Unable to Construct Stacked Vue-ChartJS Line Plot - vue.js

Question

I'm trying to make a stacked line chart using Vue-ChartJS but am having difficulties getting it to stack.
I tried adding the following into the fill data function but saw no change.
scales: {
yAxes: [{ stacked: true}]
}
I also tried creating a this.options entry but that didn't work either. The minimal reproducible code for the chart is as follows, any advice or help would be much appreciated!
## LineChart.js
import { Line, mixins } from 'vue-chartjs'
const { reactiveProp } = mixins
export default {
extends: Line,
mixins: [reactiveProp],
props: ['options'],
mounted() {
this.renderChart(this.chartData, this.options)
}
}
## LineChart.vue
<template>
<div class="small">
<line-chart :chart-data="chartData"></line-chart>
<button #click="fillData()">Randomize</button>
</div>
</template>
<script>
import LineChart from '../store/LineChart.js'
export default {
components: {
LineChart
},
data() {
return {
chartData: null
}
},
mounted() {
this.fillData()
},
methods: {
fillData() {
this.chartData = {
labels: [this.getRandomInt(), this.getRandomInt()],
datasets: [
{
label: 'Data One',
backgroundColor: '#f87979',
data: [this.getRandomInt(), this.getRandomInt()]
},
{
label: 'Data Two',
backgroundColor: '#C23596',
data: [this.getRandomInt(), this.getRandomInt()]
}
]
}
},
getRandomInt() {
return Math.floor(Math.random() * (50 - 5 + 1)) + 5
}
}
}
</script>
<style>
.small {
max-width: 600px;
margin: 150px auto;
}
</style>

Answer 1

You need to pass scales in the options:
...
<div class="small">
<line-chart :chart-data="chartData" :options="options"></line-chart>
<button #click="fillData()">Randomize</button>
</div>
...
data() {
return {
chartData: null,
options: {
scales: {
yAxes: [
{
stacked: true
}
]
},
},
}
},