resolve < Promise < JavaScript

The Promise resolve() static method "resolves" a given value to a Promise. If the value is a promise, that promise is returned; if the value is a thenable, Promise.resolve() will call the then() method with two callbacks it prepared; otherwise the returned promise will be fulfilled with the value. This function flattens nested layers of promise-like objects (e.g. a promise that fulfills to a promise that fulfills to something) into a single layer — a promise that fulfills to a non-thenable value.

    
    const promise1 = Promise.resolve(123);

    promise1.then((value) => {
      console.log(value);
    });
    // 123