Is it possible in TypeScript to define an extended type for a global object using the `typeof` keyword?
Example 1:
window.id = 1
interface window{
id: typeof window.id;
}
Example 2:
Array.prototype.unique = function() {
return [...new Set(this)];
};
interface Array<T> {
// unique(): Array<T>;
unique(): typeof Array.prototype.unique
}
To add a custom property to the Window type, you can follow this approach:
const value = "custom"
declare global {
interface Window {
value: typeof value
}
}
window.value = "custom" // Works fine
It's important to note that in your example, using directly referenced variable value will not compile correctly within its type annotation.
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