feat(cli): migrate away the dead config keys

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-20 11:45:40 +05:30
parent fb24cc7ec3
commit 7a3e55b150
2 changed files with 140 additions and 0 deletions
@@ -0,0 +1,92 @@
+import { afterEach, expect, test } from "bun:test";
+import { mkdirSync, mkdtempSync, readFileSync, rmSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { updateApp } from "../src/update.ts";
+
+const roots: string[] = [];
+afterEach(() => {
+  for (const root of roots.splice(0)) rmSync(root, { recursive: true, force: true });
+});
+
+const CONFIG = `export default {
+  compatibilityDate: "2026-08-02",
+  frameworkBehaviour: 1,
+  functions: { legacyDefaultRuntime: "current" },
+  compatibility: { legacyEmit: false, stringLayouts: false },
+  observability: { sampleRate: 1 },
+};
+`;
+
+const NESTED_CONFIG = `export default {
+  compatibilityDate: "2026-08-02",
+  frameworkBehaviour: 1,
+  functions: { legacyDefaultRuntime: "current", overrides: { a: { b: 1 } } },
+  compatibility: { legacyEmit: false, nested: { deeper: { value: true } } },
+  observability: { sampleRate: 1 },
+};
+`;
+
+function project(config = CONFIG): string {
+  const root = mkdtempSync(join(tmpdir(), "wrnexus-migrate-"));
+  roots.push(root);
+  mkdirSync(join(root, "app"), { recursive: true });
+  writeFileSync(
+    join(root, "package.json"),
+    JSON.stringify({
+      name: "config-migrate-app",
+      dependencies: { "@wrnexus/core": "^0.8.0" },
+      wrnexus: { version: "0.8.0" },
+    }),
+  );
+  writeFileSync(join(root, "wrnexus.config.ts"), config);
+  return root;
+}
+
+test("the removed keys are deleted and the rest is kept", () => {
+  const root = project();
+  updateApp(root, "0.9.0", false);
+  const config = readFileSync(join(root, "wrnexus.config.ts"), "utf8");
+
+  expect(config).not.toContain("compatibilityDate");
+  expect(config).not.toContain("frameworkBehaviour");
+  expect(config).not.toContain("legacyDefaultRuntime");
+  expect(config).not.toContain("legacyEmit");
+  expect(config).toContain("observability");
+});
+
+test("running it twice changes nothing the second time", () => {
+  const root = project();
+  updateApp(root, "0.9.0", false);
+  const once = readFileSync(join(root, "wrnexus.config.ts"), "utf8");
+  updateApp(root, "0.9.0", false);
+
+  expect(readFileSync(join(root, "wrnexus.config.ts"), "utf8")).toBe(once);
+});
+
+test("a dry run writes nothing", () => {
+  const root = project();
+  updateApp(root, "0.9.0", true);
+
+  expect(readFileSync(join(root, "wrnexus.config.ts"), "utf8")).toBe(CONFIG);
+});
+
+test("a nested object value under a removed key does not corrupt the file", () => {
+  const root = project(NESTED_CONFIG);
+  updateApp(root, "0.9.0", false);
+  const config = readFileSync(join(root, "wrnexus.config.ts"), "utf8");
+
+  expect(config).not.toContain("compatibilityDate");
+  expect(config).not.toContain("frameworkBehaviour");
+  expect(config).not.toContain("legacyDefaultRuntime");
+  expect(config).not.toContain("legacyEmit");
+  expect(config).not.toContain("overrides");
+  expect(config).not.toContain("nested");
+  expect(config).toContain("observability");
+
+  // The file must remain valid, balanced TypeScript: an equal number of
+  // opening and closing braces, and it must still be parseable as a module.
+  const opens = (config.match(/\{/g) ?? []).length;
+  const closes = (config.match(/\}/g) ?? []).length;
+  expect(opens).toBe(closes);
+});