Can you provide guidance on how to format index signatures for objects in TypeScript

Currently, I am utilizing TypeScript in conjunction with Angular 1.5 and the Angular 1.5 type definition file. However, I am facing a challenge in defining the bindings within an Angular component.

Within the definition file, the bindings are defined as follows:

interface IComponentOptions {
  ...
  bindings?: {[binding: string]: string};
  ...
}

My concern is how to properly construct the Javascript object:

.component('myComponent', {
  templateUrl: 'template.html',
  controller: MyController,
  controllerAs: 'vm',
  bindings: {
    one: '<',
    two: '<'
  }
});

The code provided above results in the following error:

Type '{ one: string; two: string; }' is not assignable to type '{ [binding: string]: string; }'.

I would greatly appreciate any help or suggestions on this matter!

javascripttypescript

Answer №1

The error message 'Type '{ one: string; two: string; }' is not compatible with type '{ [binding: string]: string; }'

It seems like this issue may be related to using an outdated version of TypeScript. The code should work correctly with the latest compiler.

interface IComponentOptions {
    bindings?: { [binding: string]: string };
}

var componentOptions: IComponentOptions = {
    bindings: {
        one: '<',
        two: '<'
    }
};

You can test it out here

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