Type Alias InferSuccess<T>

InferSuccess: [T] extends [(...args: any[]) => ResultMaybeAsync<infer U, any>]
? U
: [T] extends [ResultMaybeAsync<infer U, any>] ? U : never

Infers the Success value type T from a Result or a function returning a Result.

Type Parameters

T
A ResultMaybeAsync type or a function returning it.

Example: From a result object

import { Result } from '@praha/byethrow';

type R = Result.Result<number, string>;
type SuccessValue = Result.InferSuccess<R>; // number

Example: From a function

import { Result } from '@praha/byethrow';

const fn = () => Promise.resolve({ type: 'Success', value: 123 } as const);
type SuccessValue = Result.InferSuccess<typeof fn>; // number