pattern-state

Teaches and applies the State behavioral design pattern — allowing an object to alter its behavior when its internal state changes, appearing as if the object…

Skill by gentleman-programming

IndexedApache-2.0

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About

Teaches and applies the State behavioral design pattern — allowing an object to alter its behavior when its internal state changes, appearing as if the object changed its class. Trigger: When implementing finite state machines, workflow states, or mode-based behavior.

Use cases: design, productivity

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What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

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~/.claude/skills/pattern-state

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What's inside

Skill name: pattern-state
Description: Teaches and applies the State behavioral design pattern — allowing an object to alter its behavior when its internal state changes, appearing as if the object changed its class. Trigger: When implementing finite state machines, workflow states, or mode-based behavior.
License: Apache-2.0
Allowed tools: Read,, Edit,, Write,, Glob,, Grep,, Bash,, WebFetch,, WebSearch,, Task
Metadata: author: gentleman-programming · version: 1.0
Instructions: 44 lines in SKILL.md · view on GitHub

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Files (1)

SKILL.md

SKILL.md (first lines)

# Skill: Implement State Pattern

## Purpose

Allows an object to alter its behavior when its internal state changes. It appears as if the object changed its class.

## Procedural Instructions

1. **Map Finite States:** Identify the possible states and transitions.
2. **Declare State Interface:** Define methods for all state-dependent actions.
3. **Create Concrete State Classes:** Extract logic from the original class into these new classes, one per state.
4. **Define Context:** The original class (Context) stores a reference to a state object and delegates work to it.
5. **Manage Transitions:** Either the Context or the states themselves can trigger a state change.

## TypeScript Example

```typescript
interface State {
  handle(context: Context): void;
}

class Context {
  constructor(private state: State) {}
  transitionTo(state: State) {
    this.state = state;
  }
  request() {
    this.state.handle(this);
  }
}

class ConcreteStateA implements State {
  handle(context: Context) {
    context.transitionTo(new ConcreteStateB());
  }
}
```

## Payoff

- **SRP:** Organizes state-specific code into separate classes.
- **Simplified Logic:** Eliminates massive, complex conditionals based on state flags.

From johnnystefan/test-saas-business, Apache-2.0.

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Stars: 0
Forks: 0
Open issues: 0
Last commit (this folder): Apr 1, 2026 (7 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Version: 1.0
License: Apache-2.0
Repository: github.com/johnnystefan/test-saas-business
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: GitHub github-graphql

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pattern-state skill. Agent Mart. https://agentmart.dev/skills/johnnystefan-pattern-state (last updated 2026-10-24)