feat(core-eslint): manifest AST parser for per-use-case attributes

packages/core-eslint/rules/_manifest-ast.test.js

@@ -0,0 +1,53 @@
+import { describe, it, expect } from "vitest";
+import path from "node:path";
+import os from "node:os";
+import fs from "node:fs";
+import { parseManifestUseCases } from "./_manifest-ast.js";
+
+function writeManifest(content) {
+  const dir = fs.mkdtempSync(path.join(os.tmpdir(), "manifest-ast-"));
+  const fp = path.join(dir, "feature.manifest.ts");
+  fs.writeFileSync(fp, content);
+  return fp;
+}
+
+describe("parseManifestUseCases", () => {
+  it("returns an empty object for a manifest with no useCases", () => {
+    const fp = writeManifest(`export const xManifest = defineFeature({
+  name: "x",
+  requiredCores: [],
+  useCases: {},
+  realtimeChannels: [],
+  jobs: [],
+} as const);`);
+    expect(parseManifestUseCases(fp)).toEqual({});
+  });
+
+  it("extracts per-use-case publishes/audits/consumes arrays", () => {
+    const fp = writeManifest(`export const authManifest = defineFeature({
+  name: "auth",
+  requiredCores: [],
+  useCases: {
+    signIn: { mutates: false, audits: [], publishes: [], consumes: [] },
+    signUp: { mutates: true, audits: ["user.created"], publishes: ["auth.signed-up"], consumes: [] },
+    signOut: { mutates: true, audits: ["session.ended"], publishes: [], consumes: [] },
+  },
+  realtimeChannels: [],
+  jobs: [],
+} as const);`);
+    expect(parseManifestUseCases(fp)).toEqual({
+      signIn: { mutates: false, audits: [], publishes: [], consumes: [] },
+      signUp: { mutates: true, audits: ["user.created"], publishes: ["auth.signed-up"], consumes: [] },
+      signOut: { mutates: true, audits: ["session.ended"], publishes: [], consumes: [] },
+    });
+  });
+
+  it("returns null when file does not exist", () => {
+    expect(parseManifestUseCases("/nonexistent/manifest.ts")).toBeNull();
+  });
+
+  it("returns null when the file has no defineFeature call", () => {
+    const fp = writeManifest(`export const x = 1;`);
+    expect(parseManifestUseCases(fp)).toBeNull();
+  });
+});