雨霖铃
22 lines
616 B
TypeScript
22 lines
616 B
TypeScript
/**
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* 从 localStorage 获取同步快照（用于消除异步加载产生的首屏闪烁）
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*/
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export function getSyncSnapshot<T>(
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key: string,
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defaultValue: T,
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validator?: (val: unknown) => val is T,
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): T {
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try {
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const val = localStorage.getItem(`snapshot/${key}`);
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if (!val) return defaultValue;
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const parsed = JSON.parse(val) as unknown;
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if (validator) {
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return validator(parsed) ? parsed : defaultValue;
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}
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return (parsed as T) ?? defaultValue;
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} catch (error) {
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console.error(`[SyncSnapshot] Failed to read snapshot/${key}:`, error);
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return defaultValue;
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}
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}
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