TypeScript - ts(7053) : Element implicitly has an 'any' type because expression of type 'string' can't be used to index

Question

In TypeScript, I declare an interface like this:

export default interface MyDTO {
    readonly num: string;
    readonly entitle: string;
    readonly trb: st         


        

Answer 1

@mhodges, with your suggestions, here is my modified function which seems to work well. However in the following case, I had to add the "as string" otherwise I have the following error:

Type 'string | keyof V 'cannot be used to index type' V'.ts (2536)

public getDefaultComparator(property: keyof V | string, v1: V, v2: V): number {
    let compareReturn = 0;
    if (v1.hasOwnProperty(property)) {
      const compareValue1 = v1[property as string];
      const compareValue2 = v2[property as string];
      if (compareValue1 > compareValue2) {
        compareReturn = 1;
      } else if (compareValue1 < compareValue2) {
        compareReturn = -1;
      }
    }

    return compareReturn;
  }