To override interface property type defined in Typescript d.ts file, we can omit properties from them and extend them.
For instance, we write
interface A {
x: string;
}
export type B = Omit<A, "x"> & { x: number };
to create type B that removes the existing x property with Omit from interface A and add the x property with type number.
We can also create a new interface from an existing one with Omit and extends.
For instance, we write
interface A {
x: string;
}
interface B extends Omit<A, "x"> {
x: number;
}
to create interface B that extends interface A without the x property by extending Omit<A, "x">.
Then we add the x property again with type set to number.
Conclusion
To override interface property type defined in Typescript d.ts file, we can omit properties from them and extend them.
