Defining Array Types in TypeScript JSON

My attempt at coding a class in TypeScript has hit a roadblock. Whenever I try to utilize Jsons in an Array, the system crashes due to a TypeScript error. Here's the class I tried to create:

class Api {
    url: string | undefined;
    credentials: Array<JSON> = [];
    headers: Array<JSON> = [];

    send(url: string, credentials: Array<JSON>, headers: Array<JSON>) {
        this.url = url;
        this.credentials = credentials;
        this.headers = headers;
    }

    bearer(){
        this.headers.push({
            "Authorization" : "Bearer "
        })
    }
}

module.exports = new Api()

Unfortunately, when attempting to set the bearer headers, an error is encountered:

Argument of type '{ Authorization: string; }' is not assignable to parameter of type 'JSON'.
  Object literal may only specify known properties, and '"Authorization"' does not exist in type 'JSON'.

I have tried using interfaces as a solution, but that did not work either. This was my initial interface attempt:

interface credentialType {
    [x: string]: string
}

However, this approach also proved ineffective.

Following that, I made another attempt with a revised interface structure:

interface credentialType {
    type: string;
    value: string
}
...
this.header.push({
     type: 'Authen',
     value: 'Bearer'
})

Despite these efforts, the issue still persists.

Answer №1

If you're encountering an error due to the JSON type being unknown, it's important to determine and modify that in order to resolve the issue with incompatible types. However, as a temporary solution, you can apply a cast if you are confident about the correctness of the type:

this.headers.push({ "Authorization": "Bearer " } as JSON)

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