portaljs-add-map
Render a GeoJSON dataset on an interactive Leaflet map in the Views section of a dataset's showcase. Installs react-leaflet and a Map component, then renders the map for the chosen dataset. Use when a dataset's data is geographic and a map view is needed alongside the showcase's default metadata and download.
npx skills add datopian/portaljs --skill portaljs-add-map --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# PortalJS — Add Map ## Overview Add an interactive Leaflet map as a view on a dataset's **showcase** in a `portaljs-catalog` portal. The skill installs `react-leaflet`/`leaflet` (added directly — never `@portaljs/components`), writes a reusable `Map` component split across `MapView.tsx` (the Leaflet code) and `Map.tsx` (a `dynamic(..., { ssr: false })` wrapper, since Leaflet touches `window` at module load), and renders `<Map />` into the **Views** section of the showcase route `pages/[owner]/[slug].tsx` for one chosen GeoJSON dataset. The dataset should already carry `format: "geojson"` in `datasets.json`; if it doesn't exist yet, the skill can copy the file and register it first. ## Prerequisites - A scaffolded PortalJS portal (see `portaljs-new-portal`). - The target dataset registered in `datasets.json` with `format: "geojson"` (see `portaljs-add-dataset`), or a GeoJSON source file/URL to register. - Node 18+ and npm available in the portal directory. ## Instructions The canonical, full step-by-step workflow is [`.claude/commands/portaljs-add-map.md`](https://github.com/datopian/portaljs/blob/main/.claude/commands/portaljs-add-map.md) — the single source of truth. Read and fol
- Overview
- Prerequisites
- Instructions
- Output
- Error Handling
- Examples
- Example 1 — Map an already-registered dataset
- Example 2 — Register a local GeoJSON file and map it
- Example 3 — Register a remote GeoJSON URL and map it
- Resources
What does the portaljs-add-map skill do?
Render a GeoJSON dataset on an interactive Leaflet map in the Views section of a dataset's showcase. Installs react-leaflet and a Map component, then renders the map for the chosen dataset. Use when a dataset's data is geographic and a map view is needed alongside the showcase's default metadata and download.
How do I install it?
Run `npx skills add datopian/portaljs --skill portaljs-add-map --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From datopian/portaljs, a repository with 2,337 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.