feat: filter artist discography + counts to core releases unless showAllTypes

web/src/lib/release-filter.test.ts

@@ -0,0 +1,16 @@
+import { describe, it, expect } from "vitest";
+import { isCoreRelease } from "./release-filter";
+
+describe("isCoreRelease", () => {
+  it("accepts Album/Single/EP with no secondary types", () => {
+    expect(isCoreRelease({ primaryType: "Album", secondaryTypes: [] })).toBe(true);
+    expect(isCoreRelease({ primaryType: "Single", secondaryTypes: [] })).toBe(true);
+    expect(isCoreRelease({ primaryType: "EP", secondaryTypes: [] })).toBe(true);
+  });
+  it("rejects secondary types and non-core primaries and null", () => {
+    expect(isCoreRelease({ primaryType: "Album", secondaryTypes: ["Live"] })).toBe(false);
+    expect(isCoreRelease({ primaryType: "Album", secondaryTypes: ["Compilation"] })).toBe(false);
+    expect(isCoreRelease({ primaryType: "Broadcast", secondaryTypes: [] })).toBe(false);
+    expect(isCoreRelease({ primaryType: null, secondaryTypes: [] })).toBe(false);
+  });
+});

web/src/lib/release-filter.ts

@@ -0,0 +1,6 @@
+const CORE_PRIMARY = new Set(["Album", "Single", "EP"]);
+
+/** A "core" studio release: Album/Single/EP with no secondary types (live, compilation, etc.). */
+export function isCoreRelease(r: { primaryType: string | null; secondaryTypes: string[] }): boolean {
+  return CORE_PRIMARY.has(r.primaryType ?? "") && r.secondaryTypes.length === 0;
+}