The parameter type 'string | VNode' does not align with the expected type 'VNode & string' for this argument

Hi there, I might be mistaken but I could really use some help with this issue I'm facing:

Argument of type 'string | VNode' is not assignable to parameter of type 'VNode & string'. Type 'string' is not assignable to type 'VNode & string'. Type 'string' is not assignable to type 'VNode'.

It happens when I attempt to execute the following code:

addChild(child: VNode | string) {
    this._children.push(child);
    return 1
}

Here is the VNode Interface structure:

interface VNode {
readonly _tagName: string;
_attrs: {};
_children: VNode[] | string[];
 }

I recently transitioned to TS and I might be making some mistakes, so any help would be greatly appreciated....

Answer №1

It appears that there is an error in the typing for the _children property. It should be defined as an Array OF VNode OR string instead of

Array OF string OR Array OF VNode
:

interface VNode {
  readonly _tagName: string;
  _attrs: {};
  _children: Array<VNode | string>;
}

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