Add accessor method to retrieve array filter value from EntityTypeFilter

Co-authored-by: Tim Hansen <timbonicus@gmail.com>
Co-authored-by: Chase Rutherford-Jenkins <chaseajen@users.noreply.github.com>
Co-authored-by: Himanshu Mishra <himanshum@spotify.com>
Co-authored-by: Joe Porpeglia <josephp@spotify.com>
Signed-off-by: Mike Lewis <mtlewis@users.noreply.github.com>

plugins/catalog-react/src/filters.ts

@@ -32,10 +32,14 @@ export class EntityKindFilter implements EntityFilter {
 }
 
 export class EntityTypeFilter implements EntityFilter {
-  constructor(readonly value: string) {}
+  constructor(readonly value: string | string[]) {}
+
+  getTypes() {
+    return Array.isArray(this.value) ? this.value : [this.value];
+  }
 
   getCatalogFilters(): Record<string, string | string[]> {
-    return { 'spec.type': this.value };
+    return { 'spec.type': this.getTypes() };
   }
 }