{
  "symbol-whitelist" : [
    "null", "true", "false",
    "static", "self", "parent",
    "array", "string", "int", "float", "bool", "iterable", "callable", "void", "object", "mixed", "never"
  ],
  "php-core-extensions" : [
    "Core",
    "date",
    "pcre",
    "Phar",
    "Reflection",
    "SPL",
    "standard"
  ],
  "scan-files" : []
}

{
  "symbol-whitelist" : [
    "null", "true", "false",
    "static", "self", "parent",
    "array", "string", "int", "float", "bool", "iterable", "callable", "void", "object", "mixed", "never",
    "Symfony\\Bundle\\DebugBundle\\DebugBundle",
    "Symfony\\Bundle\\WebProfilerBundle\\WebProfilerBundle",
    "Symfony\\Bundle\\WebServerBundle\\WebServerBundle",
    "Doctrine\\Bundle\\DoctrineCacheBundle\\DoctrineCacheBundle",
    "Doctrine\\Bundle\\FixturesBundle\\DoctrineFixturesBundle",
    "Sonata\\CoreBundle\\SonataCoreBundle",
    "Sonata\\IntlBundle\\SonataIntlBundle",
    "PSS\\SymfonyMockerContainer\\DependencyInjection\\MockerContainer"
  ],
  "php-core-extensions" : [
    "Core",
    "date",
    "pcre",
    "Phar",
    "Reflection",
    "SPL",
    "standard"
  ],
  "scan-files" : []
}

Whitelist symbols used by old Kernel in ComposerRequireChecker config
Whitelist symbols used by old Kernel in ComposerRequireChecker config
