unenum/result.from.js

Universal ADT utilities for TypeScript.

export function from(fn) {
    try {
        const value = fn();
        if (value instanceof Promise) {
            return value
                .then((value) => ({ _type: "Ok", value }))
                .catch((error) => ({ _type: "Error", error }));
        }
        return { _type: "Ok", value };
    }
    catch (error) {
        return { _type: "Error", error };
    }
}