Flutter-intellij: support expression evaluation for Flutter web apps

[devoncarew]

This is a tracking issue to support expression evaluation for Flutter web apps.

[annagrin]

Expression evaluation should work properly in IntelliJ (with ~--enable-web-expression-evaluation~ --web-enable-expression-evaluation flag for flutter) after the following PR merges:

https://github.com/flutter/flutter/pull/56958

[annagrin]

@devoncarew the PR above has merged, is this enough to close this issue?

[devoncarew]

Yup, I think we can consider this complete now.

[Freundschaft]

im not sure if I completely understand how to use the --enable-web-expression-evaluation flag, how do I configure it in Android Studio?

[devoncarew]

Sure, there are two things you need to do:

• enable flutter web on the master, dev, and beta channels: https://flutter.dev/docs/get-started/web#set-up
• when running an app, run with the --web-enable-expression-evaluation flag to flutter run; In IntelliJ, this can be passed in in the run/debug launch configuration dialog

[Freundschaft]

thats what I tried, but I get

Could not find an option named "enable-web-expression-evaluation".

Run 'flutter -h' (or 'flutter -h') for available flutter commands and options.

this is my config

could it be somehow related to the fact that im running flutter on windows?

[devoncarew]

Ah, it should be --web-enable-expression-evaluation (not --enable-web-expression-evaluation); I'll update the instructions above.

[Freundschaft]

perfect, works now, thanks!

[stuz5000]

Any reason why this isn't the default. Hands up who debugs their web apps?

[annagrin]

We had to work out a few bugs before making it default. It should be default now in flutter master channel. Please report any bugs!