src/vs/editor/contrib/suggest/browser/completionModel.ts/CompletionModel/_compareCompletionItems
class CompletionModel:	private static _compareCompletionItems(a: StrictCompletionItem, b: StrictCompletionItem): number {
		if (a.score[0] > b.score[0]) {
			return -1;
		} else if (a.score[0] < b.score[0]) {
			return 1;
		} else if (a.distance < b.distance) {
			return -1;
		} else if (a.distance > b.distance) {
			return 1;
		} else if (a.idx < b.idx) {
			return -1;
		} else if (a.idx > b.idx) {
			return 1;
		} else {
			return 0;
		}
	}