@elliotjreed/vitest-minimal-reporter

A minimal Vitest reporter optimised for LLM token efficiency. Shows only failing tests and a concise summary, reducing noise in AI coding assistant contexts.

Installation

npm install --save-dev @elliotjreed/vitest-minimal-reporter

or with Bun:

bun add --dev @elliotjreed/vitest-minimal-reporter

Usage

Add the reporter to your Vitest configuration:

// vitest.config.ts
import { defineConfig } from "vitest/config";
import MinimalReporter from "@elliotjreed/vitest-minimal-reporter";

export default defineConfig({
  test: {
    reporters: [new MinimalReporter()],
  },
});

Output format

Only failing tests are shown, each with the relative file path, test name, and error message:

FAIL src/validation.test.ts > should validate email
Expected true but received false

FAIL src/auth.test.ts > Authentication > Login > should reject invalid password
Password incorrect


Test Files 1 failed | 2 passed (3)
Tests 2 failed | 8 passed (10)
Duration 1.23s

When all tests pass, only the summary is output:

Test Files 3 passed (3)
Tests 10 passed (10)
Duration 0.98s

Development

Setup

bun install

Testing

bun run test

Building

bun run build

Type checking

bun run typecheck

Publishing

1. Build the package:

   bun run build

2. Update the version in package.json following semantic versioning.

3. Publish to npm:

   npm publish --access public

4. Commit and tag the release:

   git add package.json
   git commit -m "Release v1.0.0"
   git tag v1.0.0
   git push && git push --tags

Licence

MIT - See LICENSE