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/** * Adds the key-value `pair` to `map`. * * @private * @param {Object} map The map to modify. * @param {Array} pair The key-value pair to add. * @returns {Object} Returns `map`. */function addMapEntry(map, pair) {  // Don't return `map.set` because it's not chainable in IE 11.  map.set(pair[0], pair[1]);  return map;}
export default addMapEntry;