How can I properly define the type for an object in Typescript where the key is a string and the value is an array of objects?

let colors = {
    "red" : [
        {
            title: "red",
            summary : "red is ...",
            image : "image of red", // optional
            link : "https:// ..."
        }, 
        {
            title: "red",
            summary : "red is ...",
            link : "https:// ..."
        }
    ], 
    "green" : [{ ... }]
}

This coding structure exemplifies the format I am aiming for, although I am encountering difficulties with it.

Answer №1

To fully utilize TypeScript, it is necessary to create a distinct interface for the properties of your color objects.

interface ColorProperty {
            title: string;
            summary : string;
            image? : string;
            link : string;
} ;


let colors : {
    [key : string] : ColorProperty[]
}= {
    "blue" : [
        {
            title: "blue",
            summary : "blue is ...",
            image : "image of blue", // this is an optional option
            link : "https:// ..."
        }, 
        {
            title: "blue",
            summary : "blue is ...",
            link : "https:// ..."
        }
    ], 
    "yellow" : [{ ... }]
}


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