.composer-require-checker.json

{
  "symbol-whitelist" : [
    "null", "true", "false",
    "static", "self", "parent",
    "array", "string", "int", "float", "bool", "iterable", "callable", "void", "object"
  ],
  "php-core-extensions" : [
    "standard"
  ],
  "scan-files" : [
    "./src/*.php"
  ]
}