build-fix

name	build-fix
description	Fix build and TypeScript errors with minimal changes

Build Fix Skill

Fix build and compilation errors quickly with minimal code changes. Get the build green without refactoring.

When to Use

This skill activates when:

• User says "fix the build", "build is broken"
• TypeScript compilation fails
• the build command or type checker reports errors
• User requests "minimal fixes" for errors

What It Does

GPT-5.4 Guidance Alignment

• Default to concise, evidence-dense progress and completion reporting unless the user or risk level requires more detail.
• Treat newer user task updates as local overrides for the active workflow branch while preserving earlier non-conflicting constraints.
• If correctness depends on additional inspection, retrieval, execution, or verification, keep using the relevant tools until the build-fix workflow is grounded.
• Continue through clear, low-risk, reversible next steps automatically; ask only when the next step is materially branching, destructive, or preference-dependent.

Delegates to the build-fixer agent (STANDARD tier) to:

1. Collect Errors

   • Run the project's type check command (e.g., tsc --noEmit, mypy, cargo check, go vet)
   • Or run the project's build command to get build failures
   • Categorize errors by type and severity

2. Fix Strategically

   • Add type annotations where missing
   • Add null checks where needed
   • Fix import/export statements
   • Resolve module resolution issues
   • Fix linter errors blocking build

3. Minimal Diff Strategy

   • NO refactoring of unrelated code
   • NO architectural changes
   • NO performance optimizations
   • ONLY what's needed to make build pass

4. Verify

   • Run the project's type check command after each fix
   • Ensure no new errors introduced
   • Stop when build passes

Command Guidance

• Prefer omb sparkshell for noisy build/typecheck runs, repository search/listing, and bounded read-only inspection when summary output is enough.
• Use raw shell when exact stdout/stderr, shell composition, dependency installation, or low-level debugging fidelity is required.
• If omb sparkshell returns incomplete, ambiguous, or summary unavailable output, retry with a more precise command or the raw shell immediately.

Agent Delegation

delegate(
  role="build-fixer",
  tier="STANDARD",
  prompt="BUILD FIX TASK

Fix all build and TypeScript errors with minimal changes.

Requirements:
- Run tsc/build to collect errors
- Fix errors one at a time
- Verify each fix doesn't introduce new errors
- NO refactoring, NO architectural changes
- Stop when build passes

Output: Build error resolution report with:
- List of errors fixed
- Lines changed per fix
- Final build status"
)

Stop Conditions

The build-fixer agent stops when:

• Type check command exits with code 0
• Build command completes successfully
• No new errors introduced

Output Format

BUILD FIX REPORT
================

Errors Fixed: 12
Files Modified: 8
Lines Changed: 47

Fixes Applied:
1. src/utils/validation.ts:15 - Added return type annotation
2. src/components/Header.tsx:42 - Added null check for props.user
3. src/api/client.ts:89 - Fixed import path for axios
...

Final Build Status: ✓ PASSING
Verification: [type check command] (exit code 0)

Best Practices

• One fix at a time - Easier to verify and debug
• Minimal changes - Don't refactor while fixing
• Document why - Comment non-obvious fixes
• Test after - Ensure tests still pass

Scenario Examples

Good: The user says continue after the workflow already has a clear next step. Continue the current branch of work instead of restarting or re-asking the same question.

Good: The user changes only the output shape or downstream delivery step (for example make a PR). Preserve earlier non-conflicting workflow constraints and apply the update locally.

Bad: The user says continue, and the workflow restarts discovery or stops before the missing verification/evidence is gathered.

Use with Other Skills

Combine with other skills for comprehensive fixing:

With Ultrawork:

/ultrawork fix all build errors

Spawns multiple build-fixer agents in parallel for different files.

With Ralph:

/ralph fix the build

Keeps trying until build passes, even if it takes multiple iterations.

With Team:

/team "debug build failures and fix type errors"

Uses: explore → build-fixer → verifier workflow.