15 lines
630 B
TypeScript
15 lines
630 B
TypeScript
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// Vergleicht die aktuelle Rezept-ID-Liste (vom Server) mit dem, was
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// der Cache schon hat. Der SW nutzt das Delta, um nur Neue zu laden
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// und Gelöschte abzuräumen.
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export type ManifestDiff = { toAdd: number[]; toRemove: number[] };
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export function diffManifest(currentIds: number[], cachedIds: number[]): ManifestDiff {
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const current = new Set(currentIds);
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const cached = new Set(cachedIds);
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const toAdd: number[] = [];
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const toRemove: number[] = [];
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for (const id of current) if (!cached.has(id)) toAdd.push(id);
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for (const id of cached) if (!current.has(id)) toRemove.push(id);
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return { toAdd, toRemove };
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}
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