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@ -7,7 +7,7 @@ export type Delta = { [key: string]: any | Delta | null };
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* @param deltas List of deltas to apply
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* @param deltas List of deltas to apply
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* @returns Mutated target
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* @returns Mutated target
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*/
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*/
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export function applyDeltas(base: any, ...deltas: any): any {
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export function applyDeltas(base: any, ...deltas: any[]): any {
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function applyDelta(base: any, delta: any): any {
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function applyDelta(base: any, delta: any): any {
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if(delta === null) return null;
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if(delta === null) return null;
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if(typeof base !== 'object' || base === null) return delta === undefined ? base : delta;
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if(typeof base !== 'object' || base === null) return delta === undefined ? base : delta;
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@ -15,13 +15,13 @@ export function applyDeltas(base: any, ...deltas: any): any {
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for(const key in delta) {
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for(const key in delta) {
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const val = delta[key];
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const val = delta[key];
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if(val === undefined) delete result[key];
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if(val === undefined) delete result[key];
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else if (typeof val === 'object' && val !== null && !(Array.isArray(val))) result[key] = applyDelta(result[key], val);
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else if(typeof val === 'object' && val !== null && !Array.isArray(val)) result[key] = applyDelta(result[key], val);
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else result[key] = val;
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else result[key] = val;
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}
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}
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return result;
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return result;
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}
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}
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for(let d of deltas) base = applyDeltas(base, d);
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for(const d of deltas.flat()) base = applyDelta(base, d?.delta ?? d);
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return base;
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return base;
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}
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}
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