Function keyValueArraySet

packages/core/src/util/array_utils.ts:196–210

(
  keyValueArray: KeyValueArray<V>,
  key: string,
  value: V,
)

 * @returns index (always even) of where the value vas set.
 */
export function keyValueArraySet<V>(
  keyValueArray: KeyValueArray<V>,
  key: string,
  value: V,
): number {
  let index = keyValueArrayIndexOf(keyValueArray, key);
  if (index >= 0) {
    // if we found it set it.
    keyValueArray[index | 1] = value;
  } else {
    index = ~index;
    arrayInsert2(keyValueArray, index, key, value);
  }
  return index;
}

/**
 * Retrieve a `value` for a `key` (on `undefined` if not found.)