Function partition

packages/baseai/src/dev/utils/stream/stream.ts:490–501

(str: string, delimiter: string)

}

function partition(str: string, delimiter: string): [string, string, string] {
	const index = str.indexOf(delimiter);
	if (index !== -1) {
		return [
			str.substring(0, index),
			delimiter,
			str.substring(index + delimiter.length)
		];
	}

	return [str, '', ''];
}

/**
 * Most browsers don't yet have async iterable support for ReadableStream,