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gamma-local-dev-loop

tessl install github:jeremylongshore/claude-code-plugins-plus-skills --skill gamma-local-dev-loop

github.com/jeremylongshore/claude-code-plugins-plus-skills

Set up efficient local development workflow for Gamma. Use when configuring hot reload, mock responses, or optimizing your Gamma development experience. Trigger with phrases like "gamma local dev", "gamma development setup", "gamma hot reload", "gamma mock", "gamma dev workflow".

Review Score

88%

Validation Score

11/16

Implementation Score

88%

Activation Score

90%

Gamma Local Dev Loop

Overview

Configure an efficient local development workflow with hot reload and mock responses for Gamma presentation development.

Prerequisites

  • Completed gamma-hello-world setup
  • Node.js 18+ with nodemon or tsx
  • TypeScript project (recommended)

Instructions

Step 1: Install Dev Dependencies

npm install -D nodemon tsx dotenv @types/node

Step 2: Configure Development Script

Add to package.json:

{
  "scripts": {
    "dev": "tsx watch src/index.ts",
    "dev:mock": "GAMMA_MOCK=true tsx watch src/index.ts"
  }
}

Step 3: Create Mock Client

// src/gamma-client.ts
import { GammaClient } from '@gamma/sdk';

const isMock = process.env.GAMMA_MOCK === 'true';

export const gamma = isMock
  ? createMockClient()
  : new GammaClient({ apiKey: process.env.GAMMA_API_KEY });

function createMockClient() {
  return {
    presentations: {
      create: async (opts) => ({
        id: 'mock-123',
        url: 'https://gamma.app/mock/preview',
        title: opts.title,
      }),
    },
  };
}

Step 4: Set Up Environment Files

# .env.development
GAMMA_API_KEY=your-dev-key
GAMMA_MOCK=false

# .env.test
GAMMA_MOCK=true

Output

  • Hot reload development server
  • Mock client for offline development
  • Environment-based configuration
  • Fast iteration cycle

Error Handling

ErrorCauseSolution
Watch ErrorFile permissionsCheck nodemon config
Mock MismatchMock out of syncUpdate mock responses
Env Not Loadeddotenv not configuredAdd import 'dotenv/config'

Examples

Watch Mode Development

npm run dev
# Changes to src/*.ts trigger automatic restart

Offline Development with Mocks

npm run dev:mock
# Uses mock responses, no API calls

Resources

  • tsx Documentation
  • Gamma SDK Mock Guide

Next Steps

Proceed to gamma-sdk-patterns for advanced SDK usage patterns.