Attribute of class removed

[tcastelly]

I'm using VueJS + FlowJS, when I remove types, attributes of class not initialized are removed too.
Unfortunately initialize variable is not possible here with VueJS because it come from a parent. So I can't rewrite it, there is an error at runtime.

e.g:

@Component
export default class UserDetails extends Vue {
  @Prop({ type: Number, required: true })
  id: number;
}

After flow-remove-types

@Component
export default class UserDetails extends Vue {
  @Prop({ type: Number, required: true })
}

That I expect:

@Component
export default class UserDetails extends Vue {
  @Prop({ type: Number, required: true })
  id;
}

Is there a solution ?
Thank you very much.

[motiz88]

We should be able to preserve uninitialised class fields in the output, but I worry that this will cause problems for people who may still be using the class field syntax purely for Flow typing purposes (e.g. still setting values in the constructor). V8 has just started to ship support for class fields, so it'll be a while before everyone is, say, using flow-node with a version of Node that has them.

Now, we could introduce this as a configurable flag, but it might be simpler to just use @babel/plugin-transform-strip-types in your case, since you're probably already compiling the decorator syntax (etc) with Babel.