promise-loading-spinner

Advanced handling of loaders/spinners based on one or multiple Promises.

Why?

• Show a spinner using a promise Spinner will disappear when promise is resolved
• No Spinner for short operations Spinner won't show up for short operations so operation doesn't feel lazy
• Support of multiple promises Spinner will disappear when the last unresolved promise is resolved
• Operations in a sequence If there are multiple operations in a sequence the spinner will disappear when the last operation is finished

See this Codepen.

Install

$ yarn add promise-loading-spinner

Usage

This generates a file size table with multiple sections and groups.

import PromiseLoadingSpinner from 'promise-loading-spinner';
 
const loader = new PromiseLoadingSpinner({
  // options
});
 
// ...
 
const myPromise = new Promise((resolve) => {
  setTimeout(() => {
    resolve('done');
  }, 5000);
});
 
loader.loader(myPromise);

You can also use a wrapper function for a function that returns a promise or uses await:

const myFunction = loader.wrapFunction(async (url) => {
  const response = await fetch(url);
  const result = await response.json();
  return result;
});
 
myFunction(someUrl);

Options

License

MIT © 2019 Jens Simon