Encountering TypeScript error in the beforeRouteUpdate hook with Vue and vue-property-decorator

I am developing an application using Vue 2 with TypeScript and vue-property-decorator. Within my component, I am utilizing the beforeRouteEnter/beforeRouteUpdate hooks. One of the methods in my component is findProjects, which I want to call within the beforeRouteUpdate hook.

The component code snippet looks like this:

import { Component, Vue, Mixins, Watch } from 'vue-property-decorator'
...
export default class ProjectSandboxTs extends Mixins(GlobalFilterMixin({})) {
  created() {...
  }

  clearInput() {...
  }

  findProjects() {
    const filter: IFilter = { ...this.modalFilterValues, ...this.filterValues }
    this.filterProjects(filter)
    this.displayProjects()
    this.isEmpty = this.filteredData.length === 0
  }

  filterProjects(filter: IFilter) {...
  }

When attempting to invoke the component's method within my hook, I encounter a TypeScript error:

beforeRouteUpdate(to, from, next) {
  if (!isEqual(to.query, from.query)) {
    this.findProjects() // <== Property 'findProjects' does not exist on type 'Vue'
  }
  next()
}

Any suggestions on how to resolve this issue?

Answer №1

The reason behind this is that TypeScript lacks knowledge about the type of instance that this will become. You can consider using a syntax similar to the following:

(this as ProjectSandboxTs).findProjects()

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