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// Adapted from https://github.com/then/is-promise/blob/master/index.js
// Distributed under MIT License https://github.com/then/is-promise/blob/master/LICENSE
/**
* @template [T=any]
* @param {any} value
* @returns {value is PromiseLike<T>}
*/
export function is_promise(value) {
return typeof value?.then === 'function';
}
/** @param {Function} fn */
export function run(fn) {
return fn();
}
/** @param {Array<() => void>} arr */
export function run_all(arr) {
for (var i = 0; i < arr.length; i++) {
arr[i]();
}
}
/**
* TODO replace with Promise.withResolvers once supported widely enough
* @template T
* @returns {PromiseWithResolvers<T>}
*/
export function deferred() {
/** @type {(value: T) => void} */
var resolve;
/** @type {(reason: any) => void} */
var reject;
/** @type {Promise<T>} */
var promise = new Promise((res, rej) => {
resolve = res;
reject = rej;
});
// @ts-expect-error
return { promise, resolve, reject };
}
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