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brandonweis/cancellablePromise.js

Last active August 1, 2019 08:47
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cancellablePromise.js
export const cancellablePromise = promise => {
let isCanceled = false;
const wrappedPromise = new Promise((resolve, reject) => {
promise.then(
value => (isCanceled ? reject({ isCanceled, value }) : resolve(value)),
error => reject({ isCanceled, error }),
);
});
return {
promise: wrappedPromise,
cancel: () => (isCanceled = true),
};
};
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