"Modifying the form of an item by adjusting its variable, and rendering certain object properties as

let myObj = {
    a: {
        value: 1
    },
    b: {
        value: 2
    }
}

myObj = { // How can I make the property b optional in myObj without specifying my own type?
    a: {
        value: 123
    }
}

Is there a way to make the property myObj.b optional without defining a custom type?

https://www.typescriptlang.org/play?#code/DYUwLgBAtgng8gIwFYQLwQN4CgK4gQwC5Mc8yA3fYAVxGIEZTcBfAGiYgWOzIqtuIAmDsyyissRCnQYIAejkQAFgHsA7hDAro+ANYhOEFQAcwASxUA7KgH4ORErzyUadCPUEBmEWKxYgA

Answer №1

Create a type for myObj with an optional property b:

type ObjectType = {
  a: {
    value: number
  },
  b?: {
    value: number
  }
}

Click here for playground link.

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