<span class="token keyword">extends</span> <span class="token class-name">Component</span> <span class="token punctuation">{</span>
  @tracked value<span class="token punctuation">;</span>

  @action
  <span class="token function">updateValue</span><span class="token punctuation">(</span><span class="token parameter">event</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">this</span><span class="token punctuation">.</span>value <span clas