27 lines
743 B
TypeScript
27 lines
743 B
TypeScript
// @ts-nocheck
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/**
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* 返回第一个非空值。
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* - 跳过 null、undefined
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* - 对字符串类型，额外跳过空字符串 ''
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* - 保留 0、false 等类型合法值
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*/
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// #ifdef UNI-APP-X && APP
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export function coalesce<T>(...values : (any | null)[]) : T | null {
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for (const value of values) {
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if (value == null) continue;
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if (typeof value == 'string' && value == '') continue;
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return value as T;
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}
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return null;
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}
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// #endif
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// #ifndef UNI-APP-X && APP
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export function coalesce<T>(...values : (T | null | undefined)[]) : T | null {
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for (const value of values) {
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if (value == null || value === undefined) continue;
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if (typeof value === 'string' && value === '') continue;
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return value as T;
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}
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return null;
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}
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// #endif
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