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    <title>DEV Community: Federico</title>
    <description>The latest articles on DEV Community by Federico (@fedecroletti).</description>
    <link>https://dev.to/fedecroletti</link>
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      <title>DEV Community: Federico</title>
      <link>https://dev.to/fedecroletti</link>
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    <item>
      <title>How to Delete Multiple Instagram Comments at Once with a JavaScript Script</title>
      <dc:creator>Federico</dc:creator>
      <pubDate>Sat, 29 Nov 2025 09:34:57 +0000</pubDate>
      <link>https://dev.to/fedecroletti/how-to-delete-multiple-instagram-comments-at-once-with-a-javascript-script-2kdc</link>
      <guid>https://dev.to/fedecroletti/how-to-delete-multiple-instagram-comments-at-once-with-a-javascript-script-2kdc</guid>
      <description>&lt;h1&gt;
  
  
  How to Delete Multiple Instagram Comments at Once Using JavaScript
&lt;/h1&gt;

&lt;h2&gt;
  
  
  &lt;strong&gt;Introduction&lt;/strong&gt;
&lt;/h2&gt;

&lt;p&gt;Instagram doesn’t provide a native option to delete multiple comments at once. If you have hundreds of spam or unwanted comments, doing it manually is a nightmare.&lt;br&gt;&lt;br&gt;
In this article, I’ll show you a simple JavaScript script that automates the process directly from your browser.&lt;/p&gt;


&lt;h2&gt;
  
  
  &lt;strong&gt;Why This Script?&lt;/strong&gt;
&lt;/h2&gt;

&lt;ul&gt;
&lt;li&gt;Instagram only allows manual comment deletion.&lt;/li&gt;
&lt;li&gt;This script simulates clicks on Instagram’s web interface.&lt;/li&gt;
&lt;li&gt;You can delete comments in &lt;strong&gt;batches&lt;/strong&gt; (e.g., 20 at a time).&lt;/li&gt;
&lt;/ul&gt;


&lt;h2&gt;
  
  
  &lt;strong&gt;Before You Start&lt;/strong&gt;
&lt;/h2&gt;

&lt;p&gt;You need to use &lt;strong&gt;Instagram Web&lt;/strong&gt; from a computer. Here’s what to do:&lt;/p&gt;

&lt;ol&gt;
&lt;li&gt;Open your &lt;strong&gt;browser&lt;/strong&gt; (Chrome, Edge, Firefox).&lt;/li&gt;
&lt;li&gt;Go to Instagram Web and &lt;strong&gt;log in&lt;/strong&gt;.&lt;/li&gt;
&lt;li&gt;Navigate to &lt;strong&gt;Your Activity → Comments&lt;/strong&gt; (this is where Instagram lists all your comments).&lt;/li&gt;
&lt;li&gt;Open the &lt;strong&gt;Developer Tools Console&lt;/strong&gt;:

&lt;ul&gt;
&lt;li&gt;Press &lt;strong&gt;F12&lt;/strong&gt; or &lt;strong&gt;Ctrl + Shift + I&lt;/strong&gt; (Windows) / &lt;strong&gt;Cmd + Option + I&lt;/strong&gt; (Mac).&lt;/li&gt;
&lt;li&gt;Click on the &lt;strong&gt;Console&lt;/strong&gt; tab.&lt;/li&gt;
&lt;/ul&gt;
&lt;/li&gt;
&lt;/ol&gt;


&lt;h2&gt;
  
  
  &lt;strong&gt;The Script&lt;/strong&gt;
&lt;/h2&gt;

&lt;p&gt;Paste this script into the console and press &lt;strong&gt;Enter&lt;/strong&gt;:&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight javascript"&gt;&lt;code&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="k"&gt;async &lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="kd"&gt;function&lt;/span&gt; &lt;span class="nf"&gt;simulateClick&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;el&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
        &lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;evt&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nc"&gt;MouseEvent&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;click&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="na"&gt;bubbles&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="na"&gt;cancelable&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="na"&gt;view&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="nb"&gt;window&lt;/span&gt; &lt;span class="p"&gt;});&lt;/span&gt;
        &lt;span class="nx"&gt;el&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;dispatchEvent&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;evt&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
    &lt;span class="p"&gt;}&lt;/span&gt;

    &lt;span class="k"&gt;async&lt;/span&gt; &lt;span class="kd"&gt;function&lt;/span&gt; &lt;span class="nf"&gt;deleteBatch&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;batchSize&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="mi"&gt;20&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
        &lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;selectBtn&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nb"&gt;Array&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="k"&gt;from&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nb"&gt;document&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;querySelectorAll&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;span&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;))&lt;/span&gt;
            &lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;find&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;el&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="nx"&gt;el&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;textContent&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;trim&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="o"&gt;===&lt;/span&gt; &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;Select&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
        &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;selectBtn&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="nf"&gt;simulateClick&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;selectBtn&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;parentElement&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;

        &lt;span class="k"&gt;await&lt;/span&gt; &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nc"&gt;Promise&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;r&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="nf"&gt;setTimeout&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;r&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="mi"&gt;1500&lt;/span&gt;&lt;span class="p"&gt;));&lt;/span&gt;

        &lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;checkboxes&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nb"&gt;Array&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="k"&gt;from&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nb"&gt;document&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;querySelectorAll&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;[data-testid="bulk_action_checkbox"] [role="button"]&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;));&lt;/span&gt;
        &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;checkboxes&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;length&lt;/span&gt; &lt;span class="o"&gt;===&lt;/span&gt; &lt;span class="mi"&gt;0&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="k"&gt;return&lt;/span&gt; &lt;span class="kc"&gt;false&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;

