ReactFlightClientConfigDOM.js — react Source File

Source Code

/**
 * 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
 */

// This client file is in the shared folder because it applies to both SSR and browser contexts.
// It is the configuration of the FlightClient behavior which can run in either environment.

import type {HintCode, HintModel} from '../server/ReactFlightServerConfigDOM';

import ReactDOMSharedInternals from 'shared/ReactDOMSharedInternals';

import {getCrossOriginString} from './crossOriginStrings';

export function dispatchHint<Code: HintCode>(
  code: Code,
  model: HintModel<Code>,
): void {
  const dispatcher = ReactDOMSharedInternals.d; /* ReactDOMCurrentDispatcher */
  switch (code) {
    case 'D': {
      const refined = refineModel(code, model);
      const href = refined;
      dispatcher.D(/* prefetchDNS */ href);
      return;
    }
    case 'C': {
      const refined = refineModel(code, model);
      if (typeof refined === 'string') {
        const href = refined;
        dispatcher.C(/* preconnect */ href);
      } else {
        const href = refined[0];
        const crossOrigin = refined[1];
        dispatcher.C(/* preconnect */ href, crossOrigin);
      }
      return;
    }
    case 'L': {
      const refined = refineModel(code, model);
      const href = refined[0];
      const as = refined[1];
      if (refined.length === 3) {
        const options = refined[2];
        dispatcher.L(/* preload */ href, as, options);
      } else {
        dispatcher.L(/* preload */ href, as);
      }
      return;
    }
    case 'm': {
      const refined = refineModel(code, model);
      if (typeof refined === 'string') {
        const href = refined;
        dispatcher.m(/* preloadModule */ href);
      } else {
// ... (76 more lines)