computed property classes should declare a type, like this

computed: {
  classes ():any {
    return {
      "navbar--on-scroll": this.onScroll,
      "navbar--active": this.navbarActive
    }
  }
}

ref

• typescript - ( VUE Computed ) Property 'XXX' does not exist on type 'CreateComponentPublicInstance' - Stack Overflow

标签: this, any, type, not, a, computed, classes, property, onscroll

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