vojtajina / js2dart Goto Github PK

Unnecessarily changes generated files in case they are checked in or published somewhere.

Helps in rewriting method names for built ins like arrays, ...

... so you could compile js2dart using js2dart to Dart, so you could compile it back to JS and use it to compile JS to Dart, then compile is back and run it :)

1. Only allow assignments to fields in constructor and translate these assignment into constructor initializers
2. Make field declaration explicit through @field annotation
3. Make const constructors in Dart through @const annotation

Example:

class Annotation {
  @field('final name:String')
  @field('final age:int')
  @const constructor(name:String, age:int) {
    this.name = 'Hello ' + name;
    this.age = age + 0;
  }
}

@Annotation('usage')
class Foo {}

this needs to transpile to:

class Annotation {
  final String name;
  final int age;
  const Annotation(String name, int age): 
     name = 'Hello ' + name,
     age = age + 0;
}

@Annotation('usage')
class Foo {}

This tool is awesome, please continue developing it. Porting libraries would be a breeze. But can it also help converting Polymer elements from javascript to Polymer.Dart, including HTML templates? That would require to add some semantic conversion on top of the syntactic, but it would be worthwile. Please consider this.

How is this used? For instance, I have a .js file I'd like to convert to a .dart file. Is this what this tool is for? If so, how do I run/use it?