        &lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;batch&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;checkboxes&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;slice&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="mi"&gt;0&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;batchSize&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
        &lt;span class="k"&gt;for &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="kd"&gt;let&lt;/span&gt; &lt;span class="nx"&gt;i&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="mi"&gt;0&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt; &lt;span class="nx"&gt;i&lt;/span&gt; &lt;span class="o"&gt;&amp;lt;&lt;/span&gt; &lt;span class="nx"&gt;batch&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;length&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt; &lt;span class="nx"&gt;i&lt;/span&gt;&lt;span class="o"&gt;++&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
            &lt;span class="nf"&gt;simulateClick&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;batch&lt;/span&gt;&lt;span class="p"&gt;[&lt;/span&gt;&lt;span class="nx"&gt;i&lt;/span&gt;&lt;span class="p"&gt;]);&lt;/span&gt;
            &lt;span class="k"&gt;await&lt;/span&gt; &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nc"&gt;Promise&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;r&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="nf"&gt;setTimeout&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;r&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="mi"&gt;300&lt;/span&gt;&lt;span class="p"&gt;));&lt;/span&gt;
        &lt;span class="p"&gt;}&lt;/span&gt;

        &lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;deleteBtn&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="k"&gt;await&lt;/span&gt; &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nc"&gt;Promise&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;resolve&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
            &lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;interval&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nf"&gt;setInterval&lt;/span&gt;&lt;span class="p"&gt;(()&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
                &lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;btn&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nb"&gt;document&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;querySelector&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;[aria-label="Delete"]&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
                &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;btn&lt;/span&gt; &lt;span class="o"&gt;&amp;amp;&amp;amp;&lt;/span&gt; &lt;span class="o"&gt;!&lt;/span&gt;&lt;span class="nx"&gt;btn&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;hasAttribute&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;disabled&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;))&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
                    &lt;span class="nf"&gt;clearInterval&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;interval&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
                    &lt;span class="nf"&gt;resolve&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;btn&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
                &lt;span class="p"&gt;}&lt;/span&gt;
            &lt;span class="p"&gt;},&lt;/span&gt; &lt;span class="mi"&gt;500&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
        &lt;span class="p"&gt;});&lt;/span&gt;

        &lt;span class="nf"&gt;simulateClick&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;deleteBtn&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;

        &lt;span class="k"&gt;await&lt;/span&gt; &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nc"&gt;Promise&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;r&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="nf"&gt;setTimeout&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;r&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="mi"&gt;1500&lt;/span&gt;&lt;span class="p"&gt;));&lt;/span&gt;
        &lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;confirmBtn&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nb"&gt;Array&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="k"&gt;from&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nb"&gt;document&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;querySelectorAll&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;span&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;))&lt;/span&gt;
            &lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;find&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;el&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="nx"&gt;el&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;textContent&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;trim&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="o"&gt;===&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;Delete&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
        &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;confirmBtn&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="nf"&gt;simulateClick&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;confirmBtn&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;parentElement&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;

        &lt;span class="k"&gt;await&lt;/span&gt; &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nc"&gt;Promise&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;r&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="nf"&gt;setTimeout&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;r&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="mi"&gt;3000&lt;/span&gt;&lt;span class="p"&gt;));&lt;/span&gt;
        &lt;span class="k"&gt;return&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
    &lt;span class="p"&gt;}&lt;/span&gt;

    &lt;span class="k"&gt;await&lt;/span&gt; &lt;span class="nf"&gt;deleteBatch&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="mi"&gt;20&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
&lt;span class="p"&gt;})();&lt;/span&gt; 
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;h2&gt;
  
  
  &lt;strong&gt;How It Works&lt;/strong&gt;
&lt;/h2&gt;

&lt;p&gt;Activates the selection mode.&lt;br&gt;
Selects up to 20 comments (you can change this number).&lt;br&gt;
Clicks the Delete button when available.&lt;br&gt;
Confirms the deletion in the popup.&lt;/p&gt;




&lt;h2&gt;
  
  
  &lt;strong&gt;Customizations&lt;/strong&gt;
&lt;/h2&gt;

&lt;p&gt;batchSize: Change the number of comments to delete per cycle.&lt;br&gt;
Delays: If Instagram is slow, increase the setTimeout values.&lt;/p&gt;




&lt;h2&gt;
  
  
  &lt;strong&gt;Warnings&lt;/strong&gt;
&lt;/h2&gt;

&lt;p&gt;Works only on Instagram Web.&lt;br&gt;
Don’t abuse it: Instagram may temporarily block actions if they’re too fast.&lt;br&gt;
Use only on accounts you own.&lt;/p&gt;

</description>
      <category>instagram</category>
      <category>javascript</category>
    </item>
    <item>
      <title>Implementare Micro Frontend con Angular 19 e Module Federation: Shell + Runtime Integration</title>
      <dc:creator>Federico</dc:creator>
      <pubDate>Sat, 08 Nov 2025 00:53:52 +0000</pubDate>
      <link>https://dev.to/fedecroletti/implementare-micro-frontend-con-angular-19-e-module-federation-shell-runtime-integration-5d69</link>
      <guid>https://dev.to/fedecroletti/implementare-micro-frontend-con-angular-19-e-module-federation-shell-runtime-integration-5d69</guid>
      <description>&lt;h1&gt;
  
  
  Step 1: Creare la Shell
&lt;/h1&gt;

&lt;h3&gt;
  
  
  Genera il progetto principale:
&lt;/h3&gt;



&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight shell"&gt;&lt;code&gt;ng new shell-app &lt;span class="nt"&gt;--routing&lt;/span&gt; &lt;span class="nt"&gt;--style&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;scss
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;h3&gt;
  
  
  Aggiungi il supporto Module Federation:
&lt;/h3&gt;



&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight shell"&gt;&lt;code&gt;ng add @angular-architects/module-federation &lt;span class="nt"&gt;--type&lt;/span&gt; host &lt;span class="nt"&gt;--port&lt;/span&gt; 4200
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;h3&gt;
  
  
  Esempio di configurazione &lt;code&gt;webpack.config.js&lt;/code&gt;:
&lt;/h3&gt;



&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight javascript"&gt;&lt;code&gt;&lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;ModuleFederationPlugin&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nf"&gt;require&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;webpack/lib/container/ModuleFederationPlugin&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;

