Sometimes, we want to fix the “Element implicitly has an ‘any’ type because expression of type ‘string’ can’t be used to index type” error with TypeScript.

In this article, we’ll look at how to fix the “Element implicitly has an ‘any’ type because expression of type ‘string’ can’t be used to index type” error with TypeScript.

How to fix the “Element implicitly has an ‘any’ type because expression of type ‘string’ can’t be used to index type” error with TypeScript?

To fix the “Element implicitly has an ‘any’ type because expression of type ‘string’ can’t be used to index type” error with TypeScript, we should declare our variable with a type annotation.

For instance, we write

const color: { [key: string]: any } = {
  red: null,
  green: null,
  blue: null,
};

to declare the color object with the { [key: string]: any }, which lets us include any properties with string keys in the color object.

Conclusion

To fix the “Element implicitly has an ‘any’ type because expression of type ‘string’ can’t be used to index type” error with TypeScript, we should declare our variable with a type annotation.