isPromiseLike

With this function we can check if its argument is like a Promise. In other words, if its argument has a method that is named then.
Quick example
import { isPromiseLike } from "tsafe/isPromiseLike";
​
const simulateNetworkDelay = new Promise<void>(resolve =>
	setTimeout(resolve, 1000)
);
​
const result = isPromiseLike(simulateNetworkDelay);
​
//result === true;
Complementary example
If we have an object that has a method named then:
import { isPromiseLike } from "tsafe/isPromiseLike";
​
const objPromiseLike = {
	then: () => null,
	x: 3,
	y: 4,
};
​
const result = isPromiseLike(objPromiseLike);
​
//result === true;

MethodNames

flip

Last modified 4mo ago