Exploring the intricacies of defining Vue component props in TypeScript using Vue.extend()

Here is a simple example to illustrate my question

When I directly define my props inside the component, everything works fine

<script lang="ts">
import Vue, { PropType } from "vue";
export default Vue.extend({
  props: {
    colorType: {
      default: "primary" as const,
      type: String as PropType<"primary" | "secondary" | "other">,
      validator: (value) => ["primary", "secondary", "other"].includes(value),
    },
  },
});
</script>

However, if I move the prop definition outside, it causes issues with TypeScript types

https://i.sstatic.net/MhuXs.png

<script lang="ts">
import Vue, { PropType } from "vue";

const colorType = {
  default: "primary" as const,
  type: String as PropType<"primary" | "secondary" | "other">,
  validator: (value) => ["primary", "secondary", "other"].includes(value),
};

export default Vue.extend({
  props: {
    colorType,
  },
});
</script>

I am looking for a way to share these prop type definitions across multiple Vue components without compromising TypeScript

Answer №1

const colorSetting = {
    docket: 'primary' as const,
    settingType: String,
    authenticate: (value) => ['primary', 'secondary', 'other'].includes(value),
} as PropValidator<'primary' | 'secondary' | 'other'>;

This solution seems effective

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