refactor: delete the compatibility config surface

2026-08-20 01:11:35 +05:30
parent d19595c7ba
commit 5c8f3ede54
14 changed files with 46 additions and 261 deletions
@@ -0,0 +1,28 @@
+import { expect, test } from "bun:test";
+import { validateAppConfig } from "../src/config.ts";
+
+// A stale config must fail loudly. Silently ignoring a removed key leaves
+// someone believing a flag still applies.
+const REMOVED = [
+  { key: "compatibilityDate", config: { compatibilityDate: "2026-08-02" } },
+  { key: "frameworkBehaviour", config: { frameworkBehaviour: 1 } },
+  { key: "functions", config: { functions: { legacyDefaultRuntime: "current" } } },
+  { key: "compatibility", config: { compatibility: { legacyEmit: false } } },
+];
+
+for (const { key, config } of REMOVED) {
+  test(`a config still setting "${key}" is rejected with a message naming it`, () => {
+    const issues = validateAppConfig(config as never);
+    const match = issues.find((issue) => issue.path === key || issue.path.startsWith(`${key}.`));
+
+    expect(match).toBeDefined();
+    expect(match!.severity).toBe("error");
+    expect(match!.message.toLowerCase()).toContain("removed");
+  });
+}
+
+test("a config without those keys is accepted", () => {
+  const issues = validateAppConfig({} as never);
+
+  expect(issues.filter((issue) => issue.severity === "error")).toEqual([]);
+});