Decorate all properties with type metadata in TypeScript #11861
Description
I'm working on a JSON Object-Mapper which would parse a JSON string and produce typed objects, i.e.
class Bar {}
class Foo {
bar: Bar;
}
let json = '{"bar":{}}';
let foo = mapper.fromString(json, Foo);
expect(foo instanceof Foo).toBe(true);
expect(foo.bar instanceof Bar).toBe(true);For this I need design:type metadata for all properties, but I see it's emitted only if a property is decorated (also a bogus decorator will do), e.g.
class Foo { var Foo = (function () {
bar: Bar; function Foo() {
} }
return Foo;
}());
function bogus(t, k) {}
class Foo { var Foo = (function () {
@bogus bar: Bar; function Foo() {
} }
__decorate([
bogus,
__metadata('design:type', Bar)
], Foo.prototype, "bar", void 0);
return Foo;
}());
It would be very useful to have a compiler option to enable the implicit metadata decoration for all design:* metadata, without the need of an additional decorator.