I have this interface :
interface Config {
height : number;
width : number;
[propName : string] : any;
}
as you can see I have [propName : string] : any
which allow me to have any other properties but I need to disallow property with the name key
for example.
in other words I want to allow any other property but key
You could add an additional property key?: undefined
to Config
:
interface Config {
height: number;
width: number;
key?: undefined; // add this line
[propName: string]: any;
}
const res1: Config = { height: 3, width: 4, me: "too" } // works
const res2: Config = { height: 3, width: 4, me: "too", key: "dsaf" } // error
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.