C# send error messages to a file with TypeScript transpiler

[wally96334]

Hi all,

I am trying to run the TypeScript transpiler in a separate process
on some code that is loaded from a file on the client side,
sending the error messages to a file.

// THIS ProcessStartInfo set threw the Win32Exception listed below.

//psi = new ProcessStartInfo
// ("tsc", " --project C:\\a01_temp\\tsconfig.json");

// System.ComponentModel.Win32Exception
// HResult=0x80004005
// Message=The system cannot find the file specified
// Source=System
// StackTrace:
// at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
// at NS_TypeScript.TypeScriptCompiler.Compile(String P_tsPath, CLS_Options P_options)
// in K:\Software Development\CLS_TypeScript_01.cs:line 235
// at NS_TypeScript.Program.Main(String[] args)
// in K:\Software Development\CLS_TypeScript_01.cs:line 48

I then tried writing the command to a batch file, then running the batch file
in a separate process. The transpiler did execute, but I cannot get error messages
into a file. If I run the generated batch file from a command window, it does indeed
write the error messages to a file.


L_cmd = "tsc" + $" --project C:/a01_temp/tsconfig.json > cmpl_diag_02.txt 2>&1";

// Creating the batch file.
L_bat_TS_file_spec = Path.Combine (L_file_path, "test.bat");
using (StreamWriter
L_SW = new StreamWriter (L_bat_TS_file_spec))
{
L_SW.Write (L_cmd);
}
psi = new ProcessStartInfo (L_bat_TS_file_spec);


The tsconfig.json is listed at the bottom. If there is an attribute that
would specify a file to which the error messages are to be written,
then that might fix my problem. I do not see anything in the documentation
that would indicate that there is any such attribute.


Here is my code, with comments as to what I tried, and what happened.

-------------------------------------------------------------------------
[CODE title="TypeScript server setup"]

static class TypeScriptCompiler
{
static string L_file_path;
static string L_TS_file_spec;
static string L_bat_TS_file_spec;
static string L_JS_file_spec;
static string L_tsc_file_spec;

public static void Compile(string P_tsPath, CLS_Options P_options = null)
{
L_file_path = @"C:\a01_temp";
L_TS_file_spec = Path.Combine (L_file_path, "test.ts");
L_JS_file_spec = Path.Combine (L_file_path, "test.js");
L_tsc_file_spec
= "C:\\Users\\Ron Smith\\AppData\\Roaming\\npm\\node_modules\\typescript\\bin\\tsc";

string L_cmd;

Process L_tsc_process = new Process();
ProcessStartInfo psi;

// THIS ProcessStartInfo set threw the Win32Exception listed below.

//psi = new ProcessStartInfo
// ("tsc", " --project C:\\a01_temp\\tsconfig.json");

// System.ComponentModel.Win32Exception
// HResult=0x80004005
// Message=The system cannot find the file specified
// Source=System
// StackTrace:
// at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
// at NS_TypeScript.TypeScriptCompiler.Compile(String P_tsPath, CLS_Options P_options)
// in K:\Software Development\CLS_TypeScript_01.cs:line 235
// at NS_TypeScript.Program.Main(String[] args)
// in K:\Software Development\CLS_TypeScript_01.cs:line 48

// I do not know why the process could not find "tsc" like it should have.
// If anyone could figure this out, it might solve my problem.

// NEXT APPROACH: Try writing the command to a batch file,
// then execute the batch file.

// The batch file DID execute properly,
// and the errors were displayed in the command box,
// but the output was not redirected when this was run from a separate process
// within .NET (C#).

// The error messages were indeed redirected to the given log file (cmpl_diag.txt)
// when the generated batch file was run directly from the command line.

// THIS is stuff that was tried before but did not work,
// including a pipe to another process that might handle the redirect.
//L_cmd = L_tsc_file_spec + $" --project C:/a01_temp/tsconfig.json";
//L_cmd = "cmd tsc" + $" --project C:/a01_temp/tsconfig.json";
//L_cmd = "tsc" + $" --project C:/a01_temp/tsconfig.json cmpl_diag.txt 2>&1";
//L_cmd = "tsc" + $" --project C:/a01_temp/tsconfig.json | more >cmpl_diag_02.txt";
//L_cmd = "tsc" + " --project C:\\a01_temp\\tsconfig.json | more >cmpl_diag_02.txt";
//L_cmd = "tsc" + " --project C:\\a01_temp\\tsconfig.json > cmpl_diag_02.txt 2>&1";

// THIS is the most-recent attempt.

L_cmd = "tsc" + $" --project C:/a01_temp/tsconfig.json > cmpl_diag_02.txt 2>&1";

// Creating the batch file.
L_bat_TS_file_spec = Path.Combine (L_file_path, "test.bat");
using (StreamWriter
L_SW = new StreamWriter (L_bat_TS_file_spec))
{
L_SW.Write (L_cmd);
}
psi = new ProcessStartInfo (L_bat_TS_file_spec);

// run without showing console windows
psi.CreateNoWindow = true;
psi.UseShellExecute = false;
psi.Verb = "runas";

// redirects the compiler error output, so we can read
// and display errors if any
psi.RedirectStandardOutput = true;
psi.RedirectStandardError = true;

L_tsc_process.StartInfo = psi;
L_tsc_process.Start();

// SHOULD read the error output
// ... but nothing was read.
var msg = L_tsc_process.StandardError.ReadToEnd();

// make sure it finished executing before proceeding
L_tsc_process.WaitForExit();

// TRIED moving this down below the "WaitForExit"
// ... but still nothing was read.
//var msg = L_tsc_process.StandardError.ReadToEnd();
}
}
[/CODE]

-----------------------------------------------------------

C:\\a01_temp\\tsconfig.json

[CODE title="tsconfig.json"]
{
"compilerOptions": {
"sourceMap": true,
"noImplicitAny": true,
"module": "commonjs",
"target": "es5",
"allowJs": true,
"removeComments": false,
"typeRoots": [
"C:\\TypeScript\\a16_bin\\node_modules\\@types"
]
},
"include": [
"C:\\a01_temp\\test.ts"
]
}
[/CODE]


THANKS!

 

[wally96334]

PROBLEM SOLVED!

I specified the absolute file path for the output file using the batch file approach.

Thanks for reading.