"token function">handler</span><span class="token punctuation">(</span><span class="token parameter">chart</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      chart<span class="token punctuation">.</span>data<span class="token punctuation">.</span>datasets<span class="token punctuation">.</span><span class="token function">forEach</span><span class="token punctuation">(</span><span class="token parameter">dataset</span> <span class="token operator">=></span> <span c