Vue Component for 5 star rating

AppStartRating.vue

<template>
  <div class="product-rating" :class="{'product-rating--invalid': ratingIsNan}">
    <div class="product-rating__value-cutoff" :style="`width: ${cutoffWidth}%;`">
      <img class="product-rating__star" :class="{'product-rating__star--small': isSmall}" src="/icon/star.svg" />
      <img class="product-rating__star" :class="{'product-rating__star--small': isSmall}" src="/icon/star.svg" />
      <img class="product-rating__star" :class="{'product-rating__star--small': isSmall}" src="/icon/star.svg" />
      <img class="product-rating__star" :class="{'product-rating__star--small': isSmall}" src="/icon/star.svg" />
      <img class="product-rating__star" :class="{'product-rating__star--small': isSmall}" src="/icon/star.svg" />
    </div>
  </div>
</template>

<script>
export default {
  props: {
    rating: {
      type: Number,
      default: 0,
      validator: (n) => (n >= 0 && n <= 5)
    },
    size: {
      type: String,
      default: 'md',
      validator: (s) => (s === 'sm' || s === 'md')
    }
  },
  computed: {
    ratingIsNan () {
      return isNaN(this.rating)
    },
    cutoffWidth () {
      if (this.ratingIsNan) return 100
      return (this.rating/5) * 100
    },
    isSmall () {
      return this.size === 'sm'
    }
  }
}
</script>

<style lang="postcss" scoped>
.product-rating {
  @apply whitespace-no-wrap;

  &__star {
    @apply h-8 w-8 inline-block;

    &--small {
      @apply h-4 w-4;
    }
  }

  &__value-cutoff {
    @apply overflow-x-hidden;
  }

  &--invalid {
    filter: grayscale(1);
  }
}
</style>