samples/packages/sass/src/io

Input/Output Shim

This directory contains an API shim for doing various forms of IO across different platforms. Dart chooses at compile time which of the three files to use:

• interface.dart is used by the Dart Analyzer for static checking. It defines the "expected" interface of the other two files, although there aren't strong checks that their interfaces are exactly the same.

• vm.dart is used by the Dart VM, and defines IO operations in terms of the dart:io library.

• js.dart is used by JS platforms. On Node.js, it will use Node's fs and process APIs for IO operations. On other JS platforms, most IO operations won't work at all, although messages will still be emitted with console.log() and console.error().