chore: swap falsy checks for length checks

Author: sanny-io

packages/cli/src/actions/generate.ts

@@ -320,7 +320,7 @@ async function loadPluginModule(provider: string, basePath: string) {
 
 async function checkForMismatchedPackages(projectPath: string) {
     const packages = await getZenStackPackages(projectPath);
-    if (!packages) {
+    if (!packages.length) {
         return false;
     }
 

packages/cli/src/actions/info.ts

@@ -6,7 +6,7 @@ import { getZenStackPackages } from './action-utils';
  */
 export async function run(projectPath: string) {
     const packages = await getZenStackPackages(projectPath);
-    if (!packages) {
+    if (!packages.length) {
         console.error('Unable to locate package.json. Are you in a valid project directory?');
         return;
     }