message: Whitelist the `runner` option in valid_config.
diff: @@ -69,6 +69,7 @@ module.exports = ({
  resolver: '<rootDir>/resolver.js',
  rootDir: '/',
  roots: ['<rootDir>'],
  + runner: 'jest-runner',
  setupFiles: ['<rootDir>/setup.js'],
  setupTestFrameworkScriptFile: '<rootDir>/test_setup_file.js',
  silent: true,
  