Function updateArray

client/src/utils/jsonUtils.ts:142–184

* Updates an array at a specific path

(
  array: JsonValue[],
  path: string[],
  value: JsonValue,
)

 * Updates an array at a specific path
 */
function updateArray(
  array: JsonValue[],
  path: string[],
  value: JsonValue,
): JsonValue[] {
  const [index, ...restPath] = path;
  const arrayIndex = Number(index);

  if (isNaN(arrayIndex)) {
    console.error(`Invalid array index: ${index}`);
    return array;
  }

  if (arrayIndex < 0) {
    console.error(`Array index out of bounds: ${arrayIndex} < 0`);
    return array;
  }

  let newArray: JsonValue[] = [];
  for (let i = 0; i < array.length; i++) {
    newArray[i] = i in array ? array[i] : null;
  }

  if (arrayIndex >= newArray.length) {
    const extendedArray: JsonValue[] = new Array(arrayIndex).fill(null);
    // Copy over the existing elements (now guaranteed to be dense)
    for (let i = 0; i < newArray.length; i++) {
      extendedArray[i] = newArray[i];
    }
    newArray = extendedArray;
  }

  if (restPath.length === 0) {
    newArray[arrayIndex] = value;
  } else {
    newArray[arrayIndex] = updateValueAtPath(
      newArray[arrayIndex],
      restPath,
      value,
    );
  }
  return newArray;
}

/**
 * Updates an object at a specific path