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SKILL_JS5_ARCGIS / arcgis-core-maps

AGENTS.md1 starsChanged 6 months agoMITView on GitHub

Quick-reference for creating maps and scenes. Read before deciding API or generating code. 3. Need view internals before render? - Yes → view.when() (Core) or await el.viewOnReady() then el.view (Components): the arcgisViewReadyChange detail is null, never event.detail.view.

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AGENTS.md

Agent Guide: arcgis-core-maps

Quick-reference for creating maps and scenes. Read before deciding API or generating code.

Quick Decision Tree

  1. New project / quick embed?
    • Yes → Map Components (<arcgis-map> / <arcgis-scene>).
    • No → Core API.
  2. 2D or 3D?
    • 2D → MapView (or <arcgis-map>).
    • 3D → SceneView (or <arcgis-scene>), set map.ground for terrain.
  3. Need view internals before render?
    • Yes → view.when() (Core) or await el.viewOnReady() then el.view (Components): the arcgisViewReadyChange detail is null, never event.detail.view.

Setup Checklist

  • pnpm add @arcgis/core @arcgis/map-components.
  • esriConfig.apiKey = import.meta.env.VITE_ARCGIS_API_KEY (required for basemap styles).
  • Give the container/element a non-zero height (html,body,arcgis-map { height: 100% }).
  • Read view only after ready; without an API key or a height it never gets there.

Anti-patterns (one-liner reminders)

  • ❌ Don't read el.view before arcgisViewReadyChange.
  • ❌ Don't omit the API key — basemap styles 401 to a grey canvas.
  • ❌ Don't pass camera to MapView (2D); use SceneView.
  • ❌ Don't forget the .js extension in @arcgis/core/* imports.

Files in This Skill

  • SKILL.md / SKILL.es.md — full guides
  • references/api-detail.md — Map/MapView/SceneView signatures
  • references/examples.md — 2D, 3D, and webmap examples
  • references/pitfalls.md — extended troubleshooting
  • scripts/snippet-mapview.ts, snippet-sceneview.ts, snippet-map-component.ts

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