Provide option for disabling traffic reduction

See https://github.com/axelrindle/gvc-json-reduce for the related project

Author: Axel Rindle

examples/rest.js

@@ -1,9 +1,9 @@
 const versionCheck = require('../lib/main');
 const options = {
-  token: '',
   repo: 'github-version-checker',
   owner: 'axelrindle',
-  currentVersion: require('../package.json').version
+  currentVersion: require('../package.json').version,
+  reduceTraffic: false
 };
 
 versionCheck(options)

lib/check.js

@@ -3,6 +3,7 @@ const https = require('https');
 const github_graphql = require('github-graphql-client');
 const semver = require('semver');
 const query = require('./query');
+const pkg = require('../package.json');
 
 /**
  * Executes a GraphQL query on the API to fetch either the latest release or tag.
@@ -47,18 +48,12 @@ const graphql = (options, callback) => {
  * @param callback {function|undefined} The callback function.
 */
 const rest = (options, callback) => {
-  const apiUrl = `https://api.github.com/repos/${options.owner}/${options.repo}/releases`;
-  const opts = {
-    hostname: 'gvc-reduce-json.axelrindle.de',
-    path: '/?url=' + apiUrl,
-    method: 'GET'
-  };
-  const req = https.request(opts, res => {
+  const handler = res => {
     const chunks = [];
     res.on('data', chunk => {
       return chunks.push(chunk.toString());
     });
-    res.on('end', function() {
+    res.on('end', () => {
       // Make sure there are no errors and try to parse the response
       if (res.statusCode !== 200) {
         return callback(new Error(chunks), null);
@@ -88,8 +83,25 @@ const rest = (options, callback) => {
         callback(null, null);
       }
     });
-  });
-  req.on('error', function(err) {
+  };
+
+  const apiUrl = `https://api.github.com/repos/${options.owner}/${options.repo}/releases`;
+  let req;
+  if (options.reduceTraffic) {
+    const opts = {
+      hostname: 'gvc-reduce-json.axelrindle.de',
+      path: '/?url=' + apiUrl
+    };
+    req = https.get(opts, handler);
+  } else {
+    const opts = {
+      headers: {
+        'User-Agent': `${pkg.name} v${pkg.version}`
+      }
+    };
+    req = https.get(apiUrl, opts, handler);
+  }
+  req.on('error', err => {
     callback(err, null);
   });
   req.end();
@@ -106,6 +118,7 @@ const rest = (options, callback) => {
 module.exports = (options, callback) => {
   // get options
   options.token = options.token || process.env.GITHUB_API_TOKEN || undefined;
+  options.reduceTraffic = options.reduceTraffic !== undefined ? options.reduceTraffic : true;
 
   // check if required options are defined
   if (!options.repo) {