title: Handle null >= 0 in Typescript
body: <p>I have a simple check where I want to check if the given variable is &gt;=0.</p>
  <pre><code>public print(value: any): void {
      if(value &gt;= 0) {
        console.log('Greater than zero')
      }
    }
  </code></pre>
  <p>The catch here is when the incoming variable has value null, then it will become truthy and log the statement. Is there a clean way to avoid it, but not adding extra checks?</p>