/// // @strictNullChecks: true ////function foo(fn: () => boolean) { //// fn/**/ ? console.log('test') : undefined; ////} verify.codeFixAvailable([ { description: ts.Diagnostics.Add_missing_call_parentheses.message } ]); verify.codeFix({ description: ts.Diagnostics.Add_missing_call_parentheses.message, index: 0, newFileContent: `function foo(fn: () => boolean) { fn() ? console.log('test') : undefined; }`, });