apollo-angular
Version:
Use your GraphQL data in your Angular app, with the Apollo Client
88 lines • 11.6 kB
JavaScript
import { from, Observable } from 'rxjs';
import { NetworkStatus } from '@apollo/client/core';
import { fixObservable, wrapWithZone } from './utils';
function useInitialLoading(obsQuery) {
return function useInitialLoadingOperator(source) {
return new Observable(function useInitialLoadingSubscription(subscriber) {
const currentResult = obsQuery.getCurrentResult();
const { loading, errors, error, partial, data } = currentResult;
const { partialRefetch, fetchPolicy } = obsQuery.options;
const hasError = errors || error;
if (partialRefetch &&
partial &&
(!data || Object.keys(data).length === 0) &&
fetchPolicy !== 'cache-only' &&
!loading &&
!hasError) {
subscriber.next({
...currentResult,
loading: true,
networkStatus: NetworkStatus.loading,
});
}
return source.subscribe(subscriber);
});
};
}
export class QueryRef {
obsQuery;
valueChanges;
queryId;
constructor(obsQuery, ngZone, options) {
this.obsQuery = obsQuery;
const wrapped = wrapWithZone(from(fixObservable(this.obsQuery)), ngZone);
this.valueChanges = options.useInitialLoading
? wrapped.pipe(useInitialLoading(this.obsQuery))
: wrapped;
this.queryId = this.obsQuery.queryId;
}
// ObservableQuery's methods
get options() {
return this.obsQuery.options;
}
get variables() {
return this.obsQuery.variables;
}
result() {
return this.obsQuery.result();
}
getCurrentResult() {
return this.obsQuery.getCurrentResult();
}
getLastResult() {
return this.obsQuery.getLastResult();
}
getLastError() {
return this.obsQuery.getLastError();
}
resetLastResults() {
return this.obsQuery.resetLastResults();
}
refetch(variables) {
return this.obsQuery.refetch(variables);
}
fetchMore(fetchMoreOptions) {
return this.obsQuery.fetchMore(fetchMoreOptions);
}
subscribeToMore(options) {
// XXX: there's a bug in apollo-client typings
// it should not inherit types from ObservableQuery
return this.obsQuery.subscribeToMore(options);
}
updateQuery(mapFn) {
return this.obsQuery.updateQuery(mapFn);
}
stopPolling() {
return this.obsQuery.stopPolling();
}
startPolling(pollInterval) {
return this.obsQuery.startPolling(pollInterval);
}
setOptions(opts) {
return this.obsQuery.setOptions(opts);
}
setVariables(variables) {
return this.obsQuery.setVariables(variables);
}
}
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QueryRef<R, V & OperationVariables>\n  : never;\n\nexport class QueryRef<T, V extends OperationVariables = EmptyObject> {\n  public valueChanges: Observable<ApolloQueryResult<T>>;\n  public queryId: ObservableQuery<T, V>['queryId'];\n\n  constructor(\n    private obsQuery: ObservableQuery<T, V>,\n    ngZone: NgZone,\n    options: WatchQueryOptions<V, T>,\n  ) {\n    const wrapped = wrapWithZone(from(fixObservable(this.obsQuery)), ngZone);\n\n    this.valueChanges = options.useInitialLoading\n      ? wrapped.pipe(useInitialLoading(this.obsQuery))\n      : wrapped;\n    this.queryId = this.obsQuery.queryId;\n  }\n\n  // ObservableQuery's methods\n\n  public get options() {\n    return this.obsQuery.options;\n  }\n\n  public get variables() {\n    return this.obsQuery.variables;\n  }\n\n  public result(): Promise<ApolloQueryResult<T>> {\n    return this.obsQuery.result();\n  }\n\n  public getCurrentResult(): ApolloQueryResult<T> {\n    return this.obsQuery.getCurrentResult();\n  }\n\n  public getLastResult(): ApolloQueryResult<T> {\n    return this.obsQuery.getLastResult();\n  }\n\n  public getLastError(): ApolloError {\n    return this.obsQuery.getLastError();\n  }\n\n  public resetLastResults(): void {\n    return this.obsQuery.resetLastResults();\n  }\n\n  public refetch(variables?: V): Promise<ApolloQueryResult<T>> {\n    return this.obsQuery.refetch(variables);\n  }\n\n  public fetchMore<K = V>(\n    fetchMoreOptions: FetchMoreQueryOptions<K, T>,\n  ): Promise<ApolloQueryResult<T>> {\n    return this.obsQuery.fetchMore(fetchMoreOptions);\n  }\n\n  public subscribeToMore<MT = any, MV = EmptyObject>(\n    options: SubscribeToMoreOptions<T, MV, MT>,\n  ): () => void {\n    // XXX: there's a bug in apollo-client typings\n    // it should not inherit types from ObservableQuery\n    return this.obsQuery.subscribeToMore(options as any);\n  }\n  public updateQuery(mapFn: (previousQueryResult: T, options: UpdateQueryOptions<V>) => T): void {\n    return this.obsQuery.updateQuery(mapFn);\n  }\n\n  public stopPolling(): void {\n    return this.obsQuery.stopPolling();\n  }\n\n  public startPolling(pollInterval: number): void {\n    return this.obsQuery.startPolling(pollInterval);\n  }\n\n  public setOptions(opts: any) {\n    return this.obsQuery.setOptions(opts);\n  }\n\n  public setVariables(variables: V) {\n    return this.obsQuery.setVariables(variables);\n  }\n}\n"]}