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| /** | |
| * Fetch a remote resource like `fetch` does, but with a time limit. | |
| * @param {Request|string} resource Remote resource to fetch. | |
| * @param {?object} init An options object containing any custom settings that you want to apply to the request. | |
| * @param {number} timeout The amount of time before the request is canceled, in milliseconds | |
| * @returns {Promise<Response>} The response from the server. | |
| */ | |
| const fetchWithTimeout = (resource, init, timeout) => { | |
| let timeoutID = null; | |
| // Not supported in Safari <11 | |
| const controller = window.AbortController ? new window.AbortController() : null; | |
| const signal = controller ? controller.signal : null; | |
| // The fetch call races a timer. | |
| return Promise.race([ | |
| fetch(resource, Object.assign({signal}, init)).then(response => { | |
| clearTimeout(timeoutID); | |
| return response; | |
| }), | |
| new Promise((resolve, reject) => { | |
| timeoutID = setTimeout(() => { | |
| if (controller) controller.abort(); | |
| reject(new Error(`Fetch timed out after ${timeout} ms`)); | |
| }, timeout); | |
| }) | |
| ]); | |
| }; | |
| module.exports = fetchWithTimeout; | |