Replace array by counter value in throttler

lib/services/throttler-stream.js

@@ -24,15 +24,15 @@ module.exports = class Throttler extends Transform {
             this.bytesPerSecondHistory.shift();
         }
 
-        const doesNotReachThreshold = [];
+        let doesNotReachThreshold = 0;
 
         for (const bytesPerSecond of this.bytesPerSecondHistory) {
             if (bytesPerSecond <= this.minimunBytesPerSecondThershold) {
-                doesNotReachThreshold.push(true);
+                doesNotReachThreshold += 1;
             }
         }
 
-        if (doesNotReachThreshold.length >= this.sampleLength) {
+        if (doesNotReachThreshold >= this.sampleLength) {
             clearInterval(this._interval);
             this.pgstream.emit('error', new Error('Connection closed by server: input data too slow'));
         }