Function validateOperations

packages/query-db-collection/src/manual-sync.ts:107–136

(
  operations: Array<NormalizedOperation<TRow, TKey>>,
  ctx: SyncContext<TRow, TKey>,
)

// Validate operations before executing
function validateOperations<
  TRow extends object,
  TKey extends string | number = string | number,
>(
  operations: Array<NormalizedOperation<TRow, TKey>>,
  ctx: SyncContext<TRow, TKey>,
): void {
  const seenKeys = new Set<TKey>()

  for (const op of operations) {
    // Check for duplicate keys within the batch
    if (seenKeys.has(op.key)) {
      throw new DuplicateKeyInBatchError(op.key)
    }
    seenKeys.add(op.key)

    // Validate operation-specific requirements
    // NOTE: These validations check the synced store only, not the combined view (synced + optimistic)
    // This allows write operations to work correctly even when items are optimistically modified
    if (op.type === `update`) {
      if (!ctx.collection._state.syncedData.has(op.key)) {
        throw new UpdateOperationItemNotFoundError(op.key)
      }
    } else if (op.type === `delete`) {
      if (!ctx.collection._state.syncedData.has(op.key)) {
        throw new DeleteOperationItemNotFoundError(op.key)
      }
    }
  }
}

// Execute a batch of operations
export function performWriteOperations<