&lt;span class="nx"&gt;module&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;exports&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="na"&gt;output&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="na"&gt;publicPath&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;http://localhost:4200/&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
    &lt;span class="na"&gt;uniqueName&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;shell&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;
  &lt;span class="p"&gt;},&lt;/span&gt;
  &lt;span class="na"&gt;optimization&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="na"&gt;runtimeChunk&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;false&lt;/span&gt;
  &lt;span class="p"&gt;},&lt;/span&gt;
  &lt;span class="na"&gt;plugins&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;[&lt;/span&gt;
    &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nc"&gt;ModuleFederationPlugin&lt;/span&gt;&lt;span class="p"&gt;({&lt;/span&gt;
      &lt;span class="na"&gt;name&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;shell&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
      &lt;span class="na"&gt;remotes&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
        &lt;span class="na"&gt;mfeProduct&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;mfeProduct@http://localhost:4201/remoteEntry.js&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
        &lt;span class="na"&gt;mfeProfile&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;mfeProfile@http://localhost:4202/remoteEntry.js&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;
      &lt;span class="p"&gt;},&lt;/span&gt;
      &lt;span class="na"&gt;shared&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
        &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;@angular/core&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="na"&gt;singleton&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="na"&gt;strictVersion&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt; &lt;span class="p"&gt;},&lt;/span&gt;
        &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;@angular/common&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="na"&gt;singleton&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="na"&gt;strictVersion&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt; &lt;span class="p"&gt;},&lt;/span&gt;
        &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;@angular/router&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="na"&gt;singleton&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="na"&gt;strictVersion&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt; &lt;span class="p"&gt;}&lt;/span&gt;
      &lt;span class="p"&gt;}&lt;/span&gt;
    &lt;span class="p"&gt;})&lt;/span&gt;
  &lt;span class="p"&gt;]&lt;/span&gt;
&lt;span class="p"&gt;};&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;






&lt;h1&gt;
  
  
  Step 2: Creare un Remote
&lt;/h1&gt;

&lt;h3&gt;
  
  
  Genera un'app remota:
&lt;/h3&gt;



&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight shell"&gt;&lt;code&gt;ng new mfe-product &lt;span class="nt"&gt;--routing&lt;/span&gt; &lt;span class="nt"&gt;--style&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;scss
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;h3&gt;
  
  
  Configura &lt;code&gt;webpack.config.js&lt;/code&gt;:
&lt;/h3&gt;



&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight javascript"&gt;&lt;code&gt;&lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nc"&gt;ModuleFederationPlugin&lt;/span&gt;&lt;span class="p"&gt;({&lt;/span&gt;
  &lt;span class="na"&gt;name&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;mfeProduct&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
  &lt;span class="na"&gt;filename&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;remoteEntry.js&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
  &lt;span class="na"&gt;exposes&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;./ProductModule&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;./src/app/product/product.module.ts&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;
  &lt;span class="p"&gt;},&lt;/span&gt;
  &lt;span class="na"&gt;shared&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;@angular/core&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="na"&gt;singleton&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="na"&gt;strictVersion&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt; &lt;span class="p"&gt;},&lt;/span&gt;
    &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;@angular/common&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="na"&gt;singleton&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="na"&gt;strictVersion&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt; &lt;span class="p"&gt;}&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;
&lt;span class="p"&gt;});&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;






&lt;h2&gt;
  
  
  Step 3: Caricamento Dinamico (Runtime Integration)
&lt;/h2&gt;

&lt;p&gt;Usa il helper &lt;code&gt;loadRemoteModule&lt;/code&gt;:&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight typescript"&gt;&lt;code&gt;&lt;span class="k"&gt;import&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="nx"&gt;loadRemoteModule&lt;/span&gt; &lt;span class="p"&gt;}&lt;/span&gt; &lt;span class="k"&gt;from&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;@angular-architects/module-federation&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;

&lt;span class="k"&gt;export&lt;/span&gt; &lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;routes&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="nx"&gt;Routes&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="p"&gt;[&lt;/span&gt;
  &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="na"&gt;path&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;product&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
    &lt;span class="na"&gt;loadChildren&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt;
      &lt;span class="nf"&gt;loadRemoteModule&lt;/span&gt;&lt;span class="p"&gt;({&lt;/span&gt;
        &lt;span class="na"&gt;remoteEntry&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;http://localhost:4201/remoteEntry.js&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
        &lt;span class="na"&gt;remoteName&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;mfeProduct&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
        &lt;span class="na"&gt;exposedModule&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;./ProductModule&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;
      &lt;span class="p"&gt;}).&lt;/span&gt;&lt;span class="nf"&gt;then&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;m&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="nx"&gt;m&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;ProductModule&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;
&lt;span class="p"&gt;];&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;






&lt;h2&gt;
  
  
  Best Practice
&lt;/h2&gt;

&lt;ul&gt;
&lt;li&gt;
&lt;strong&gt;Standalone Components&lt;/strong&gt;: Angular 19 supporta componenti standalone, riducendo la complessità dei moduli.&lt;/li&gt;
&lt;li&gt;
&lt;strong&gt;Shared Dependencies&lt;/strong&gt;: Usa &lt;code&gt;singleton: true&lt;/code&gt; per Angular core/common/router.&lt;/li&gt;
&lt;li&gt;
&lt;strong&gt;Errori comuni&lt;/strong&gt;: Evita di condividere Angular come &lt;code&gt;peerDependency&lt;/code&gt; (può causare NG0200 Circular DI).&lt;/li&gt;
&lt;li&gt;
&lt;strong&gt;Nx Monorepo&lt;/strong&gt;: Per team grandi, Nx semplifica la gestione di più MFE con caching e generators.&lt;/li&gt;
&lt;/ul&gt;




&lt;h2&gt;
  
  
  Conclusione
&lt;/h2&gt;

&lt;p&gt;Con &lt;strong&gt;Angular 19&lt;/strong&gt; e &lt;strong&gt;Module Federation&lt;/strong&gt; puoi creare architetture scalabili, modulari e indipendenti. Questo setup permette:&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;Deploy indipendenti.&lt;/li&gt;
&lt;li&gt;Aggiornamenti rapidi.&lt;/li&gt;
&lt;li&gt;Riduzione dei conflitti tra team.&lt;/li&gt;
&lt;/ul&gt;

