Web Component Libraries » Class Mixins » TypePoliciesMixin
Optional mixin which lets you declare type policies for a component’s query.
import { ApolloQueryElement } from '@apollo-elements/interfaces';
import { TypePoliciesMixin } from '@apollo-elements/mixins/type-policies-mixin';
export class HelloQueryElement extends TypePoliciesMixin(ApolloQueryElement) {
typePolicies = {
Greeting: {
fields: {
name(next) { return next ?? 'friend'; },
greeting(next) { return next ?? 'friend'; },
},
},
}
}
Exports
js TypePoliciesMixin
from type-policies-mixin.js