PortalJS — Add DCAT

Overview

Turn an existing PortalJS (portaljs-catalog) portal into a harvestable data catalog. PortalJS is Frictionless-native — a dataset is a Data Package (see portaljs-define-schema) — and DCAT is the serialization + harvest layer on top (lib/metadata/dcat.ts + lib/metadata/dcat-profiles.ts). This skill selects one or more DCAT application profiles, maps every dataset's metadata to them, and writes static feed files at build time — JSON-LD, Turtle, and RDF/XML — so external catalogs (data.europa.eu, data.gov, national portals) can harvest the datasets automatically, on any static host, with no runtime.

Prerequisites