title: update angular from 6.1 to 8.2
body: <p>While updating from angular 6 to 8, I am getting following messages.</p>
  
  <p>ng -v gives following,</p>
  
  <blockquote>
    <p>node 12.16.1<br>
    angular 6.1.2<br>
    typescript 3.6.4</p>
  </blockquote>
  
  <p>I am running command, ng update @angular/cli@8  @angular/core@8</p>
  
  <pre><code>packageGroup metadata of package @angular/cli is malformed. Ignoring.
  packageGroup metadata of package @angular/cli is malformed.
  packageGroup metadata of package @angular/cli is malformed. Ignoring.
  packageGroup metadata of package @angular/cli is malformed. Ignoring.
  packageGroup metadata of package @angular/cli is malformed.
  packageGroup metadata of package @angular/cli is malformed. Ignoring.
  packageGroup metadata of package @angular/cli is malformed. Ignoring.
  .3.1 || &gt;=4.0.0-beta &lt;6.0.0" (extended), would install "8.2.14").
                Package "codelyzer" has an incompatible peer dependency to "@angular/core" (requires 
  "^2.3.1 || &gt;=4.0.0-beta &lt;6.0.0" (extended), would install "8.2.14").
                Package "codelyzer" has an incompatible peer dependency to "@angular/platform-browser" 
  (requires "^2.3.1 || &gt;=4.0.0-beta &lt;6.0.0" (extended), would install "8.2.14").
                Package "codelyzer" has an incompatible peer dependency to "@angular/common" (requires 
  "^2.3.1 || &gt;=4.0.0-beta &lt;6.0.0" (extended), would install "8.2.14").
                Package "codelyzer" has an incompatible peer dependency to "@angular/platform-browser- 
  dynamic" (requires "^2.3.1 || &gt;=4.0.0-beta &lt;6.0.0" (extended), would install "8.2.14").
                Package "@angular/compiler-cli" has an incompatible peer dependency to "typescript" 
  (requires "&gt;=3.4 &lt;3.6", would install "3.6.4")
  </code></pre>