</description>
      <category>microfrontend</category>
      <category>modulefederation</category>
    </item>
    <item>
      <title>Architettura moderna dei frontend Leaflet-Angular App: Micro Frontend, Shell e Leaflet in Angular</title>
      <dc:creator>Federico</dc:creator>
      <pubDate>Fri, 24 Oct 2025 20:43:58 +0000</pubDate>
      <link>https://dev.to/fedecroletti/gestione-moderna-dei-frontend-con-micro-frontend-shell-e-leaflet-1901</link>
      <guid>https://dev.to/fedecroletti/gestione-moderna-dei-frontend-con-micro-frontend-shell-e-leaflet-1901</guid>
      <description>&lt;h2&gt;
  
  
  Architettura moderna dei frontend: Micro Frontend, Shell e Leaflet in Angular
&lt;/h2&gt;

&lt;h2&gt;
  
  
  Introduzione
&lt;/h2&gt;

&lt;p&gt;Nel contesto delle moderne applicazioni web, la crescente complessità e la necessità di scalabilità, manutenibilità e autonomia dei team hanno portato all'adozione di architetture distribuite anche nel frontend. I &lt;strong&gt;Micro Frontend&lt;/strong&gt; rappresentano un paradigma architetturale che consente di suddividere un'applicazione frontend in moduli indipendenti, ciascuno gestito da un team dedicato, con il proprio ciclo di vita, stack tecnologico e pipeline di rilascio.&lt;/p&gt;

&lt;p&gt;In questo articolo analizziamo come progettare un'architettura a micro frontend in &lt;strong&gt;Angular&lt;/strong&gt;, integrando una &lt;strong&gt;shell&lt;/strong&gt; principale con più MFE (Micro Frontend Applications), e focalizzandoci su un caso d'uso reale: la &lt;strong&gt;gestione di mappe interattive con Leaflet&lt;/strong&gt;.&lt;/p&gt;




&lt;h2&gt;
  
  
  Perché scegliere i Micro Frontend?
&lt;/h2&gt;

&lt;h3&gt;
  
  
  Vantaggi principali:
&lt;/h3&gt;

&lt;ul&gt;
&lt;li&gt;&lt;strong&gt;Autonomia dei team&lt;/strong&gt;&lt;/li&gt;
&lt;li&gt;&lt;strong&gt;Deploy indipendenti&lt;/strong&gt;&lt;/li&gt;
&lt;li&gt;&lt;strong&gt;Scalabilità tecnica e organizzativa&lt;/strong&gt;&lt;/li&gt;
&lt;li&gt;&lt;strong&gt;Manutenibilità&lt;/strong&gt;&lt;/li&gt;
&lt;li&gt;&lt;strong&gt;Tecnologie eterogenee&lt;/strong&gt;&lt;/li&gt;
&lt;li&gt;
&lt;strong&gt;Separazione dei domini funzionali&lt;/strong&gt; (es. mappa, filtri, analytics, utente)&lt;/li&gt;
&lt;/ul&gt;




&lt;h2&gt;
  
  
  Architettura generale: Shell + MFE
&lt;/h2&gt;

&lt;h3&gt;
  
  
  Shell
&lt;/h3&gt;

&lt;p&gt;La shell è l'applicazione contenitore che gestisce:&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;Il &lt;strong&gt;routing principale&lt;/strong&gt;
&lt;/li&gt;
&lt;li&gt;Il &lt;strong&gt;layout condiviso&lt;/strong&gt; (header, sidebar, footer)&lt;/li&gt;
&lt;li&gt;L'integrazione dinamica dei MFE (via &lt;strong&gt;Webpack Module Federation&lt;/strong&gt;)&lt;/li&gt;
&lt;li&gt;Lo &lt;strong&gt;stato globale&lt;/strong&gt; (NgRx, Redux, o soluzioni custom)&lt;/li&gt;
&lt;li&gt;L'autenticazione e la gestione dei permessi (es. Keycloak)&lt;/li&gt;
&lt;li&gt;La &lt;strong&gt;sessione utente condivisa&lt;/strong&gt;
&lt;/li&gt;
&lt;/ul&gt;

&lt;h3&gt;
  
  
  Micro Frontend (MFE)
&lt;/h3&gt;

&lt;p&gt;Ogni MFE è un'applicazione autonoma, con:&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;Routing interno&lt;/li&gt;
&lt;li&gt;Stato locale&lt;/li&gt;
&lt;li&gt;Componenti e servizi propri&lt;/li&gt;
&lt;li&gt;Pipeline CI/CD dedicata&lt;/li&gt;
&lt;li&gt;Traduzione (file i18n)&lt;/li&gt;
&lt;li&gt;Accesso alla sessione utente condivisa&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Esempi di MFE in un'app geografica:&lt;/strong&gt;&lt;/p&gt;

&lt;div class="table-wrapper-paragraph"&gt;&lt;table&gt;
&lt;thead&gt;
&lt;tr&gt;
&lt;th&gt;MFE&lt;/th&gt;
&lt;th&gt;Dominio funzionale&lt;/th&gt;
&lt;/tr&gt;
&lt;/thead&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td&gt;&lt;code&gt;mfe-map&lt;/code&gt;&lt;/td&gt;
&lt;td&gt;Rendering mappa Leaflet, layer WMS, POI&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;&lt;code&gt;mfe-filters&lt;/code&gt;&lt;/td&gt;
&lt;td&gt;Filtri geografici e tematici&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;&lt;code&gt;mfe-details&lt;/code&gt;&lt;/td&gt;
&lt;td&gt;Dettagli POI, schede info, media&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;&lt;code&gt;mfe-analytics&lt;/code&gt;&lt;/td&gt;
&lt;td&gt;Grafici, KPI, heatmap&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;&lt;code&gt;mfe-user&lt;/code&gt;&lt;/td&gt;
&lt;td&gt;Profilo utente, permessi, ruoli&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;&lt;/div&gt;




&lt;h2&gt;
  
  
  Integrazione tecnica con Angular e Module Federation
&lt;/h2&gt;

&lt;h3&gt;
  
  
  Configurazione base:
&lt;/h3&gt;



