title: Static variable in nodejs
body: <p>I am using ES6 style code within NodeJS.</p>
  <p>When trying to create a static variable I get an error.</p>
  <p>Code:</p>
  <pre><code>'use strict';
  
  module.exports =  class Count {
      static addToCounter() {
          //this.count = this.count + 1 || 1;
          this.count = this.count + 1;
          console.log(`count: `+this.count);
      }
      static count = &quot;&quot;;
  }
  </code></pre>
  <p>Error:</p>
  <pre><code>static count = &quot;&quot;;
                   ^
  
  SyntaxError: Unexpected token =
      at new Script (vm.js:74:7)
      at createScript (vm.js:246:10)
      at Object.runInThisContext (vm.js:298:10)
      at Module._compile (internal/modules/cjs/loader.js:646:28)
      at Object.Module._extensions..js (internal/modules/cjs/loader.js:689:10)
      at Module.load (internal/modules/cjs/loader.js:589:32)
      at tryModuleLoad (internal/modules/cjs/loader.js:528:12)
      at Function.Module._load (internal/modules/cjs/loader.js:520:3)
      at Module.require (internal/modules/cjs/loader.js:626:17)
      at require (internal/modules/cjs/helpers.js:20:18)
  </code></pre>
  <p>What is my mistake?</p>