cosmiconfig-setup

Set up cosmiconfig for hierarchical configuration loading from multiple sources and formats.

509 stars

Best use case

cosmiconfig-setup is best used when you need a repeatable AI agent workflow instead of a one-off prompt.

Set up cosmiconfig for hierarchical configuration loading from multiple sources and formats.

Teams using cosmiconfig-setup should expect a more consistent output, faster repeated execution, less prompt rewriting.

When to use this skill

  • You want a reusable workflow that can be run more than once with consistent structure.

When not to use this skill

  • You only need a quick one-off answer and do not need a reusable workflow.
  • You cannot install or maintain the underlying files, dependencies, or repository context.

Installation

Claude Code / Cursor / Codex

$curl -o ~/.claude/skills/cosmiconfig-setup/SKILL.md --create-dirs "https://raw.githubusercontent.com/a5c-ai/babysitter/main/library/specializations/cli-mcp-development/skills/cosmiconfig-setup/SKILL.md"

Manual Installation

  1. Download SKILL.md from GitHub
  2. Place it in .claude/skills/cosmiconfig-setup/SKILL.md inside your project
  3. Restart your AI agent — it will auto-discover the skill

How cosmiconfig-setup Compares

Feature / Agentcosmiconfig-setupStandard Approach
Platform SupportNot specifiedLimited / Varies
Context Awareness High Baseline
Installation ComplexityUnknownN/A

Frequently Asked Questions

What does this skill do?

Set up cosmiconfig for hierarchical configuration loading from multiple sources and formats.

Where can I find the source code?

You can find the source code on GitHub using the link provided at the top of the page.

SKILL.md Source

# Cosmiconfig Setup

Set up cosmiconfig for hierarchical config loading.

## Capabilities

- Configure cosmiconfig search paths
- Set up format loaders (JSON, YAML, TOML)
- Create TypeScript config support
- Implement config caching
- Handle config validation

## Generated Patterns

```typescript
import { cosmiconfig, cosmiconfigSync } from 'cosmiconfig';
import { TypeScriptLoader } from 'cosmiconfig-typescript-loader';

const moduleName = 'myapp';

const explorer = cosmiconfig(moduleName, {
  searchPlaces: [
    'package.json',
    `.${moduleName}rc`,
    `.${moduleName}rc.json`,
    `.${moduleName}rc.yaml`,
    `.${moduleName}rc.yml`,
    `.${moduleName}rc.js`,
    `.${moduleName}rc.ts`,
    `.${moduleName}rc.cjs`,
    `${moduleName}.config.js`,
    `${moduleName}.config.ts`,
    `${moduleName}.config.cjs`,
  ],
  loaders: {
    '.ts': TypeScriptLoader(),
  },
});

export async function loadConfig(searchFrom?: string) {
  const result = await explorer.search(searchFrom);
  if (!result || result.isEmpty) {
    return { config: getDefaultConfig(), filepath: null };
  }
  return { config: { ...getDefaultConfig(), ...result.config }, filepath: result.filepath };
}
```

## Target Processes

- configuration-management-system
- cli-application-bootstrap
- mcp-server-bootstrap

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