@yookue/ts-lang-utils/dist/esm/util/MapUtils/getKey.js

Common lang utilities for typescript

import _slicedToArray from "@babel/runtime/helpers/esm/slicedToArray";
import _createForOfIteratorHelper from "@babel/runtime/helpers/esm/createForOfIteratorHelper";
export function getKey(map, value, defaultKey) {
  if (!map || !map.size) {
    return defaultKey;
  }
  var _iterator = _createForOfIteratorHelper(map.entries()),
    _step;
  try {
    for (_iterator.s(); !(_step = _iterator.n()).done;) {
      var _step$value = _slicedToArray(_step.value, 2),
        k = _step$value[0],
        v = _step$value[1];
      if (v === value) {
        return k;
      }
    }
  } catch (err) {
    _iterator.e(err);
  } finally {
    _iterator.f();
  }
  return defaultKey;
}