Optional chain access implementation in TypeScript.
Uses Proxy API
npm install optional-chain-proxyimport { optional } from "optional-chain-proxy";
type User {
name?: {
first: string
}
}
const user: User = getUser(); // { name: null }
const optionalUser = optional(user);
optionalUser.name.first; // undefined, does not throw an exception.optional-chain-proxy exports optional function.
optional function lets a target object or an array and return the object which does not throw an exception even if accessing to null or undefined values.
optional<T>(object: T) :: T