ts-node breaks Date reflection mechanism

import "reflect-metadata";

const CollectMetadata: PropertyDecorator = (target, propertyKey) => {
    const ReflectType = Reflect.getMetadata("design:type", target, propertyKey);
    console.log(ReflectType);
    console.log(ReflectType === Date);
}

class Test {
    @CollectMetadata
    property: Date;
}

ts-node output:

PS E:\#Programowanie\#GitHub\type-graphql> npx ts-node src/date.ts
E:\#Programowanie\#GitHub\type-graphql\node_modules\ts-node\dist\bin.js
[Function: Object]
false

tsc and node output:

PS E:\#Programowanie\#GitHub\type-graphql> npx tsc; node build/date.js
E:\#Programowanie\#GitHub\type-graphql\node_modules\typescript\bin\tsc
[Function: Date]
true

I have no idea what’s going on, how can we check the emitted js files? I’m using ts-node 4.1.0 😉

[MichalLytek]

I would imagine every type information reflection would not work with type information, but perhaps it’s only type information from external files? I have not verified this.

I’ve tested it and every single reflection works (classes from external files, String, Number, Boolean, etc.), only the Date is reflected as Object in this mode. That’s why it’s weird, should we bump the question to the TS team?

[EvanDarwin]

👍 I’ve also encountered this issue