Port version printing from strada (#634)

Author: haoqixu

internal/execute/outputs.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/microsoft/typescript-go/internal/ast"
 	"github.com/microsoft/typescript-go/internal/compiler"
+	"github.com/microsoft/typescript-go/internal/compiler/diagnostics"
 	"github.com/microsoft/typescript-go/internal/core"
 	"github.com/microsoft/typescript-go/internal/diagnosticwriter"
 	"github.com/microsoft/typescript-go/internal/tspath"
@@ -79,3 +80,8 @@ type statistic struct {
 func newStatistic(name string, count int) statistic {
 	return statistic{name, count}
 }
+
+func printVersion(sys System) {
+	fmt.Fprint(sys.Writer(), diagnostics.Version_0.Format(core.Version)+sys.NewLine())
+	sys.EndWrite()
+}

internal/execute/tsc.go

@@ -35,13 +35,17 @@ func executeCommandLineWorker(sys System, cb cbType, commandLine *tsoptions.Pars
 	}
 
 	if commandLine.CompilerOptions().Init.IsTrue() ||
-		commandLine.CompilerOptions().Version.IsTrue() ||
 		// commandLine.CompilerOptions().Help != nil ||
 		// commandLine.CompilerOptions().All != nil ||
 		commandLine.CompilerOptions().Watch.IsTrue() && commandLine.CompilerOptions().ListFilesOnly.IsTrue() {
 		return ExitStatusNotImplemented, nil
 	}
 
+	if commandLine.CompilerOptions().Version.IsTrue() {
+		printVersion(sys)
+		return ExitStatusSuccess, nil
+	}
+
 	if commandLine.CompilerOptions().Project != "" {
 		if len(commandLine.FileNames()) != 0 {
 			reportDiagnostic(ast.NewCompilerDiagnostic(diagnostics.Option_project_cannot_be_mixed_with_source_files_on_a_command_line))
@@ -71,7 +75,7 @@ func executeCommandLineWorker(sys System, cb cbType, commandLine *tsoptions.Pars
 		if commandLine.CompilerOptions().ShowConfig.IsTrue() {
 			reportDiagnostic(ast.NewCompilerDiagnostic(diagnostics.Cannot_find_a_tsconfig_json_file_at_the_current_directory_Colon_0, tspath.NormalizePath(sys.GetCurrentDirectory())))
 		} else {
-			// print version
+			printVersion(sys)
 			// print help
 		}
 		return ExitStatusDiagnosticsPresent_OutputsSkipped, nil

testdata/baselines/reference/tsc/commandLine/Parse-watch-interval-option.js

@@ -152,5 +152,5 @@ ParsedCommandLine::{
     "compileOnSave": null
 }
 Output::
-No output
+Version 7.0.0-dev
 

testdata/baselines/reference/tsc/commandLine/does-not-add-color-when-NO_COLOR-is-set.js

@@ -149,5 +149,5 @@ ParsedCommandLine::{
     "compileOnSave": null
 }
 Output::
-No output
+Version 7.0.0-dev
 

testdata/baselines/reference/tsc/commandLine/help-all.js

@@ -152,5 +152,5 @@ ParsedCommandLine::{
     "compileOnSave": null
 }
 Output::
-No output
+Version 7.0.0-dev
 

testdata/baselines/reference/tsc/commandLine/help.js

@@ -151,5 +151,5 @@ ParsedCommandLine::{
     "compileOnSave": null
 }
 Output::
-No output
+Version 7.0.0-dev
 

testdata/baselines/reference/tsc/commandLine/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped-when-host-cannot-provide-terminal-width.js

@@ -149,5 +149,5 @@ ParsedCommandLine::{
     "compileOnSave": null
 }
 Output::
-No output
+Version 7.0.0-dev
 

testdata/baselines/reference/tsc/commandLine/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js

@@ -149,5 +149,5 @@ ParsedCommandLine::{
     "compileOnSave": null
 }
 Output::
-No output
+Version 7.0.0-dev