build-fix

A guide for finding and fixing errors that stop software from compiling or building. A build turns source code into a form that can run or be published.

In plain words
What is it for?
Use it when a package is missing, an import is wrong, types do not match, JSX is misconfigured, dependencies conflict, or a build runs out of memory. It covers JavaScript, TypeScript, and Python examples.
Why use it?
It connects common error messages with likely causes and fixes, so you do not have to investigate each build failure from scratch.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/bugrabilge/bilge-development-kit/build-fix
Any agent
npx skills add bugrabilge/bilge-development-kit --skill build-fix
Clone the repo
git clone --depth 1 https://github.com/bugrabilge/bilge-development-kit

Made for: Claude Code, Codex.

Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 692 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00043 $0.00692
Opus 5 $0.00022 $0.00346
Sonnet 5 $0.00009 $0.00138
Haiku 4.5 $0.00004 $0.00069

Measured 3d ago against content hash 0a314b0b3640, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

build-fix scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/build-fix/SKILL.md · 74 lines

How it starts

The opening of the file, as written. The whole thing — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Build Error Resolution Knowledge Base

Domain knowledge for diagnosing and fixing build errors across frameworks and languages.


Error Pattern Database

JavaScript / TypeScript

Error Pattern Root Cause Fix
Cannot find module 'X' Package not installed npm install X / pnpm add X
Module not found: Can't resolve './X' Wrong import path Check file exists, fix relative path
has no exported member 'X' Wrong named import Check actual exports, use correct name
Type 'X' is not assignable to type 'Y' Type mismatch Add type assertion, narrow type, or fix data
Cannot use JSX unless '--jsx' flag is provided tsconfig missing jsx Add "jsx": "react-jsx" to tsconfig
Unexpected token '<' JSX in .js file Rename to .jsx/.tsx or configure babel
ERESOLVE unable to resolve dependency tree Peer dep conflict Use --legacy-peer-deps or align versions
JavaScript heap out of memory Bundle too large Increase NODE_OPTIONS=--max-old-space-size=4096

Python

Error Pattern Root Cause Fix
ModuleNotFoundError: No module named 'X' Package not installed pip install X
ImportError: cannot import name 'X' Wrong import or circular Check actual exports, fix circular deps
SyntaxError: invalid syntax Python version or typo Check Python version, fix syntax
IndentationError Mixed tabs/spaces Normalize indentation
TypeError: X() got unexpected keyword API change Check library version, update call

Next.js Specific

Error Pattern Root Cause Fix
'use client' must be added Server/client boundary Add 'use client' directive
Dynamic server usage Static page using dynamic API Add export const dynamic = 'force-dynamic'
Hydration mismatch Server/client HTML differs Fix conditional rendering, use suppressHydrationWarning

Read the full file on GitHub · 74 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 74 lines · 43 tokens per session scan A 0a314b0b3640

Subscribe to this mod's changes

build-fix is a skill published in the GitHub repository bugrabilge/bilge-development-kit (10 stars, last pushed 4mo ago), licensed MIT. It adds 43 tokens to every session and 692 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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