Merge pull request #9 from seidnerj/master

Added an option to filter out prereleases

Author: axelrindle

lib/check.js

@@ -80,6 +80,13 @@ const rest = (options, callback) => {
 			let version = null;
 			for (let i = 0; i < json.length; i++) {
 				version = json[i];
+
+				if (options.excludePrereleases) {
+					if(version['prerelease'] !== undefined && version['prerelease']) {
+						continue;
+					}
+				}
+
 				if (semver.gt(version[options.fetchTags ? 'name' : 'tag_name'], options.currentVersion)) {
 					found = true;
 					break;
@@ -161,6 +168,11 @@ module.exports = (options, callback) => {
 	// decide what to do
 	// when we have a token supplied, we will call the GraphQL api
 	if (options.token) {
+
+		if (options.excludePrereleases) {
+			throw new Error('excludePrereleases option currently unsupported when specifying a token.');
+		}
+
 		graphql(options, callback);
 	} else {
 		rest(options, callback);