title: Trying to add angular material i don´t know how to fix this
body: <p>npm ERR! code ERESOLVE</p>
  <p>npm ERR! ERESOLVE could not resolve</p>
  <p>npm ERR! While resolving: codelyzer@0.0.28</p>
  <p>npm ERR! Found: tslint@6.1.3</p>
  <p>npm ERR! node_modules/tslint</p>
  <p>npm ERR!   dev tslint@&quot;~6.1.0&quot; from the root project</p>
  <p>npm ERR! Could not resolve dependency:</p>
  <p>npm ERR! peer tslint@&quot;^3.9.0&quot; from codelyzer@0.0.28</p>
  <p>npm ERR! node_modules/codelyzer</p>
  <p>npm ERR!   dev codelyzer@&quot;^0.0.28&quot; from the root project</p>
  <p>npm ERR! Conflicting peer dependency: tslint@3.15.1</p>
  <p>npm ERR! node_modules/tslint</p>
  <p>npm ERR!   peer tslint@&quot;^3.9.0&quot; from codelyzer@0.0.28</p>
  <p>npm ERR!   node_modules/codelyzer</p>
  <p>npm ERR!     dev codelyzer@&quot;^0.0.28&quot; from the root project</p>
  <p>npm ERR! Fix the upstream dependency conflict, or retry</p>
  <p>npm ERR! this command with --force, or --legacy-peer-deps</p>
  <p>npm ERR! to accept an incorrect (and potentially broken) dependency resolution.</p>