Interfaces in Typescript

In my Angular 2 project, I am working on creating an interface for a complex object. Here is the code snippet of the object:

// Defining the render state object
this.aRenderState = {
  model: "",
  colour: false,
  showWireframe: false,
  showGrid: true,
  clipping: {
      enabled: false,
      visible: false,
      planes: [
          {
              name: 'X',
              plane: new THREE.Plane(new THREE.Vector3(1, 0, 0), 0),
              object: null,
              enabled: true,
              flip: false,
              size: [this.aDomain.getSize().z, this.aDomain.getSize().y],
          },
          {
              name: 'Y',
              plane: new THREE.Plane(new THREE.Vector3(0, 1, 0), 0),
              object: null,
              enabled: false,
              flip: false,
              size: [this.aDomain.getSize().x, this.aDomain.getSize().z]
          },
          {
              name: 'Z',
              plane: new THREE.Plane(new THREE.Vector3(0, 0, -1), 0),
              object: null,
              enabled: false,
              flip: false,
              size: [this.aDomain.getSize().x, this.aDomain.getSize().y]
          },
      ]
  }
}

Here's my attempt at defining interfaces for the above object:

export interface IPlane {
  name: string;
  plane: THREE.Plane;
  object: {};
  enabled: boolean;
  flip: boolean;
  size: number[];
}

export interface IClipping {
  enabled: boolean;
  visible: boolean;
  planes: IPlane[];
}

export interface IRenderState {
  model: string;
  colour: boolean;
  showWireframe: boolean;
  showGrid: boolean;
  clipping: IClipping;
}

However, when I try to run the project, I encounter the following error message:

Type '{ model: string; colour: false; showWireframe: false; showGrid: true; clipping: { enabled: false;...' is not assignable to type 'IRenderState'. Types of property 'clipping' are incompatible. Type '{ enabled: false; visible: false; planes: [{ name: string; plane: Plane; object: null; enabled: t...' is not assignable to type '{ enabled: boolean; visible: boolean; planes: [IPlane, IPlane, IPlane]; }'. Types of property 'planes' are incompatible. Type '[{ name: string; plane: Plane; object: null; enabled: true; flip: false; size: [number, number]; ...' is not assignable to type '[IPlane, IPlane, IPlane]'. Type '{ name: string; plane: Plane; object: null; enabled: true; flip: false; size: [number, number]; }' is not assignable to type 'IPlane'. Types of property 'size' are incompatible. Type '[number, number]' is not assignable to type '[0, 0]'. Type 'number' is not assignable to type '0'.)

I'm struggling to understand where I have made a mistake in my code.

Answer №1

There is a new "object" type in Typescript 2.2 (all lowercase). It is highly advised to start using this type going forward.

interface IPlane {
    object: object;
}

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