是 { id: number }[] 类型
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* console.log(data[0].id);
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* }
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*/
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export const isArrayOfObject = <T extends object>(arr: unknown): arr is T[] => {
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return Array.isArray(arr) && arr.every(isObject<T>);
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};
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