Notice

Notice is an extensible logger with an intuitive tree-like structure. Notice excels in seamless cross-package logging while offering a simple yet robust API for developers.

Simplest example

final notice = Notice(
  outputs: [ConsoleOutput()],
);
notice.info("Logging is fun!");
notice.error("An error accoured", error: "Example error");

Running this code will give you

Creating sub-loggers

Always know where the message came from using breadcrumbs

final notice = Notice(outputs: [ConsoleOutput.simple()], breadcrumb: "main");
final subNotice = Notice.childOf(notice, breadcrumb: "foo");
subNotice.info("Sub Logger message");

prints:
2024-01-18T14:47:30.117487 main.foo INFO: Sub Logger message

Filtering messages

If you need multiple filters you can also use CombinedFilter

final notice = Notice(
  outputs: [
    FilteredOutput(
      LevelFilter(NoticeLevel.info),
      ConsoleOutput.simple(),
    ),
  ],
);
notice.info("Will be logged");
notice.warn("Will also be logged");
notice.trace("Will not be logged");

prints:
2024-01-18T14:47:30.716747 INFO: Will be logged
2024-01-18T14:47:30.721771 WARN: Will also be logged

Third-Party-Package logging

Notice(
  outputs: [ConsoleOutput.simple()],
  registries: [globalNoticeRegistry],
);
final thirdPartyPackageNotice = Notice(
  parent: globalNoticeRegistry,
  breadcrumb: "BarPackage",
);
thirdPartyPackageNotice.error("Error from another package");

prints:
2024-01-18T14:47:31.319375 BarPackage ERROR: Error from another package

Extensible

Create your own implementation of filters and outputs to extend the behaviour of this package

Roadmap

• Flutter library for loggin using dart:developer
  To increase readability when logging from a flutter app This could also make a good opportunity for adding debug widgets
• Adapters to most of the common dart loggers
  To improve the experience when switching to notice and not make package authors clients dependent on it