How can I incorporate dynamic fields into a Typescript type/interface?

In my Typescript interface, I have a predefined set of fields like this:

export interface Data {
   date_created: string;
   stamp: string;
 }
let myData: Data;

But now I need to incorporate "dynamic" fields that can be determined only at runtime. This means I need to do something like:

const dynamicFieldName = getDynamicFieldNameFromSomeDataSource(); // type is string. 
mydata[dynamicFieldName] = dynamicFieldValue;

However, when attempting this approach, I encounter a Typescript Error:

Error: TS7017: Element implicitly has an 'any' type because type 'Data' has no index signature.

How can I enable the ability to dynamically add fields to my Typescript object? Essentially, how can I include the necessary 'index signature' in an interface?

Answer №1

Here is a potential solution for what you are seeking:

interface information {
    [prop: string]: string;
}

It's important to note that this approach may mean sacrificing the ability to include specific properties like date_created and stamp, since they would also need to be of type string in this scenario.

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