apollo-angular
Version:
Use your GraphQL data in your Angular app, with the Apollo Client
46 lines • 5.32 kB
JavaScript
import { Kind, OperationTypeNode } from 'graphql';
import { ApolloError } from '@apollo/client/core';
import { getMainDefinition } from '@apollo/client/utilities';
const isApolloError = (err) => err && err.hasOwnProperty('graphQLErrors');
export class TestOperation {
operation;
observer;
constructor(operation, observer) {
this.operation = operation;
this.observer = observer;
}
flush(result) {
if (isApolloError(result)) {
this.observer.error(result);
}
else {
const fetchResult = result ? { ...result } : result;
this.observer.next(fetchResult);
const definition = getMainDefinition(this.operation.query);
if (definition.kind === Kind.OPERATION_DEFINITION &&
definition.operation !== OperationTypeNode.SUBSCRIPTION) {
this.complete();
}
}
}
complete() {
this.observer.complete();
}
flushData(data) {
this.flush({
data,
});
}
networkError(error) {
const apolloError = new ApolloError({
networkError: error,
});
this.flush(apolloError);
}
graphqlErrors(errors) {
this.flush({
errors,
});
}
}
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