1. /**
    
  2.  * Copyright (c) Meta Platforms, Inc. and affiliates.
    
  3.  *
    
  4.  * This source code is licensed under the MIT license found in the
    
  5.  * LICENSE file in the root directory of this source tree.
    
  6.  *
    
  7.  * @flow
    
  8.  */
    
  9. 
    
  10. // test() is part of Jest's serializer API
    
  11. export function test(maybeDehydratedValue) {
    
  12.   const {meta} = require('react-devtools-shared/src/hydration');
    
  13. 
    
  14.   const hasOwnProperty =
    
  15.     Object.prototype.hasOwnProperty.bind(maybeDehydratedValue);
    
  16.   return (
    
  17.     maybeDehydratedValue !== null &&
    
  18.     typeof maybeDehydratedValue === 'object' &&
    
  19.     hasOwnProperty(meta.inspectable) &&
    
  20.     maybeDehydratedValue[meta.inspected] !== true
    
  21.   );
    
  22. }
    
  23. 
    
  24. // print() is part of Jest's serializer API
    
  25. export function print(dehydratedValue, serialize, indent) {
    
  26.   const {meta} = require('react-devtools-shared/src/hydration');
    
  27.   const indentation = Math.max(indent('.').indexOf('.') - 2, 0);
    
  28.   const paddingLeft = ' '.repeat(indentation);
    
  29.   return (
    
  30.     'Dehydrated {\n' +
    
  31.     paddingLeft +
    
  32.     '  "preview_short": ' +
    
  33.     dehydratedValue[meta.preview_short] +
    
  34.     ',\n' +
    
  35.     paddingLeft +
    
  36.     '  "preview_long": ' +
    
  37.     dehydratedValue[meta.preview_long] +
    
  38.     ',\n' +
    
  39.     paddingLeft +
    
  40.     '}'
    
  41.   );
    
  42. }