&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight javascript"&gt;&lt;code&gt;&lt;span class="c1"&gt;// webpack.config.js (esempio semplificato)&lt;/span&gt;
&lt;span class="nx"&gt;module&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;exports&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="na"&gt;plugins&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;[&lt;/span&gt;
    &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nc"&gt;ModuleFederationPlugin&lt;/span&gt;&lt;span class="p"&gt;({&lt;/span&gt;
      &lt;span class="na"&gt;name&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;shell&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
      &lt;span class="na"&gt;remotes&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
        &lt;span class="na"&gt;mfeMap&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;mfeMap@http://localhost:4201/remoteEntry.js&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
        &lt;span class="na"&gt;mfeFilters&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;mfeFilters@http://localhost:4202/remoteEntry.js&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
      &lt;span class="p"&gt;},&lt;/span&gt;
      &lt;span class="na"&gt;shared&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
        &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;@angular/core&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="na"&gt;singleton&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt; &lt;span class="p"&gt;},&lt;/span&gt;
        &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;@angular/common&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="na"&gt;singleton&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt; &lt;span class="p"&gt;},&lt;/span&gt;
        &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;@angular/router&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="na"&gt;singleton&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt; &lt;span class="p"&gt;},&lt;/span&gt;
      &lt;span class="p"&gt;},&lt;/span&gt;
    &lt;span class="p"&gt;}),&lt;/span&gt;
  &lt;span class="p"&gt;],&lt;/span&gt;
&lt;span class="p"&gt;};&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;h2&gt;
  
  
  Integrazione della libreria interna di widget
&lt;/h2&gt;

&lt;p&gt;Per garantire coerenza visiva e riuso dei componenti UI, è consigliabile creare una &lt;strong&gt;libreria interna&lt;/strong&gt; (es. &lt;code&gt;@company/widgets&lt;/code&gt;) contenente:&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;Componenti UI riutilizzabili (&lt;code&gt;Button&lt;/code&gt;, &lt;code&gt;Card&lt;/code&gt;, &lt;code&gt;Modal&lt;/code&gt;, &lt;code&gt;Table&lt;/code&gt;)&lt;/li&gt;
&lt;li&gt;Servizi comuni (&lt;code&gt;NotificationService&lt;/code&gt;, &lt;code&gt;ThemeService&lt;/code&gt;)&lt;/li&gt;
&lt;li&gt;Pipe e direttive condivise&lt;/li&gt;
&lt;/ul&gt;

&lt;h3&gt;
  
  
  Setup della libreria
&lt;/h3&gt;

&lt;ol&gt;
&lt;li&gt;Pubblicare la libreria su un registry privato (es. GitHub Packages, Verdaccio).&lt;/li&gt;
&lt;li&gt;Aggiungere come dipendenza npm in ogni MFE e nella Shell:&lt;/li&gt;
&lt;/ol&gt;

&lt;p&gt;npm install &lt;a class="mentioned-user" href="https://dev.to/company"&gt;@company&lt;/a&gt;/widgets&lt;/p&gt;

&lt;h3&gt;
  
  
  Configurazione delle porte locali
&lt;/h3&gt;

&lt;p&gt;Durante lo sviluppo, ogni MFE e la Shell girano su una porta diversa per facilitare il caricamento remoto via Module Federation.&lt;/p&gt;

&lt;div class="table-wrapper-paragraph"&gt;&lt;table&gt;
&lt;thead&gt;
&lt;tr&gt;
&lt;th&gt;Modulo&lt;/th&gt;
&lt;th&gt;Porta&lt;/th&gt;
&lt;th&gt;URL remoto&lt;/th&gt;
&lt;/tr&gt;
&lt;/thead&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td&gt;Shell&lt;/td&gt;
&lt;td&gt;4200&lt;/td&gt;
&lt;td&gt;&lt;a href="http://localhost:4200/" rel="noopener noreferrer"&gt;http://localhost:4200/&lt;/a&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;mfe-map&lt;/td&gt;
&lt;td&gt;4201&lt;/td&gt;
&lt;td&gt;&lt;a href="http://localhost:4201/remoteEntry.js" rel="noopener noreferrer"&gt;http://localhost:4201/remoteEntry.js&lt;/a&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;mfe-filters&lt;/td&gt;
&lt;td&gt;4202&lt;/td&gt;
&lt;td&gt;&lt;a href="http://localhost:4202/remoteEntry.js" rel="noopener noreferrer"&gt;http://localhost:4202/remoteEntry.js&lt;/a&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;mfe-details&lt;/td&gt;
&lt;td&gt;4203&lt;/td&gt;
&lt;td&gt;&lt;a href="http://localhost:4203/remoteEntry.js" rel="noopener noreferrer"&gt;http://localhost:4203/remoteEntry.js&lt;/a&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;mfe-analytics&lt;/td&gt;
&lt;td&gt;4204&lt;/td&gt;
&lt;td&gt;&lt;a href="http://localhost:4204/remoteEntry.js" rel="noopener noreferrer"&gt;http://localhost:4204/remoteEntry.js&lt;/a&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;mfe-user&lt;/td&gt;
&lt;td&gt;4205&lt;/td&gt;
&lt;td&gt;&lt;a href="http://localhost:4205/remoteEntry.js" rel="noopener noreferrer"&gt;http://localhost:4205/remoteEntry.js&lt;/a&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;&lt;/div&gt;

&lt;p&gt;Queste porte possono essere configurate nel file angular.json o tramite serve custom nei workspace multipli.&lt;/p&gt;

&lt;h3&gt;
  
  
  Comunicazione tra Shell e MFE tramite Event Bus
&lt;/h3&gt;

&lt;p&gt;Per una comunicazione decoupled e scalabile, si può implementare un Event Bus basato su RxJS o CustomEvent.&lt;/p&gt;

&lt;p&gt;Soluzione con RxJS (Shared Event Bus)&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight typescript"&gt;&lt;code&gt;&lt;span class="c1"&gt;// event-bus.service.ts&lt;/span&gt;
&lt;span class="p"&gt;@&lt;/span&gt;&lt;span class="nd"&gt;Injectable&lt;/span&gt;&lt;span class="p"&gt;({&lt;/span&gt; &lt;span class="na"&gt;providedIn&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;root&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt; &lt;span class="p"&gt;})&lt;/span&gt;
&lt;span class="k"&gt;export&lt;/span&gt; &lt;span class="kd"&gt;class&lt;/span&gt; &lt;span class="nc"&gt;EventBusService&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="k"&gt;private&lt;/span&gt; &lt;span class="nx"&gt;subject$&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nx"&gt;Subject&lt;/span&gt;&lt;span class="o"&gt;&amp;lt;&lt;/span&gt;&lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="na"&gt;type&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kr"&gt;string&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt; &lt;span class="nl"&gt;payload&lt;/span&gt;&lt;span class="p"&gt;?:&lt;/span&gt; &lt;span class="kr"&gt;any&lt;/span&gt; &lt;span class="p"&gt;}&lt;/span&gt;&lt;span class="o"&gt;&amp;gt;&lt;/span&gt;&lt;span class="p"&gt;();&lt;/span&gt;

