Is it possible to incorporate an "interface subtype" into a component, such as this:
@Component
export default class Graph extends Vue
{
@Prop ()
public data: Array<Graph.Data> ;
}
which includes a sub-interface like:
export interface Data
{
time: Date
value: number
}
to ensure that the caller provides correctly formatted props:
<graph :data="data" />
where data must be of type Array<Graph.Data>.
Any suggestions or thoughts on how to achieve this?
Even though TypeScript does not directly support inner interfaces, you can utilize namespace/module to achieve the desired outcome:
@Component
class Graph extends Vue {
@Prop()
public data: Array<Graph.Data>;
}
namespace Graph {
export interface Data {
time: Date;
value: number;
};
}
export default Graph;
// Sample variable for demonstration
var someData: Array<Graph.Data> = [];
For a detailed showcase, check out this TypeScript playground demo.
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