Expo: A networking error occurred during POST request

[spsaucier]

When I try to initialize Statsig using the Expo client, I'm getting the error specified here: https://github.com/statsig-io/js-client-monorepo/blob/main/packages/client-core/src/NetworkCore.ts#L270

ERROR  [Statsig] A networking error occurred during POST request to https://featureassets.org/v1/initialize?k=client-MY_CLIENT_KEY&st=javascript-client-expo&sv=3.10.0&t=1738103586633&sid=474fe0de-873f-41b1-bf50-0d5f71814139&se=1. TypeError: Network request failed [TypeError: Network request failed]
ERROR  [Statsig] A networking error occurred during POST request to https://prodregistryv2.org/v1/rgstr?k=client-MY_CLIENT_KEY&st=javascript-client-expo&sv=3.10.0&t=1738103591179&sid=474fe0de-873f-41b1-bf50-0d5f71814139&ec=2. TypeError: Network request failed [TypeError: Network request failed]
WARN  [Statsig] Failed to flush events.
ERROR  [Statsig] A networking error occurred during POST request to https://prodregistryv2.org/v1/rgstr?k=client-MY_CLIENT_KEY&st=javascript-client-expo&sv=3.10.0&t=1738103591184&sid=474fe0de-873f-41b1-bf50-0d5f71814139&ec=1. TypeError: Network request failed [TypeError: Network request failed]
WARN  [Statsig] Failed to flush events.
ERROR  [Statsig] A networking error occurred during POST request to https://prodregistryv2.org/v1/rgstr?k=client-MY_CLIENT_KEY&st=javascript-client-expo&sv=3.10.0&t=1738103601004&sid=474fe0de-873f-41b1-bf50-0d5f71814139&ec=2. TypeError: Network request failed [TypeError: Network request failed]
WARN  [Statsig] Failed to flush events.

The Expo docs mention that some users experienced a networking error before SDK version 3.1.0, but I am experiencing it on 3.11.0 as well: https://docs.statsig.com/client/javascript-sdk/expo#network-issues
"@statsig/expo-bindings": "^3.11.0",

My provider:

import React, { PropsWithChildren, useEffect, useState } from 'react';
import { MMKV } from 'react-native-mmkv';
import { StatsigProviderExpo } from '@statsig/expo-bindings';

import { useFacilityProvider } from 'app/scan/components/Facilities/JoinFacilityProvider';

import { BREADCRUMB_TYPES } from '../config/enums';
import { getAppVersion, getEnvVar } from '../util/env';
import { logBreadcrumb, logError } from '../util/monitorClient';
import { useAuth } from './AuthProvider';

export const StatsigProvider = ({ children }: PropsWithChildren<any>) => {
  const { user } = useAuth();
  const { facility } = useFacilityProvider();
  const [storageProvider] = useState(() => {
    const mmkv = new MMKV();
    return {
      isReady: () => true,
      isReadyResolver: () => null,
      getProviderName: () => 'MMKV',
      getAllKeys: () => mmkv.getAllKeys(),
      getItem: (key: string) => mmkv.getString(key) ?? null,
      setItem: (key: string, value: string) => mmkv.set(key, value),
      removeItem: (key: string) => mmkv.delete(key),
    };
  });

  // Log errors if user or facility data is missing
  useEffect(() => {
    if (!user) {
      logError('Statsig error: No user data available', {
        source: 'StatsigProvider',
      });
    }
    if (!facility) {
      logError('Statsig error: No facility data available', {
        source: 'StatsigProvider',
        ...user,
      });
    }
  }, [user, facility]);

  useEffect(() => {
    if (user) {
      logBreadcrumb('Statsig: User updated', BREADCRUMB_TYPES.log, {
        userID: user._id,
        email: user.email,
        facilityId: facility?.facilityId,
      });
    }
  }, [user, facility]);

  return (
    <StatsigProviderExpo
      sdkKey={getEnvVar('STATSIG_KEY') || ''}
      options={{
        storageProvider,
        environment: {
          tier: getEnvVar('ENVIRONMENT'),
        },
      }}
      user={{
        userID: user?._id || '',
        email: user?.email || 'nobody@devnull.shipveho.com',
        locale: user?.market,
        appVersion: getAppVersion(),
        custom: user
          ? {
              appLanguage: user.appLanguage,
              deviceId: user.deviceId,
              deviceManufacturer: user.deviceManufacturer,
              deviceModel: user.deviceModel,
              facilities: user.facilities,
              platform: user.platform,
              platformVersion: user.platformVersion,
              name: user.name,
              userAgent: 'FMA',
            }
          : undefined,
        customIDs: facility?.facilityId
          ? {
              facilityId: facility.facilityId,
            }
          : undefined,
      }}
    >
      {children}
    </StatsigProviderExpo>
  );
};

[maykonmichel]

Hey @spsaucier, I just submitted a PR that addresses the Expo networking issue you reported. While the maintainers review and publish it, you can patch my changes locally if you'd like to use Statsig with Expo right away. Let me know if you need any guidance!