Merge pull request #28612 from vvakame/feat-showConfig-error

show diagnostic when error occurred with --showConfig

Author: DanielRosenwasser

src/tsc/tsc.ts

@@ -133,6 +133,11 @@ namespace ts {
         if (configFileName) {
             const configParseResult = parseConfigFileWithSystem(configFileName, commandLineOptions, sys, reportDiagnostic)!; // TODO: GH#18217
             if (commandLineOptions.showConfig) {
+                if (configParseResult.errors.length !== 0) {
+                    updateReportDiagnostic(configParseResult.options);
+                    configParseResult.errors.forEach(reportDiagnostic);
+                    return sys.exit(ExitStatus.DiagnosticsPresent_OutputsSkipped);
+                }
                 // tslint:disable-next-line:no-null-keyword
                 sys.write(JSON.stringify(convertToTSConfig(configParseResult, configFileName, sys), null, 4) + sys.newLine);
                 return sys.exit(ExitStatus.Success);