  &lt;span class="nf"&gt;emit&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;event&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="nl"&gt;type&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kr"&gt;string&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt; &lt;span class="nl"&gt;payload&lt;/span&gt;&lt;span class="p"&gt;?:&lt;/span&gt; &lt;span class="kr"&gt;any&lt;/span&gt; &lt;span class="p"&gt;})&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;subject$&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;next&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;event&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;

  &lt;span class="nf"&gt;on&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="kd"&gt;type&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kr"&gt;string&lt;/span&gt;&lt;span class="p"&gt;):&lt;/span&gt; &lt;span class="nx"&gt;Observable&lt;/span&gt;&lt;span class="o"&gt;&amp;lt;&lt;/span&gt;&lt;span class="kr"&gt;any&lt;/span&gt;&lt;span class="o"&gt;&amp;gt;&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="k"&gt;return&lt;/span&gt; &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;subject$&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;asObservable&lt;/span&gt;&lt;span class="p"&gt;().&lt;/span&gt;&lt;span class="nf"&gt;pipe&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;
      &lt;span class="nf"&gt;filter&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;event&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="nx"&gt;event&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="kd"&gt;type&lt;/span&gt; &lt;span class="o"&gt;===&lt;/span&gt; &lt;span class="kd"&gt;type&lt;/span&gt;&lt;span class="p"&gt;),&lt;/span&gt;
      &lt;span class="nf"&gt;map&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;event&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="nx"&gt;event&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;payload&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
    &lt;span class="p"&gt;);&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;
&lt;span class="p"&gt;}&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;p&gt;Utilizzo&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight typescript"&gt;&lt;code&gt;&lt;span class="c1"&gt;// MFE emette evento&lt;/span&gt;
&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;eventBus&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;emit&lt;/span&gt;&lt;span class="p"&gt;({&lt;/span&gt; &lt;span class="na"&gt;type&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;poiSelected&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="na"&gt;payload&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="nx"&gt;poi&lt;/span&gt; &lt;span class="p"&gt;});&lt;/span&gt;

&lt;span class="c1"&gt;// Shell ascolta&lt;/span&gt;
&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;eventBus&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;on&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;poiSelected&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;).&lt;/span&gt;&lt;span class="nf"&gt;subscribe&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;poi&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;detailsService&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;loadDetails&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;poi&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
&lt;span class="p"&gt;});&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;h3&gt;
  
  
  Condivisione della sessione Keycloak tra Shell e MFE
&lt;/h3&gt;

&lt;p&gt;Soluzioni per la gestione della sessione utente con Keycloak&lt;/p&gt;

&lt;h4&gt;
  
  
  Shared Auth Service come singleton
&lt;/h4&gt;

&lt;p&gt;Una delle soluzioni più robuste per la gestione della sessione utente in un'architettura Micro Frontend è la definizione di un modulo auth-lib nella Shell, che espone un AuthService singleton contenente lo stato della sessione e i metodi di autenticazione.&lt;/p&gt;

&lt;h4&gt;
  
  
  Caratteristiche del modulo auth-lib
&lt;/h4&gt;

&lt;ul&gt;
&lt;li&gt;Stato della sessione utente (token, profilo, ruoli)&lt;/li&gt;
&lt;li&gt;Metodi login(), logout(), isAuthenticated(), getToken()&lt;/li&gt;
&lt;li&gt;Rinnovo automatico del token (es. con Keycloak JS Adapter)&lt;/li&gt;
&lt;li&gt;EventEmitter o Subject per notificare i MFE su cambiamenti di sessione&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;Esportazione via Module Federation&lt;br&gt;
Nel webpack.config.js della Shell:&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight typescript"&gt;&lt;code&gt;&lt;span class="c1"&gt;// webpack.config.js&lt;/span&gt;
&lt;span class="nx"&gt;shared&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;@my-org/auth-lib&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="nl"&gt;singleton&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
    &lt;span class="nx"&gt;strictVersion&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
    &lt;span class="nx"&gt;requiredVersion&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;auto&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
  &lt;span class="p"&gt;},&lt;/span&gt;
&lt;span class="p"&gt;}&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;p&gt;Importazione nei MFE&lt;br&gt;
Nel webpack.config.js del MFE:&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight typescript"&gt;&lt;code&gt;&lt;span class="nx"&gt;remotes&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="nl"&gt;shell&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;shell@http://localhost:4200/remoteEntry.js&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;
&lt;span class="p"&gt;}&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;p&gt;Nel codice Angular del MFE:&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight typescript"&gt;&lt;code&gt;&lt;span class="k"&gt;import&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;shell/AuthService&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;).&lt;/span&gt;&lt;span class="nf"&gt;then&lt;/span&gt;&lt;span class="p"&gt;(({&lt;/span&gt; &lt;span class="nx"&gt;AuthService&lt;/span&gt; &lt;span class="p"&gt;})&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;token&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;AuthService&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;getToken&lt;/span&gt;&lt;span class="p"&gt;();&lt;/span&gt;
  &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;AuthService&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;isAuthenticated&lt;/span&gt;&lt;span class="p"&gt;())&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="c1"&gt;// procedi con chiamate protette&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;
&lt;span class="p"&gt;});&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;h5&gt;
  
  
  Vantaggi
&lt;/h5&gt;

&lt;ul&gt;
&lt;li&gt;Centralizzazione della logica di sessione&lt;/li&gt;
&lt;li&gt;Singleton garantito tra Shell e MFE&lt;/li&gt;
&lt;li&gt;Decoupling funzionale: i MFE non gestiscono direttamente Keycloak&lt;/li&gt;
&lt;li&gt;Facile estensione: supporto a ruoli, permessi, refresh token, ecc.&lt;/li&gt;
&lt;/ul&gt;

