Is it possible to create a variable in TypeScript that can hold either true/false or an object of booleans? I'm still learning TS and would like some input on this syntax.
variableA: { a: boolean, b: boolean } | booleanI found a workaround for now, but I'm curious if there's a better way to approach this.
Absolutely, setting it up this way is definitely achievable.
You also have the option of creating an interface like so:
interface MyInterface {
x: boolean;
y: boolean;
}
let myVariable: MyInterface | boolean;
Additional Information:
if((object.treeA as customType)?.propertyX) {
console.log('perform specific action for propertyX')
}
Absolutely! To create a custom type, you can use the following syntax:
type myType = { x: boolean, y: boolean } | boolean
var variable: myType = false;
console.log(variable);
variable = {x:true, y:false};
console.log(variable);
Remember that myType is a type declaration, not a variable.
If you want to simplify your code, consider using one of these options:
interface BooleanObjects {
[key: string]: boolean;
};
type CustomType = BooleanObjects | boolean;
For a more concise version, you can use:
type CustomType = Record<string, boolean> | boolean;
With this setup, you can assign either a true/false value or an object containing multiple key-value pairs with boolean values to a variable of type CustomType.
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