Sometimes, we want to fix Element implicitly has an ‘any’ type because expression of type ‘string’ can’t be used to index type with TypeScript.
In this article, we’ll look at how to fix Element implicitly has an ‘any’ type because expression of type ‘string’ can’t be used to index type with TypeScript.
How to fix Element implicitly has an ‘any’ type because expression of type ‘string’ can’t be used to index type with TypeScript?
To fix Element implicitly has an ‘any’ type because expression of type ‘string’ can’t be used to index type with TypeScript, we use index signatures.
For instance, we write
const color: { [key: string]: any } = {
red: null,
green: null,
blue: null,
};
to add the { [key: string]: any } type to color.
[key: string] is the index signature and it lets us add any string key into the object with the type.
The property value can be anything.
Conclusion
To fix Element implicitly has an ‘any’ type because expression of type ‘string’ can’t be used to index type with TypeScript, we use index signatures.
