@grafana/ui/dist/cjs/components/Combobox/useLatestAsyncCall.cjs

Grafana Components Library

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var React = require('react');

"use strict";
function useLatestAsyncCall(fn) {
  const latestValueCount = React.useRef(0);
  const wrappedFn = React.useCallback(
    (value) => {
      latestValueCount.current++;
      const requestCount = latestValueCount.current;
      return new Promise((resolve, reject) => {
        fn(value).then((result) => {
          if (requestCount === latestValueCount.current) {
            resolve(result);
          } else {
            reject(new StaleResultError());
          }
        }).catch(reject);
      });
    },
    [fn]
  );
  return wrappedFn;
}
class StaleResultError extends Error {
  constructor() {
    super("This result is stale and is discarded");
    this.name = "StaleResultError";
    Object.setPrototypeOf(this, new.target.prototype);
  }
}

exports.StaleResultError = StaleResultError;
exports.useLatestAsyncCall = useLatestAsyncCall;
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