message: chore(devs-infra): remove ! on realpath of LanguageService
diff: @@ -135,7 +135,7 @@ export const initializeLanguageServiceInstance = (configs: ConfigSet, logger: Lo
  readDirectory: memoize(ts.sys.readDirectory),
  getDirectories: memoize(ts.sys.getDirectories),
  directoryExists: memoize(ts.sys.directoryExists),
  - realpath: memoize(ts.sys.realpath!), // eslint-disable-line @typescript-eslint/no-non-null-assertion
  + realpath: ts.sys.realpath && memoize(ts.sys.realpath),
  getNewLine: () => LINE_FEED,
  getCurrentDirectory: () => cwd,
  getCompilationSettings: () => options,
  