Get the first sentence in a string

firstSentence.js

function firstSentence (s, maxCt) {
	var segmenter = new Intl.Segmenter (undefined, {granularity: "sentence"});
	var iterator = segmenter.segment (s) [Symbol.iterator] ();
	var item = iterator.next ();
	var result = "";
	if (!item.done) {
		result = item.value.segment.trim ();
		if (result.length > maxCt) {
			result = result.substr (0, maxCt - 3);
			var ix = result.lastIndexOf (" ");
			if (ix > 0) {
				result = result.substr (0, ix);
				}
			result += "...";
			}
		}
	return (result);
	}