jest-styled-component does not work with styled-component >= 6.3.7

[jdeniau]

The changes made in https://styled-components.com/releases#styled-components@6.3.7 did broke jest-styled-component in the snapshot testing:

Investigating a little the getHashes utils, the sheet.names variable does contains:

In 6.3.7

Map(0) {}
{
  classNames: [],
  unreferencedClassNames: [
    'sc-gKHVrS',
    'sc-iBAcGF',
    'sc-ftLLXA',
    'sc-pqjAU',
    'sc-jrkPvZ',
    'sc-kDnyiK'
  ],
  classNamesToReplace: [],
  hashes: []
}
Map(0) {}
{
  classNames: [],
  unreferencedClassNames: [],
  classNamesToReplace: [],
  hashes: []
}

In 6.3.6

Map(6) {
  'sc-gKPRtf' => Set(1) { 'ketrjQ' },
  'sc-iBYQkw' => Set(1) { 'clATHb' },
  'sc-ftTHYN' => Set(1) { 'fGzkDn' },
  'sc-pyfCh' => Set(1) { 'iVgVzg' },
  'sc-jrcTuM' => Set(1) { 'djTRpi' },
  'sc-kDvujX' => Set(1) { 'yPbZT' }
}
{
  classNames: [
    'sc-gKPRtf', 'ketrjQ',
    'sc-iBYQkw', 'clATHb',
    'sc-ftTHYN', 'fGzkDn',
    'sc-pyfCh',  'iVgVzg',
    'sc-jrcTuM', 'djTRpi',
    'sc-kDvujX', 'yPbZT'
  ],
  unreferencedClassNames: [],
  classNamesToReplace: [
    'sc-gKPRtf', 'ketrjQ',
    'sc-iBYQkw', 'clATHb',
    'sc-ftTHYN', 'fGzkDn',
    'sc-pyfCh',  'iVgVzg',
    'sc-jrcTuM', 'djTRpi',
    'sc-kDvujX', 'yPbZT'
  ],
  hashes: [
    'sc-gKPRtf', 'ketrjQ',
    'sc-iBYQkw', 'clATHb',
    'sc-ftTHYN', 'fGzkDn',
    'sc-pyfCh',  'iVgVzg',
    'sc-jrcTuM', 'djTRpi',
    'sc-kDvujX', 'yPbZT'
  ]
}
Map(6) {
  'sc-gKPRtf' => Set(1) { 'ketrjQ' },
  'sc-iBYQkw' => Set(1) { 'clATHb' },
  'sc-ftTHYN' => Set(1) { 'fGzkDn' },
  'sc-pyfCh' => Set(1) { 'iVgVzg' },
  'sc-jrcTuM' => Set(1) { 'djTRpi' },
  'sc-kDvujX' => Set(1) { 'yPbZT' }
}
{
  classNames: [],
  unreferencedClassNames: [],
  classNamesToReplace: [],
  hashes: [
    'sc-gKPRtf', 'ketrjQ',
    'sc-iBYQkw', 'clATHb',
    'sc-ftTHYN', 'fGzkDn',
    'sc-pyfCh',  'iVgVzg',
    'sc-jrcTuM', 'djTRpi',
    'sc-kDvujX', 'yPbZT'
  ]
}