codex: address PR review feedback (#203)

Author: maxktz

packages/paykit/src/cli/__tests__/init.test.ts

@@ -22,13 +22,15 @@ describe("cli/init", () => {
     const cwd = fs.mkdtempSync(path.join(os.tmpdir(), "paykit-init-"));
 
     try {
-      fs.writeFileSync(path.join(cwd, "package.json"), JSON.stringify({ dependencies: {} }));
-      expect(detectPaykitCli(cwd)).toBe(false);
-
       fs.writeFileSync(
         path.join(cwd, "package.json"),
         JSON.stringify({ dependencies: { paykitjs: "workspace:*" } }),
       );
+      expect(detectPaykitCli(cwd)).toBe(false);
+
+      const packageDir = path.join(cwd, "node_modules", "paykitjs");
+      fs.mkdirSync(packageDir, { recursive: true });
+      fs.writeFileSync(path.join(packageDir, "package.json"), JSON.stringify({ name: "paykitjs" }));
       expect(detectPaykitCli(cwd)).toBe(true);
     } finally {
       fs.rmSync(cwd, { force: true, recursive: true });

packages/paykit/src/cli/commands/init.ts

@@ -1,5 +1,6 @@
 import { exec } from "node:child_process";
 import fs from "node:fs";
+import { createRequire } from "node:module";
 import path from "node:path";
 import { promisify } from "node:util";
 
@@ -65,7 +66,13 @@ function stripeConfig(): string {
 }
 
 export function detectPaykitCli(cwd = process.cwd()): boolean {
-  return isPackageInstalled(cwd, "paykitjs");
+  try {
+    const projectRequire = createRequire(path.join(cwd, "package.json"));
+    projectRequire.resolve("paykitjs/package.json");
+    return true;
+  } catch {
+    return false;
+  }
 }
 
 function getDevCommand(pm: PackageManager): string {