[fix] Fixed firstMatch condition and startSliding params

lib/errorsHelper.js

@@ -1,4 +1,4 @@
-const returnError = (code, message) => {
+const createError = (code, message) => {
 	return {
 		err: message,
 		code
@@ -6,9 +6,9 @@ const returnError = (code, message) => {
 }
 
 const errors = {
-	'WIN_TOO_LARGE_HOST': returnError('WIN_TOO_LARGE_HOST', 'Window size is larger than host object'),
-	'WIN_TOO_LARGE_GUEST': returnError('WIN_TOO_LARGE_GUEST', 'Window size is larger than guest object'),
-	'COULD_NOT_SLIDE': returnError('COULD_NOT_SLIDE', 'Could not slide into position for given window')
+	'WIN_TOO_LARGE_HOST': createError('WIN_TOO_LARGE_HOST', 'Window size is larger than host object'),
+	'WIN_TOO_LARGE_GUEST': createError('WIN_TOO_LARGE_GUEST', 'Window size is larger than guest object'),
+	'COULD_NOT_SLIDE': createError('COULD_NOT_SLIDE', 'Could not slide into position for given window')
 };
 
 module.exports = errors;

lib/slideHelper.js

@@ -29,12 +29,12 @@ const startSliding = (k, predicate, host, guest, window, windowPos) => {
 	const firstMatch = host.findIndex(wrap(test, window[0]));
 
 	// If first item returns a match, then continue to slideNext()
-	const len = firstMatch ? slideNext(host, guest, firstMatch, windowPos) : undefined;
+	const len = (firstMatch !== -1) ? slideNext(host, guest, firstMatch, windowPos) : undefined;
 	if (len && len > 1) return converter(firstMatch, windowPos, len);
 
 	const nextWindowPos = windowPos + 1;
 	const newWindow = guest.slice(nextWindowPos, nextWindowPos + k);
-	if (newWindow.length === k) return startSliding(newWindow, nextWindowPos);
+	if (newWindow.length === k) return startSliding(k, predicate, host, guest, newWindow, nextWindowPos);
 
 	return errors.COULD_NOT_SLIDE;