Issues with TypeScript Optional Parameters functionality

I am struggling with a situation involving the SampleData class and its default property prop2.

class SampleData {
   prop1: string;
   prop2: {} = {};
 }

 export default SampleData;

Every time I attempt to create a new instance of SampleData without specifying prop2, it triggers a compilation error.

The argument '{ prop1: string; }' is not compatible with the parameter expected for type 'SampleData'. The object '{ prop1: string; }' does not include the required properties message, data

class Test {

  constructor() {
     this.method1({ prop1: 'asdf' })
  }

  method1(data: SampleData) {
  }
}

Answer №1

If you want to include optional parameters in your models, make sure to use ?.

class SampleData {
   property1: string;
   property2?: {} = {};
}

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