promisify | /src/utils/promisify.ts | kafkasaur@v0.0.7

function promisify

import { promisify } from "https://deno.land/x/kafkasaur@v0.0.7/src/utils/promisify.ts";

promisify<T extends (...args: any[]) => any, $FirstParams extends unknown[] = Parameters<T> extends [...infer $FirstParams, infer _] ? $FirstParams : any[]>(fn: T): (...args: $FirstParams) => Promise<Parameters<T> extends [...infer _, infer $Last] ? $Last : any>

Promisifies a given function that has a final callback argument.

Type Parameters

T extends (...args: any[]) => any

optional

$FirstParams extends unknown[] = Parameters<T> extends [...infer $FirstParams, infer _] ? $FirstParams : any[]

Parameters

fn: T

Returns

(...args: $FirstParams) => Promise<Parameters<T> extends [...infer _, infer $Last] ? $Last : any>