Extract values from an object using Typescript

Here is my JavaScript code:

const { a, b, c } = {
    a : "hello",
    b : "stackoverflow",
    c : "it's greate"
};

I am interested in converting this to TypeScript. Is there any solution for this?

Answer №1

Just like captain-yossarian pointed out, this solution is also compatible with TypeScript. It's best to start by defining a type for your current "black box" object, where a could be of any type - string, array, etc.:

interface CustomType {
    a: string;
    b: string;
    c: number;
}

const { a, b, c }: CustomType = {
    a : "hello",
    b : "world",
    c : "this won't work because c needs to be a number!"
};

This way, your IDE/editor will recognize that a and b are strings, and that c must be a number (and it will also raise an error since c is not a number). This approach becomes essential as your project grows in size and complexity. I highly recommend checking out the official TypeScript guide here: https://www.typescriptlang.org/docs/handbook/typescript-in-5-minutes.html

Answer №2

This code snippet is written in TypeScript and is already valid! To further enhance the code, you can define a type for more structured coding.

export type Data = {
   name: string,
   age: number,
   details: CustomType
}

const { name, age, details }: Data = {
    name : "John Doe",
    age : 25,
    details : {}
};

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