&lt;h3&gt;
  
  
  Asset multimediali (immagini, icone, font)
&lt;/h3&gt;

&lt;ul&gt;
&lt;li&gt;Ogni MFE può servire i propri asset statici tramite il proprio assets/ locale.&lt;/li&gt;
&lt;li&gt;Per asset condivisi (es. logo, icone del design system), è consigliabile in una libreria condivisa.&lt;/li&gt;
&lt;/ul&gt;

&lt;h3&gt;
  
  
  Traduzioni i18n
&lt;/h3&gt;

&lt;h4&gt;
  
  
  Gestione delle traduzioni i18n con ngx-translate
&lt;/h4&gt;

&lt;p&gt;Una delle possibili soluzioni è il servizio ngx-translate&lt;/p&gt;

&lt;h5&gt;
  
  
  File di traduzione
&lt;/h5&gt;

&lt;p&gt;Ogni MFE può avere i propri file assets/i18n/en.json, it.json, ecc.&lt;/p&gt;

&lt;p&gt;Esempio it.json:&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight json"&gt;&lt;code&gt;&lt;span class="p"&gt;{&lt;/span&gt;&lt;span class="w"&gt;
  &lt;/span&gt;&lt;span class="nl"&gt;"LABEL"&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt;&lt;span class="w"&gt; &lt;/span&gt;&lt;span class="s2"&gt;"Etichetta"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;&lt;span class="w"&gt;
  &lt;/span&gt;&lt;span class="nl"&gt;"WELCOME"&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt;&lt;span class="w"&gt; &lt;/span&gt;&lt;span class="s2"&gt;"Benvenuto"&lt;/span&gt;&lt;span class="w"&gt;
&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;&lt;span class="w"&gt;
&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;h5&gt;
  
  
  Utilizzo nei template
&lt;/h5&gt;



&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight html"&gt;&lt;code&gt;&lt;span class="nt"&gt;&amp;lt;h1&amp;gt;&lt;/span&gt;{{ 'WELCOME' | translate }}&lt;span class="nt"&gt;&amp;lt;/h1&amp;gt;&lt;/span&gt;
&lt;span class="nt"&gt;&amp;lt;button&amp;gt;&lt;/span&gt;{{ 'LABEL' | translate }}&lt;span class="nt"&gt;&amp;lt;/button&amp;gt;&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;h5&gt;
  
  
  Cambio lingua runtime
&lt;/h5&gt;

&lt;p&gt;La Shell può gestire il cambio lingua e notificare i MFE tramite EventBus o servizio condiviso:&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight typescript"&gt;&lt;code&gt;&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;translate&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;use&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;it&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;p&gt;Oppure&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight typescript"&gt;&lt;code&gt;&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;eventBus&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;emit&lt;/span&gt;&lt;span class="p"&gt;({&lt;/span&gt; &lt;span class="na"&gt;type&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;localeChanged&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="na"&gt;payload&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;it&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt; &lt;span class="p"&gt;});&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;p&gt;I MFE ascoltano e aggiornano:&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight typescript"&gt;&lt;code&gt;&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;eventBus&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;on&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;localeChanged&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;).&lt;/span&gt;&lt;span class="nf"&gt;subscribe&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;locale&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;translate&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;use&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;locale&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
&lt;span class="p"&gt;});&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;p&gt;Questa architettura consente una gestione distribuita e coerente delle traduzioni, con supporto a localizzazione dinamica, modularità e autonomia dei team.&lt;/p&gt;

&lt;h3&gt;
  
  
  Architettura consigliata per chiamate API nei MFE
&lt;/h3&gt;

&lt;h4&gt;
  
  
  Facade per ogni MFE
&lt;/h4&gt;

&lt;p&gt;Ogni Micro Frontend dovrebbe avere un proprio servizio o facade che incapsula le chiamate al backend relative al suo dominio funzionale. Questo approccio garantisce:&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;Isolamento del dominio (es. PoiService, UserService, AnalyticsService)&lt;/li&gt;
&lt;li&gt;Testabilità e mocking facilitato&lt;/li&gt;
&lt;li&gt;Manutenibilità e coerenza interna&lt;/li&gt;
&lt;/ul&gt;

&lt;h4&gt;
  
  
  Interceptor condiviso
&lt;/h4&gt;

&lt;p&gt;Un HttpInterceptor comune, definito nella Shell o in una libreria condivisa, può essere utilizzato da tutti i MFE per:&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;Inserire il token JWT nella Authorization header&lt;/li&gt;
&lt;li&gt;Gestire gli errori globali (es. 401 → redirect, 403 → access denied, 500 → fallback UI)&lt;/li&gt;
&lt;li&gt;Loggare o tracciare le chiamate (es. OpenTelemetry, Sentry)
&lt;/li&gt;
&lt;/ul&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight typescript"&gt;&lt;code&gt;&lt;span class="p"&gt;@&lt;/span&gt;&lt;span class="nd"&gt;Injectable&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt;
&lt;span class="k"&gt;export&lt;/span&gt; &lt;span class="kd"&gt;class&lt;/span&gt; &lt;span class="nc"&gt;AuthInterceptor&lt;/span&gt; &lt;span class="k"&gt;implements&lt;/span&gt; &lt;span class="nx"&gt;HttpInterceptor&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="nf"&gt;intercept&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;req&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="nx"&gt;HttpRequest&lt;/span&gt;&lt;span class="o"&gt;&amp;lt;&lt;/span&gt;&lt;span class="kr"&gt;any&lt;/span&gt;&lt;span class="o"&gt;&amp;gt;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;next&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="nx"&gt;HttpHandler&lt;/span&gt;&lt;span class="p"&gt;):&lt;/span&gt; &lt;span class="nx"&gt;Observable&lt;/span&gt;&lt;span class="o"&gt;&amp;lt;&lt;/span&gt;&lt;span class="nx"&gt;HttpEvent&lt;/span&gt;&lt;span class="o"&gt;&amp;lt;&lt;/span&gt;&lt;span class="kr"&gt;any&lt;/span&gt;&lt;span class="o"&gt;&amp;gt;&amp;gt;&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;token&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;localStorage&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;getItem&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;kc_token&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
    &lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;authReq&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;req&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;clone&lt;/span&gt;&lt;span class="p"&gt;({&lt;/span&gt;
      &lt;span class="na"&gt;setHeaders&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="na"&gt;Authorization&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="s2"&gt;`Bearer &lt;/span&gt;&lt;span class="p"&gt;${&lt;/span&gt;&lt;span class="nx"&gt;token&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;&lt;span class="s2"&gt;`&lt;/span&gt; &lt;span class="p"&gt;}&lt;/span&gt;
    &lt;span class="p"&gt;});&lt;/span&gt;

