feat: req in loadTypes

.changeset/lazy-swans-train.md

@@ -0,0 +1,5 @@
+---
+"express-middleware-shacl": minor
+---
+
+Pass `Request` object to `loadTypes`

index.ts

@@ -19,7 +19,7 @@ import { findNodes } from 'clownface-shacl-path'
 RdfResource.factory.addMixin(...ShapeBundle)
 
 interface ShaclMiddlewareOptions {
-  loadTypes?(resources: NamedNode[]): Promise<DatasetCore>
+  loadTypes?(resources: NamedNode[], req: Request): Promise<DatasetCore>
   loadShapes(req: Request): Promise<DatasetCore>
   errorContext?: string
 }
@@ -105,7 +105,7 @@ export const shaclMiddleware = ({ loadShapes, loadTypes, errorContext = 'https:/
       .filter(isNamedNode)
 
     if (loadTypes && linkedInstances.length) {
-      const typeQuads = await loadTypes(linkedInstances)
+      const typeQuads = await loadTypes(linkedInstances, req)
       for (const quad of typeQuads) {
         req.shacl.dataGraph.dataset.add(quad)
       }

readme.md

@@ -22,7 +22,7 @@ const app = express()
 
 app.use(shaclMiddleware({
   // Load the shapes to populate the Shapes Graph.
-  async loadShapes(req): Promise<DatasetCore> {
+  async loadShapes(req: express.Request): Promise<DatasetCore> {
       // Should at least use the payload resource types but might also select more shapes,
       // such as any shape annotated on the existing resource in database
       const types = req.shacl.dataGraph.out(rdf.type).terms
@@ -33,7 +33,7 @@ app.use(shaclMiddleware({
        */
   },
   // (Optional) Load rdf:type quads of the given resources
-  loadTypes(resources: NamedNode[]): Promise<DatasetCore> {
+  loadTypes(resources: NamedNode[], req: express.Request): Promise<DatasetCore> {
       // For example, could be implemented as a SPARQL query
       /*
        CONSTRUCT { ?resource a ?type }