Build failing on Mac 'stdout maxBuffer length exceeded'

When I run cordova build ios --verbose I get the following error:

This app does not have additional resource files defined
Prepared iOS project successfully
No scripts found for hook "after_prepare".
No scripts found for hook "before_compile".
stdout maxBuffer length exceeded
RangeError [ERR_CHILD_PROCESS_STDIO_MAXBUFFER]: stdout maxBuffer length exceeded
    at Socket.onChildStdout (child_process.js:354:14)
    at Socket.emit (events.js:198:13)
    at addChunk (_stream_readable.js:288:12)
    at readableAddChunk (_stream_readable.js:265:13)
    at Socket.Readable.push (_stream_readable.js:224:10)
    at Pipe.onStreamRead (internal/stream_base_commons.js:94:17)

Any idea what could be the cause? I removed the platforms directory already… I think it is happening since I upgraded XCode to 11.4 a couple of days ago.

I tested a new app, it is showing the same error


   Ionic CLI                     : 6.4.0 (/Users/***/.nvm/versions/node/v10.16.3/lib/node_modules/@ionic/cli)
   Ionic Framework               : @ionic/angular 4.11.2
   @angular-devkit/build-angular : 0.803.12
   @angular-devkit/schematics    : 8.3.12
   @angular/cli                  : 8.3.12
   @ionic/angular-toolkit        : 2.1.1


   Cordova CLI       : 9.0.0 (cordova-lib@9.0.1)
   Cordova Platforms : ios 5.1.1
   Cordova Plugins   : cordova-plugin-ionic-keyboard 2.2.0, cordova-plugin-ionic-webview 4.1.3, (and 16 other plugins)


   cordova-res (update available: 0.11.0) : 0.8.1
   native-run (update available: 0.3.0)   : 0.2.9


   Android SDK Tools : 26.1.1 (/Users/***/Library/Android/sdk)
   ios-deploy        : 1.9.4
   ios-sim           : 8.0.2
   NodeJS            : v10.16.3 (/Users/***/.nvm/versions/node/v10.16.3/bin/node)
   npm               : 6.14.3
   OS                : macOS Catalina
   Xcode             : Xcode 11.4 Build version 11E146

Does it also happen without verbose?

I found out that node v10.16.3 and node v10.19.0 have this issue. When upgrading to node v12.16.1 it works without a problem.

The default maxBuffer size in v10 is 200KB, the default maxBuffer in v12 is 1MB.


I have the some problem with an old Ionic v1 project (it started to happen when I upgraded XCode to version 12) - but, in my case, I can’t upgrade Node to version 12 because Ionic v1 projects use gulp v3 and it doesn’t work with Node 12 (just Node 10). I’m still trying to find a solution.

Solution found: I had to update “@ionic/v1-toolkit” in my Ionic v1 project, so I could update Gulp to version 4 and Node to version 12 (the only issue is that the old “gulpfile.js” is not compatible with Gulp 4, so it needs to be updated as well).