JavaScript heap out of memory

[rehiy]

[11:18:12] ionic-app-scripts 1.1.4
[11:18:12] build prod started ...
[11:18:12] clean started ...
[11:18:12] clean finished in 1 ms
[11:18:12] copy started ...
[11:18:12] ngc started ...
[11:19:30] ngc finished in 77.54 s
[11:19:30] preprocess started ...
[11:19:30] optimization started ...
[11:19:30] copy finished in 78.36 s
[11:19:58] optimization finished in 28.39 s
[11:19:58] preprocess finished in 28.39 s
[11:19:58] webpack started ...
FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory

Your system information:

ordova CLI: 6.5.0
Ionic Framework Version: 2.2.0
Ionic CLI Version: 2.2.1
Ionic App Lib Version: 2.2.0
Ionic App Scripts Version: 1.1.4
ios-deploy version: Not installed
ios-sim version: Not installed
OS: Windows 10
Node Version: v6.10.0
Xcode version: Not installed

[themastersoda]

Try changing @ionic/app-scripts package in node_modules like in this PR: #768
It seems to have worked for some of the users.
However, it didn't work for me exactly like as shown there, so i had to add the --max-_old_space_size=2048 flag to my ./node_modules/.bin/ionic-app-scripts.cmd (or the one without extension, depending on your OS).
I have no idea why this is not included in the package itself yet, but in the meantime you can apply this fix yourself.

[kleeb]

Have the same problem after upgrading to 2.2.0, but only on the release build.
I do confirm that adding --max_old_space_size=2048 to the script solves the javascript heap size, however after that I am getting:

[10:20:35]  rollup finished in 36.66 s 
[10:20:35]  sass started ... 
[10:20:35]  transpile bundle started ... 
[10:20:55]  build prod failed: Maximum call stack size exceeded 
[10:20:55]  ionic-app-script task: "build" 
[10:20:55]  RangeError: Maximum call stack size exceeded 
RangeError: Maximum call stack size exceeded
    at isMatchingReference (/Users/kleeb/workspace/ionic/node_modules/typescript/lib/typescript.js:33297:37)
    at getTypeAtFlowArrayMutation (/Users/kleeb/workspace/ionic/node_modules/typescript/lib/typescript.js:33913:21)
    at getTypeAtFlowNode (/Users/kleeb/workspace/ionic/node_modules/typescript/lib/typescript.js:33847:32)
    at getTypeAtFlowArrayMutation (/Users/kleeb/workspace/ionic/node_modules/typescript/lib/typescript.js:33914:36)

[kleeb]

Forget it. I was using Typescript 2.2.1, switching back to recommended 2.0.9 works like charm.

[themastersoda]

Strange, maybe you are using different typescript version than suggested?
After adding --max_old_space_size=2048 building with --prod flag succeeds for me, however application is stuck with white screen on startup and inspecting shows error Uncaught TypeError: Cannot read property '_' of undefined. However, dev build works without any problems.

EDIT: quick thinking, you fixed it before i was able to post it! 🥇

[danbucholtz]

Fixed in 1.2.0.

Thanks,
Dan