iOS: victory-native module exports warning during bundling

[alex-pythonista]

Description

During iOS bundling, a warning is displayed about the victory-native module's exports configuration. While this is currently just a warning (not blocking), it indicates a potential compatibility issue that could cause problems in future Metro/Expo versions.

Warning Message

WARN  Attempted to import the module "/Users/alexpy/Desktop/projects/helm-all/helm/node_modules/victory-native" which is listed in the "exports" of "/Users/alexpy/Desktop/projects/helm-all/helm/node_modules/victory-native", however no match was resolved for this request (platform = ios). Falling back to file-based resolution. Consider updating the call site or asking the package maintainer(s) to expose this API.

Root Cause

This warning occurs because victory-native's package.json exports field doesn't properly define an entry point for the ios platform condition. Metro bundler (used by Expo/React Native) is falling back to file-based resolution, which works but is not ideal.

The package is used in components/dynamic-chart.tsx for chart visualization.

Current Usage

• Package: victory-native ^41.16.1
• Location: components/dynamic-chart.tsx

Potential Solutions

Option 1: Wait for upstream fix (Recommended)

This is a known issue with victory-native's exports configuration. Monitor the victory-native repository for updates:

• https://github.com/FormidableLabs/victory-native-xl

Option 2: Use metro.config.js workaround

Add an unstable_enablePackageExports configuration to suppress or handle the warning:

// metro.config.js
const { getDefaultConfig } = require('expo/metro-config');

const config = getDefaultConfig(__dirname);

config.resolver.unstable_enablePackageExports = false;

module.exports = config;

Note: This disables package exports resolution entirely, which may have other side effects.

Option 3: Alternative charting library

If the warning becomes a blocking issue, consider alternative React Native charting libraries:

• react-native-chart-kit
• react-native-gifted-charts
• @shopify/react-native-skia based charts (already in dependencies)

Impact

• Severity: Low (warning only, app functions correctly)
• Current Behavior: App works normally, Metro falls back to file-based resolution
• Future Risk: May become a breaking change in future Metro versions

Environment

• victory-native: ^41.16.1
• expo: ^53.0.6
• react-native: 0.79.2
• Metro bundler (via Expo)

Related

This may be related to Metro's ongoing work on package exports support:

• Feature: support new package.json exports field facebook/metro#670