Generate a Json Serializable Generator using Build Runner in Flutter: Response is Succeeded, but no output is being generated

Question

I have an issue when trying to generate a Json Serializable Generator using Build Runner in Dart. First, I tried to do run flutter packages pub run build_runner build to generate Json Serializable but it showed that it has a conflicting issue. So I run command --delete-conflicting-outputs, to solve the conflicting issue.

After that I tried to run flutter packages pub run build_runner build again to regenerate the Json value. But the result that i got is like this:

succeeded with no outputs

So the output was : [INFO] Succeeded after 137ms with 0 outputs (0 actions)

I get so stressed because of it because all of generated-files were deleted. can somebody tell me what was happening and how to solve this issue?

I have been checking everywhere but still haven't found an answer.

Solution

flutter pub run build_runner watch --delete-conflicting-outputs

Comments

[alex.pulver]

It is better to put the output as text, not as image.

[Günter Zöchbauer]

Did you add @JsonSerializable() annotation to your classes? Did you create a build.yaml, if yes, what does it contain?

[flutteria]

Yes I add a @JsonSerializable(). but I didn't create the build.yaml, i only have the pubspec.yaml and it was ok before i run the --delete-conflicting-outputs

[mousetail]

Please consider adding some explanation to what the exact purpose of this command is

[Krzysztof Cieśliński]

You saved my day. It works. It generates fromJson and toJson methods based on latest changes. Surprisingly it's not generated during build by default :O