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backend/node_modules/queue-microtask/index.js

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+/*! queue-microtask. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */
+let promise
+
+module.exports = typeof queueMicrotask === 'function'
+  ? queueMicrotask.bind(typeof window !== 'undefined' ? window : global)
+  // reuse resolved promise, and allocate it lazily
+  : cb => (promise || (promise = Promise.resolve()))
+    .then(cb)
+    .catch(err => setTimeout(() => { throw err }, 0))