Gabriel

[Gab-codes]

Summary

This PR introduces a complete testing, CI/CD, and reliability hardening layer for the vfetch HTTP client, transforming it from a functional wrapper around fetch into a production-grade, concurrency-safe HTTP client with Axios-like guarantees.

What was added

1. Vitest Test Suite (Full Coverage Structure)

• Introduced modular test architecture:
• basic.test.ts
• query.test.ts
• headers.test.ts
• error.test.ts
• refresh.test.ts
• concurrent.test.ts
• json.test.ts
• integration/full-flow.test.ts
• Added deterministic test utilities for mocking fetch

Coverage Enforcement (Vitest + V8)

• Enabled coverage reporting with V8
• Established strict thresholds:
  ~ 85–90% statement coverage
  ~ 80%+ branch coverage
• Identified and strengthened weak execution paths in:
  ~ retry logic
  ~ interceptor flow
  ~ error normalization
  ~ concurrency handling