    &lt;span class="k"&gt;return&lt;/span&gt; &lt;span class="nx"&gt;next&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;handle&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;authReq&lt;/span&gt;&lt;span class="p"&gt;).&lt;/span&gt;&lt;span class="nf"&gt;pipe&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;
      &lt;span class="nf"&gt;catchError&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;err&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
        &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;err&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;status&lt;/span&gt; &lt;span class="o"&gt;===&lt;/span&gt; &lt;span class="mi"&gt;401&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
          &lt;span class="c1"&gt;// redirect alla Shell per login&lt;/span&gt;
        &lt;span class="p"&gt;}&lt;/span&gt;
        &lt;span class="k"&gt;return&lt;/span&gt; &lt;span class="nf"&gt;throwError&lt;/span&gt;&lt;span class="p"&gt;(()&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="nx"&gt;err&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
      &lt;span class="p"&gt;})&lt;/span&gt;
    &lt;span class="p"&gt;);&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;
&lt;span class="p"&gt;}&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



</description>
      <category>angular</category>
      <category>microfrontend</category>
      <category>leaflet</category>
      <category>modulefederation</category>
    </item>
    <item>
      <title>Come strutturare un'app Angular scalabile nel 2025</title>
      <dc:creator>Federico</dc:creator>
      <pubDate>Fri, 24 Oct 2025 20:27:32 +0000</pubDate>
      <link>https://dev.to/fedecroletti/come-strutturare-unapp-angular-scalabile-nel-2025-4a7c</link>
      <guid>https://dev.to/fedecroletti/come-strutturare-unapp-angular-scalabile-nel-2025-4a7c</guid>
      <description>&lt;h1&gt;
  
  
  Come strutturare un'app Angular scalabile nel 2025
&lt;/h1&gt;

&lt;h2&gt;
  
  
  Introduzione
&lt;/h2&gt;

&lt;p&gt;Molti progetti Angular crescono rapidamente e diventano difficili da mantenere. In questo articolo vedremo come strutturare un'app scalabile e modulare, pronta per crescere nel tempo.&lt;/p&gt;

&lt;h2&gt;
  
  
  1. Modularizzazione
&lt;/h2&gt;

&lt;p&gt;Dividere l'app in moduli funzionali (feature modules) aiuta a mantenere il codice organizzato e a facilitare il lazy loading.&lt;/p&gt;

&lt;h2&gt;
  
  
  2. Lazy Loading
&lt;/h2&gt;

&lt;p&gt;Caricare i moduli solo quando necessari migliora le performance iniziali dell'app.&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight typescript"&gt;&lt;code&gt;&lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;routes&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="nx"&gt;Routes&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="p"&gt;[&lt;/span&gt;
  &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="na"&gt;path&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;cart&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
    &lt;span class="na"&gt;loadChildren&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="k"&gt;import&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;./features/cart/cart.module&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;).&lt;/span&gt;&lt;span class="nf"&gt;then&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;m&lt;/span&gt; &lt;span class="o"&gt;=&amp;gt;&lt;/span&gt; &lt;span class="nx"&gt;m&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;CartModule&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;
&lt;span class="p"&gt;];&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;h2&gt;
  
  
  3. Gestione dello stato con NgRx
&lt;/h2&gt;

&lt;p&gt;NgRx aiuta a centralizzare e prevedere lo stato dell'applicazione, utile in progetti complessi.&lt;/p&gt;

&lt;h2&gt;
  
  
  4. Testing
&lt;/h2&gt;

&lt;p&gt;Utilizza Jest per test unitari veloci e affidabili. Organizza i test per modulo.&lt;/p&gt;

&lt;h2&gt;
  
  
  5. Best Practice
&lt;/h2&gt;

&lt;ul&gt;
&lt;li&gt;Usa i servizi per la logica di business&lt;/li&gt;
&lt;li&gt;Evita logica nei componenti&lt;/li&gt;
&lt;li&gt;Usa i resolver per caricare dati prima della navigazione&lt;/li&gt;
&lt;li&gt;Documenta le decisioni architetturali&lt;/li&gt;
&lt;/ul&gt;

&lt;h2&gt;
  
  
  Conclusione
&lt;/h2&gt;

&lt;p&gt;Una buona struttura iniziale è fondamentale per la scalabilità. Investire tempo nella progettazione dell'architettura ripaga nel lungo periodo.&lt;/p&gt;




&lt;p&gt;&lt;em&gt;Autore: Federico Croletti – Senior Frontend Consultant&lt;/em&gt;&lt;/p&gt;

</description>
      <category>tutorial</category>
      <category>angular</category>
      <category>typescript</category>
      <category>architecture</category>
    </item>
    <item>
      <title>Split Draw Precision</title>
      <dc:creator>Federico</dc:creator>
      <pubDate>Fri, 25 Nov 2022 14:12:31 +0000</pubDate>
      <link>https://dev.to/fedecroletti/split-draw-precision-4i6j</link>
      <guid>https://dev.to/fedecroletti/split-draw-precision-4i6j</guid>
      <description>&lt;p&gt;Through the split function I divide a pre-selected polygonal area.&lt;/p&gt;

&lt;p&gt;But the precision is too strict and therefore the selection ends if the next selected point is too close&lt;br&gt;
&lt;a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fi37dbudp57q9vdictel6.png" class="article-body-image-wrapper"&gt;&lt;img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fi37dbudp57q9vdictel6.png" alt=" " width="344" height="441"&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;How do I set a different split precision?&lt;/p&gt;

</description>
      <category>openlayers</category>
    </item>
  </channel>
</rss>
