message: Small adjustments for optional type
diff: @@ -41,7 +41,7 @@ export interface FullJestConfig {
  coveragePathIgnorePatterns: string[];
  cwd: Path;
  detectLeaks: boolean;
  - displayName: string;
  + displayName: string | null;
  forceCoverageMatch: Glob[];
  globals: ConfigGlobals;
  haste: HasteConfig;
  @@ -60,7 +60,7 @@ export interface FullJestConfig {
  roots: Path[];
  runner: string;
  setupFiles: Path[];
  - setupTestFrameworkScriptFile: Path;
  + setupTestFrameworkScriptFile: Path | null;
  skipNodeResolution: boolean;
  snapshotSerializers: Path[];
  testEnvironment: string;
  