@graphql-tools/links/esm/AwaitVariablesLink.js

A set of utils for faster development of GraphQL tools

import * as apolloImport from '@apollo/client';
import { mapMaybePromise } from '@graphql-tools/utils';
const apollo = apolloImport?.default ?? apolloImport;
function getFinalPromise(object) {
    return mapMaybePromise(object, resolvedObject => {
        if (resolvedObject == null) {
            return resolvedObject;
        }
        if (Array.isArray(resolvedObject)) {
            return Promise.all(resolvedObject.map(o => getFinalPromise(o)));
        }
        else if (typeof resolvedObject === 'object') {
            const keys = Object.keys(resolvedObject);
            return Promise.all(keys.map(key => getFinalPromise(resolvedObject[key]))).then(awaitedValues => {
                for (let i = 0; i < keys.length; i++) {
                    resolvedObject[keys[i]] = awaitedValues[i];
                }
                return resolvedObject;
            });
        }
        return resolvedObject;
    });
}
export class AwaitVariablesLink extends apollo.ApolloLink {
    request(operation, forward) {
        return new apollo.Observable(observer => {
            let subscription;
            getFinalPromise(operation.variables)
                .then(resolvedVariables => {
                operation.variables = resolvedVariables;
                subscription = forward(operation).subscribe({
                    next: observer.next.bind(observer),
                    error: observer.error.bind(observer),
                    complete: observer.complete.bind(observer),
                });
            })
                .catch(observer.error.bind(observer));
            return () => {
                if (subscription != null) {
                    subscription.unsubscribe();
                }
            };
        });
    }
}