react-native/Libraries/Core/setUpSegmentFetcher.js

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow strict-local
 * @format
 */

'use strict';

export type FetchSegmentFunction = typeof __fetchSegment;
export type GetSegmentFunction = typeof __getSegment;

/**
 * Set up SegmentFetcher.
 * You can use this module directly, or just require InitializeCore.
 */

function __fetchSegment(
  segmentId: number,
  options: $ReadOnly<{
    otaBuildNumber: ?string,
    requestedModuleName: string,
    segmentHash: string,
  }>,
  callback: (?Error) => void,
) {
  const SegmentFetcher =
    require('./SegmentFetcher/NativeSegmentFetcher').default;
  SegmentFetcher.fetchSegment(
    segmentId,
    options,
    (
      errorObject: ?{
        message: string,
        code: string,
        ...
      },
    ) => {
      if (errorObject) {
        const error = new Error(errorObject.message);
        (error: any).code = errorObject.code; // flowlint-line unclear-type: off
        callback(error);
      }

      callback(null);
    },
  );
}

global.__fetchSegment = __fetchSegment;

function __getSegment(
  segmentId: number,
  options: $ReadOnly<{
    otaBuildNumber: ?string,
    requestedModuleName: string,
    segmentHash: string,
  }>,
  callback: (?Error, ?string) => void,
) {
  const SegmentFetcher =
    require('./SegmentFetcher/NativeSegmentFetcher').default;

  if (!SegmentFetcher.getSegment) {
    throw new Error('SegmentFetcher.getSegment must be defined');
  }

  SegmentFetcher.getSegment(
    segmentId,
    options,
    (
      errorObject: ?{
        message: string,
        code: string,
        ...
      },
      path: ?string,
    ) => {
      if (errorObject) {
        const error = new Error(errorObject.message);
        (error: any).code = errorObject.code; // flowlint-line unclear-type: off
        callback(error);
      }

      callback(null, path);
    },
  );
}

global.__getSegment = __getSegment;