feat: parse info data as numbers if possible and improve parsing

lib/individualCommands.js

@@ -116,36 +116,54 @@ Multi.prototype.quit = function quit () {
 function infoCallback (client) {
   return function (err, res) {
     if (err) {
-      client.serverInfo = {}
       return err
     }
 
-    const obj = {}
-    const lines = res.toString().split('\r\n')
-    var line, parts, subParts
+    if (typeof res !== 'string') {
+      res = res.toString()
+    }
 
-    for (var i = 0; i < lines.length; i++) {
-      parts = lines[i].split(':')
-      if (parts[1]) {
-        if (parts[0].indexOf('db') === 0) {
-          subParts = parts[1].split(',')
-          obj[parts[0]] = {}
-          for (line = subParts.pop(); line !== undefined; line = subParts.pop()) {
-            line = line.split('=')
-            obj[parts[0]][line[0]] = +line[1]
+    const obj = {}
+    const lines = res.split('\r\n')
+    var topic = ''
+
+    while (lines.length) {
+      const parts = lines.shift().split(':')
+      const key = parts[0]
+      if (parts.length === 1) {
+        if (key !== '') {
+          topic = key[2].toLowerCase() + key.substr(3)
+          obj[topic] = {}
+        }
+      } else {
+        const value = parts[1]
+        const part = obj[topic]
+        if (value === '') {
+          part[key] = ''
+        } else if (topic === 'keyspace' || topic === 'commandstats') {
+          const subParts = value.split(',')
+          part[key] = {}
+          while (subParts.length) {
+            const line = subParts.shift().split('=')
+            part[key][line[0]] = +line[1]
           }
         } else {
-          obj[parts[0]] = parts[1]
+          const num = +value
+          // A fast Number.isNaN check
+          // eslint-disable-next-line no-self-compare
+          if (num === num) {
+            part[key] = num
+          } else {
+            part[key] = value
+          }
         }
       }
     }
-    obj.versions = []
-    if (obj.redis_version) {
-      obj.redis_version.split('.').forEach((num) => {
-        obj.versions.push(+num)
-      })
+
+    if (obj.server && obj.server.redis_version) {
+      obj.server.version = obj.server.redis_version.split('.').map(Number)
     }
-    // Expose info key/values to users
+
     client.serverInfo = obj
     return res
   }