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yfiles-init

Development
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Initializes new yFiles for HTML applications with GraphComponent, license registration, and basic setup. Use when creating demos, starting projects, scaffolding applications, or when user mentions "create app", "new demo", "initialize", or "setup yfiles".

QUICK START

How to use this skill

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  2. Copy the prompt below and paste it into your agent.
  3. Review the proposed files and risks before you approve installation.
Prompt to paste
I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/development/yfiles-init/SKILL.md

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Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

Initialize yFiles Application

Creates a complete yFiles application following package conventions.

Quick Start

/yfiles-init [demo-name]

Creates in current directory if no name specified.

Setup Checklist

Copy this checklist and track progress:

Setup Progress:
- [ ] Verify GraphComponent API with yFiles MCP
- [ ] Create HTML entry point
- [ ] Create main TypeScript/JavaScript file
- [ ] Adjust import paths for license
- [ ] Configure ESLint with yFiles plugin (recommended)
- [ ] Test in browser

Implementation

Step 1: Verify APIs

Use yFiles MCP server to confirm current API:

yfiles:yfiles_get_symbol_details(name="GraphComponent")
yfiles:yfiles_list_members(name="GraphComponent", includeInherited=true)

Step 2: Create files

See examples.md for complete file templates.

Essential pattern:

import { GraphComponent, GraphEditorInputMode, License } from '@yfiles/yfiles'
import licenseData from '../../lib/license.json'

License.value = licenseData  // MUST come first

const graphComponent = new GraphComponent('#graphComponent')
graphComponent.inputMode = new GraphEditorInputMode()

Step 3: Adjust import paths

License path depends on demo location:

  • demos-ts/category/demo/: Use ../../../lib/license.json
  • Adjust depth as needed

Step 4: Configure ESLint (Recommended)

The official @yfiles/eslint-plugin helps catch common mistakes and ensures yFiles 3.0 best practices:

npm i -D eslint typescript typescript-eslint @yfiles/eslint-plugin

See reference.md for complete ESLint configuration.

Step 5: Test

npm start
# Navigate to http://localhost:4242/demos-ts/your-demo/

Key Rules

  • License first: License.value = licenseData before any yFiles API
  • Use CSS selectors: new GraphComponent('#id') or new GraphComponent(element)
  • Access graph via: graphComponent.graph
  • Set defaults before creating: Configure graph.nodeDefaults.style before createNode()

Reference Files

MCP Tools for Reference

  • yfiles:yfiles_get_symbol_details - Get API details
  • yfiles:yfiles_search_symbols - Find classes/interfaces
  • yfiles:yfiles_search_documentation - Find tutorials