Feature suggestion: Optionally emit property names

[htinc]

Hello Team,

I've created a lot of generic solutions with TypeScript but always struggled with this one. Is there a way to get all properties defined in TypeScript, but at runtime. For Example

class Car { name: string; }

will compile to var Car = /** @class */ (function () { function Car() { } return Car; }());

Could there be a compiler option which would emit

var Car = /** @class */ (function () { function Car() { this.name = null; } return Car; }());

This would allow us to create better generic solutions with Typescript. I searched a lot and maybe used the wrong search terms, but I could not find a solution to this.

[AnyhowStep]

undefined is better than null

[ark120202]

With recent changes to the proposal (see #27644) that would be standard behavior (with undefined instead of null and [[Define]] instead of [[Set]]).

[sandersn]

As @ark120202 points out, at this point, this is basically a duplicate of #27644, since the new property emit will be something like Object.defineProperty(this, "name", undefined) for name: string.

[typescript-bot]

This issue has been marked as a 'Duplicate' and has seen no recent activity. It has been automatically closed for house-keeping purposes.

[typescript-bot]

This issue has been marked as a 'Duplicate' and has seen no recent activity. It has been automatically closed for house-keeping purposes.

[typescript-bot]

This issue has been marked as a 'Duplicate' and has seen no recent activity. It has been automatically closed for house-keeping purposes.