Create a lazy promise that defers execution until it's awaited or when `.then()`, `.catch()`, or `.finally()` is called
npm install p-lazy> Create a lazy promise that defers execution until it's awaited or when .then(), or .catch(), or .finally() is called
Useful if you're doing some heavy operations and would like to only do it when the promise is actually used.
``sh`
npm install p-lazy
`js
import PLazy from 'p-lazy';
const lazyPromise = new PLazy(resolve => {
someHeavyOperation(resolve);
});
// someHeavyOperation is not yet called
await doSomethingFun;
// someHeavyOperation is called`
console.log(await lazyPromise);
Same as the Promise constructor. PLazy is a subclass of Promise.
Create a PLazy promise from a promise-returning or async function.
Create a PLazy promise that is resolved with the given value, or the promise passed as value.
Create a PLazy promise that is rejected with the given reason`.
- p-cancelable - Create a promise that can be canceled
- p-defer - Create a deferred promise
- lazy-value - Create a lazily evaluated value
- define-lazy-prop - Define a lazily evaluated property on an object
- More…