Could not resolve detected property at runtime

Hi, I’m using this library with React-Native and I followed the instructions here. However when I try to run the project I get an error syaing: @jsonMember on AppFile.Id could not resolve detected property constructor at runtime. Are you sure, that you have both "experimentalDecorators" and "emitDecoratorMetadata" in your tscofig.json? .

This is my model for AppFile:

import 'reflect-metadata';
import { jsonObject, jsonMember, TypedJSON } from 'typedjson';

@jsonObject
export class AppFile {

    @jsonMember
    Id?: string;

    @jsonMember
    Group?: string;

    @jsonMember
    Name?: string;

    @jsonMember
    Value?: string;
    
    @jsonMember
    Active?: boolean;

    @jsonMember
    CacheTime?: number;
}

I added "experimentalDecorators": true and "emitDecoratorMetadata": true in tsconfig.josn. I also added "plugins": [ ["@babel/plugin-proposal-decorators", { "legacy": true }]] in babel.config.js.

But nothing seems to work, what is the problem with my setup?

[jeromeheissler]

I fix this issue by adding babel-plugin-transform-typescript-metadata

{
  "plugins": [
    ...
    ["babel-plugin-transform-typescript-metadata"],
    ["@babel/plugin-proposal-decorators", { "legacy": true }],
    ["@babel/plugin-proposal-class-properties", { "loose": true }]
  ],
  "presets": [
    "module:metro-react-native-babel-preset"
  ]
}

[florianbepunkt]

@jeromeheissler Thank you so much for posting this, saved my day.