How to import and use a custom Chart.js plugin in Nuxt? (Chartjs-vuejs v2.9.4)

I am trying to import a custom plugin into my chart.
Got this plugin from my previous question: Question
Its a plugin so that I can use Grace in my version of Chart.js.
The version of Chart.js I am using is V2.9.4. I am using vue-chartjs in Nuxt!.
Couldn't really find an answer anywhere else.

This is how it looks now

This is how I want it to look

Thanks in advance. :)

1. I made a Component called 'BarChart' in my Components folder.
2. I made a normal .vue file in my pages directory. In the <template> tag I added my <Barchart/> component.
3. In that same .vue file I added a script in the <script> tag.
4. The plugin code is included in the codes below, I didn't include it anywhere yet.

1. Barchart.vue (Component)

    <script>
    import {Bar} from "vue-chartjs";
    
    export default {
      extends: Bar,
      props: {
        data: {
          type: String,
          default: () => {},
        },
        options: {
          type: Object,
          default: () => {},
        },
      },
      computed: {
        Chart() {
          return['data', 'options'];
        },
      },
      mounted() {
        this.renderChart(this.data, this.options);
      },
    };
    </script>

2. .vue file (Include component)

    <div class="chart">
      <BarChart :data="barChartData" :options="barChartOptions" :height="200"/>
    </div>

3. .vue file (script tags)

    <script>
    import BarChart from "~/components/plugins/BarChart";
    
    export default {
      components: {
        BarChart,
      },
      data() {
        return {
          barChartData: {
            labels: ["Verzonden", "Ontvangen", "Geopend", "Kliks"],
            datasets: [
              {
                data: [25, 20, 20, 18],
                backgroundColor: [
                  '#7782FF',
                  '#403DD3',
                  '#FFB930',
                  '#00E437',
                ],
                barThickness : 50,
              },
            ],
          },
          barChartOptions: {
            responsive: true,
            legend: {
              display: false,
            },
            scales: {
              xAxes: [
                {
                  gridLines: {
                    display: false,
                  },
                  ticks: {
                    fontColor: "black",
                    fontSize: 14,
                  },
                },
              ],
              yAxes: [
                {
                  ticks: {
                    beginAtZero: true,
                    min: 0,
                    stepSize: 5,
                    fontColor: '#ABACB3',
                  },
                  gridLines: {
                    display: true,
                    borderDash: [4, 4],
                    color: '#EEEDFB',
                    drawBorder: false,
                  },
                },
              ],
            },
          },
        };
      },
    };
    </script>

4. Plugin code (where do I put this and how do I make it work?)

    const plugin = {
      id: "customScale",
      beforeLayout: (chart, options, c) => {
        let max = Number.MIN_VALUE;
        let min = Number.MAX_VALUE
        let grace = options.grace || 0
    
        chart.data.datasets.forEach((dataset) => {
          max = Math.max(max, Math.max(...dataset.data));
          min = Math.min(min, Math.min(...dataset.data))
        })
    
        if (typeof grace === 'string' && grace.includes('%')) {
          grace = Number(grace.replace('%', '')) / 100
    
          chart.options.scales.yAxes[0].ticks.suggestedMax = max + (max * grace)
          chart.options.scales.yAxes[0].ticks.suggestedMin = min - (min * grace)
    
        } else if (typeof grace === 'number') {
    
          chart.options.scales.yAxes[0].ticks.suggestedMax = max + grace
          chart.options.scales.yAxes[0].ticks.suggestedMin = min - grace
    
        }
    
      }
    }