@mui/x-charts/internals/appendAtKey.js

The community edition of MUI X Charts components.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.appendAtKey = appendAtKey;
/**
 * Given a map of arrays, appends a value to the array at the given key.
 * If no array exists at that key, one is created and the value appended.
 * @param map Map of arrays
 * @param key Key to append the value at
 * @param value Value to append
 */
function appendAtKey(map, key, value) {
  let bucket = map.get(key);
  if (!bucket) {
    bucket = [value];
    map.set(key, bucket);
  } else {
    bucket.push(value);
  }
  return bucket;
}