title: Understanding why Prettier are breaking lines
body: <p>I have set line length to 140 and Prettier are still breaking this lines</p>
  
  <pre><code>private displayDetailsSource: BehaviorSubject&lt;boolean&gt; = new BehaviorSubject(false);
  displayDetailsObservable: Observable&lt;boolean&gt; = this.displayDetailsSource.asObservable();
  </code></pre>
  
  <p><strong>When I save:</strong></p>
  
  <pre><code>private displayDetailsSource: BehaviorSubject&lt;boolean&gt; = new BehaviorSubject(
      false
    );
    displayDetailsObservable: Observable&lt;
      boolean
    &gt; = this.displayDetailsSource.asObservable();
  </code></pre>
  
  <p>This makes the code very hard to read. I have default tslint in my angular project and line lengths set to 140 in the tslint file and in VS Code settings.</p>
  
  <p>I love Prettier but sometimes the rules can be tuff to understand</p>