@loaders.gl/core/src/iterators/batch-iterators/timed-batch-iterator.ts

The core API for working with loaders.gl loaders and writers

// loaders.gl
// SPDX-License-Identifier: MIT
// Copyright (c) vis.gl contributors

/**
 * "Debounces" batches and returns them in groups
 */
export async function* timedBatchIterator<Batch>(
  batchIterator: AsyncIterable<Batch>,
  timeout: number
): AsyncIterable<Batch[]> {
  let start = Date.now();
  let batches: Batch[] = [];
  for await (const batch of batchIterator) {
    batches.push(batch);
    if (Date.now() - start > timeout) {
      yield batches;
      start = Date.now();
      batches = [];
    }
  }

  if (batches) {
    yield batches;
  }
}