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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]();
}
}
/**
* @param {Function} fn
*/
export function call_once(fn) {
let called = false;
/** @type {unknown} */
let result;
return function () {
if (!called) {
called = true;
result = fn();
}
return result;
};
}
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