True Myth / task / withResolvers

Variable: withResolvers()

const withResolvers: <T, E>() => WithResolvers<T, E> = Task.withResolvers

Standalone function version of Task.withResolvers

Create a pending Task and supply resolveWith and rejectWith helpers, similar to the Promise.withResolvers static method, but producing a Task with the usual safety guarantees.

Examples

Resolution

let { task, resolveWith, rejectWith } = Task.withResolvers<string, Error>();
resolveWith("Hello!");

let result = await task.map((s) => s.length);
let length = result.unwrapOr(0);
console.log(length); // 5

Rejection

let { task, resolveWith, rejectWith } = Task.withResolvers<string, Error>();
rejectWith(new Error("oh teh noes!"));

let result = await task.mapRejection((s) => s.length);
let errLength = result.isErr ? result.error : 0;
console.log(errLength); // 5

Type Parameters

T

T

E

E

Returns

WithResolvers<T, E>