@loaders.gl/core/dist/es6/lib/parse-in-batches.js

Framework-independent loaders for 3D graphics formats

import { isLoaderObject } from './loader-utils/normalize-loader';
import { mergeLoaderAndUserOptions } from './loader-utils/normalize-options';
import { getAsyncIteratorFromData } from './loader-utils/get-data';
import { getLoaderContext } from './loader-utils/get-loader-context';
import { selectLoader } from './select-loader';
export async function parseInBatches(data, loaders, options, url) {
  if (!Array.isArray(loaders) && !isLoaderObject(loaders)) {
    url = options;
    options = loaders;
    loaders = null;
  }

  const loader = selectLoader(loaders, url, null);
  options = mergeLoaderAndUserOptions(options, loader);
  const context = getLoaderContext({
    url
  }, options);
  return parseWithLoaderInBatches(loader, data, options, context);
}

function parseWithLoaderInBatches(loader, data, options, context) {
  if (loader.parseInBatches) {
    const inputIterator = getAsyncIteratorFromData(data);
    const outputIterator = loader.parseInBatches(inputIterator, options, context, loader);
    return outputIterator;
  }

  throw new Error('parseWithLoaderInBatchesSync not available');
}
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