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GenAI_Course / node_modules /graphql /jsutils /groupBy.mjs

node

d4b85c0 over 1 year ago

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/**
 * Groups array items into a Map, given a function to produce grouping key.
 */
export function groupBy(list, keyFn) {
  const result = new Map();

  for (const item of list) {
    const key = keyFn(item);
    const group = result.get(key);

    if (group === undefined) {
      result.set(key, [item]);
    } else {
      group.push(item);
    }
  }

  return result;
}

	/**
	* Groups array items into a Map, given a function to produce grouping key.
	*/
	export function groupBy(list, keyFn) {
	const result = new Map();

	for (const item of list) {
	const key = keyFn(item);
	const group = result.get(key);

	if (group === undefined) {
	result.set(key, [item]);
	} else {
	group.push(item);
	}
	}

	return result;
	}