Element implicitly has an ‘any’ type because type ‘typeof globalthis’ has no index signature.

When you see the error message “element implicitly has an ‘any’ type because type ‘typeof globalThis’ has no index signature”, it means that you are trying to access a property on an object without explicitly specifying its type, and TypeScript doesn’t have enough information to infer the correct type. This issue usually occurs when you are using an external library or module, and TypeScript cannot determine the type definitions for it automatically.

To rectify this error, you need to provide the correct type annotation or definition for the object being used. Here are a few examples of how you can fix this issue:

1. Using type assertion:

const myObject = {} as { [key: string]: any };
myObject.someProperty = 'example';

In this example, we use type assertion to explicitly specify that myObject is an object with a dynamic string key and any value. This allows us to access and assign properties without TypeScript throwing any errors.

2. Defining a custom type:

type MyObjectType = { [key: string]: any };

const myObject: MyObjectType = {};
myObject.someProperty = 'example';

Here, we define a custom type MyObjectType that allows an object with a dynamic string key and any value. We then use this type to annotate the myObject variable, ensuring TypeScript understands its structure correctly.

3. Using an external library:

import someLibrary from 'someLibrary';

const myObject: someLibrary.ObjectType = {};
myObject.someProperty = 'example';

If you are using an external library that doesn’t have type definitions included, you might need to create your own type declarations or search for community-contributed type definitions. By specifying the correct type annotation, you can prevent the “element implicitly has an ‘any’ type” error and ensure proper type safety.

Remember that it’s important to provide accurate type information whenever possible to fully leverage the benefits of TypeScript’s type system and catch potential errors during development.