Using the decorator in VueJS Typescript allows you to easily define dynamic computed properties

On my hands is a component structured like this:

@Component({
    computed: {
        [this.stateModel]: {
            get() {
                return this.$store[this.stateModel];
            }
        }
    }
})
class Component extends Vue{
    @Prop({ default: '' }) private stateModel!: string;
}

I want to bind stateModel as a property while utilizing this component. This property should be a state field and needs to be injectable into the component. The issue arises when TypeScript throws an error stating:

Element implicitly has an 'any' type because type 'typeof globalThis' has no index signature.

I attempted to create an interface and designate it as computed, but that approach failed to resolve the error.

Your assistance on this matter would be greatly appreciated.

Answer №1

While attempting to utilize the this keyword within a computed property, I encountered two distinct errors.

The usage of 'this' is prohibited in a computed property name

'this' is automatically assigned the type 'any' due to the lack of a type annotation

As an alternative approach, consider implementing a watcher instead

import { Watch } from 'vue-property-decorator';

@Component
class Component extends Vue{
    ...

    @Watch('stateModel')
    stateModelHasChanged(newValue: number) {
      this.stateModel = this.$store[this.stateModel];
    }
    ...

}

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