Function nest

cli/run/batchWarnings.ts:289–306

(array: readonly T[], property: string)

}

function nest<T extends Record<string, any>>(array: readonly T[], property: string): Nested<T>[] {
	const nested: Nested<T>[] = [];
	const lookup = new Map<string, Nested<T>>();

	for (const item of array) {
		const key = item[property];
		getOrCreate(lookup, key, () => {
			const items = {
				items: [],
				key
			};
			nested.push(items);
			return items;
		}).items.push(item);
	}

	return nested;
}

function showTruncatedWarnings(warnings: readonly RollupLog[]): void {
	const nestedByModule = nest(warnings, 'id');