Version Conflict Audit Protocol
A diagnostic matrix and testing methodology for resolving runtime errors like Error #525 and invariant issues.
PRID: 1604
VERIFIED
2 min read
🧩 Version Conflict & Runtime Error Audit Protocol
1. The Diagnostic Matrix
| Error Symptom | Probable Cause | Test Strategy |
|---|---|---|
| Error #525 | Path Mismatch in ImportMap | Check if react/ and react in importmap point to same URL. |
| Invariant Error | Missing Export in ESM | Check if version pinned in Importmap supports the required export. |
| TypeError: process undefined | Missing Environment Shim | Check typeof process in console. |
2. Step-by-Step Testing Methodology
Phase E: JSX Runtime Consistency Check
Vite-compiled code often uses react/jsx-runtime. If this isn't in your importmap, it may resolve to a different version via ESM.sh's auto-resolution.
Test Action:
- Open Sources panel.
- Search for
jsx-runtime. - Check its import URL. It must exactly match the
reactURL (including version).
Phase F: Process Shim Audit
Many packages (like @tanstack/react-query) check process.env.NODE_ENV to enable dev-tools. In a pure browser environment, this throws if not shimmed.
Test Action:
- Enter
window.process.env.NODE_ENVin the console. - If it returns
undefinedor throws an error, the shim inindex.htmlis not effective.
3. Configuration Checklist (New)
- JSX Runtime Mapping: Added
react/jsx-runtimeandreact/jsx-dev-runtimeto ImportMap. - Dependency Isolation: Used
?external=reacton all TanStack and Lucide imports to force them to use the host React instance. - Process Shim: Injected
window.processintoindex.html. - HashHistory Default: Forced
HashHistoryforblob:origins to avoid Origin-mismatch onreplaceState.