Repository-level failure reducer: shrink a failing repository while preserving the exact failure
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Updated
Sep 4, 2026 - Python
Repository-level failure reducer: shrink a failing repository while preserving the exact failure
Claude Code skill that turns "it crashes sometimes" into the minimal script that crashes it every time — hypothesis hunt, tighten the trigger, delta-debug it down, then hand over the failing regression test. 🔬
Prune everything except the bug. BugBonsai turns a failing JavaScript or TypeScript project into a small, shareable reproduction while continuously verifying that the original failure still exists.
Replay-verified minimal JSON reproductions and deterministic TypeScript/OpenAPI drift checks. Local-first CLI and MCP server.
Test Automation plugin Cypress.mount issue minimal reproduction
Minimal reproduction for JetBrains IDEs issue about unit test types and Cypress
Minimal reproduction for the .gitignore issue in pyloid.
Minimal reproduction of Angular 18.1 bug related to ngtypecheck.d.ts files when multiple library entrypoints exist
Turn a failing JavaScript or TypeScript repository into a smaller, verified reproduction.
Standalone LiteRT-LM Android minimal reproduction project with physical validation and engineering evidence for runtime investigation. Prepared for Google LiteRT engineering review.
Minimal reproduction: astro i18n fallback route corrupted when a path segment starts with the locale code
Cloudflare Pages early hints: base href issue minimal reproduction
A reproduction of tsdoc-markdown treating private identifiers as public identifiers. Update: resolved!
A minimal reproduction of being unable to import the `consola` package under the node16 module resolution mode.
Minimal reproduction for Glide.js modular build types
Executable reproduction for pydoctor Sphinx api-folder rename failure
A requestAnimationFrame-paced render loop that no framework's guard catches: pure waste on Vue 3, Svelte 5 and legacy React, a permanent Suspense deadlock on concurrent React. Live demos, four renderers, measured.
Shrink a failing repository to the least that still fails the same way. Language-agnostic delta debugging, zero dependencies.
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