Function getTextOfDiagnostic

packages/language-service/test/diagnostic_spec.ts:806–811

(diag: ts.Diagnostic)

});

function getTextOfDiagnostic(diag: ts.Diagnostic): string {
  expect(diag.file).not.toBeUndefined();
  expect(diag.start).not.toBeUndefined();
  expect(diag.length).not.toBeUndefined();
  return diag.file!.text.substring(diag.start!, diag.start! + diag.length!);
}