Build Until Green
Run the production build, fix compile and bundling errors, and loop until the build succeeds.
Kickoff prompt
Start the "Build Until Green" loop.
Goal: production build succeeds
Max iterations: 10
Between iterations run: npm run build
Exit when: npm run build exits 0
Step 1: Run the build. If it fails, fix the first error, then repeat until green.
Self-pace this loop. After each iteration, run the check command, read the output, and only continue if the exit condition is not met. Stop when the exit condition passes or max iterations is reached. Give a short status update each pass.Basic information
Category
Testing
Goal
production build succeeds
Max iterations
10
Check command
npm run build
Exit when
npm run build exits 0
Supported agents
Cursor, Claude Code
Steps
- 1
Run build
Run the project build command and capture all errors.
npm run build - 2
Fix build errors
Fix compile, type, and bundling errors one at a time. Prefer minimal diffs.
- 3
Re-run build
Run the build again and confirm errors are resolved.
npm run build
More Testing loops
Coverage Until Threshold
Add focused tests until coverage meets your threshold (e.g. 80%), without changing production behavior unnecessarily.
Pre-Commit Guard
Hook that runs tests before git commit commands to block commits when the suite is red.
Post-Edit Test Guard
Hook-based loop that runs related tests after file edits to catch regressions early.
Format Until Clean
Run the formatter, fix any remaining style issues, and loop until the codebase formats cleanly with no diffs.
Flaky Test Triage
Run failing tests repeatedly, classify each failure as flaky or real, and fix only confirmed regressions.
Autoloop TDD
Test-first loop: write a failing test, implement the minimum code to pass, refactor, and repeat.