Fix/next js predeploy hooks

CHANGELOG.md

@@ -3,4 +3,5 @@
 - Fix bug in auth emulator in which createdAt was not set for signInWithIdp new users. (#5203)
 - Default to --no-localhost when calling login from Google Cloud Workstations
 - Support the x-goog-api-key header in auth emulator. (#5249)
+- Fix bug in deploying web frameworks when a predeploy hook was configured in firebase.json (#5199)
 - Fix bug where function deployments using --only filter sometimes failed deployments. (#5280)

src/deploy/lifecycleHooks.ts

@@ -48,7 +48,7 @@ function getChildEnvironment(target: string, overallOptions: any, config: any) {
   let resourceDir;
   switch (target) {
     case "hosting":
-      resourceDir = overallOptions.config.path(config.public);
+      resourceDir = overallOptions.config.path(config.public ?? config.source);
       break;
     case "functions":
       resourceDir = overallOptions.config.path(config.source);