26 lines
744 B
JavaScript
26 lines
744 B
JavaScript
'use strict';
|
|
|
|
Object.defineProperty(exports, '__esModule', { value: true });
|
|
|
|
// The source (has been changed) is https://github.com/facebook/react/issues/5465#issuecomment-157888325
|
|
var CANCELATION_MESSAGE = {
|
|
type: 'cancelation',
|
|
msg: 'operation is manually canceled'
|
|
};
|
|
|
|
function makeCancelable(promise) {
|
|
var hasCanceled_ = false;
|
|
var wrappedPromise = new Promise(function (resolve, reject) {
|
|
promise.then(function (val) {
|
|
return hasCanceled_ ? reject(CANCELATION_MESSAGE) : resolve(val);
|
|
});
|
|
promise["catch"](reject);
|
|
});
|
|
return wrappedPromise.cancel = function () {
|
|
return hasCanceled_ = true;
|
|
}, wrappedPromise;
|
|
}
|
|
|
|
exports.CANCELATION_MESSAGE = CANCELATION_MESSAGE;
|
|
exports.default = makeCancelable;
|