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  • #3937958

    Specifying a file for error messages within TypeScript tsconfig.json

    by wally96334 ·

    I am running the TypeScript transpiler on some code. I want to trap any error messages that the transpiler might emit to a file specified within my tsconfig.json. I do not see an attribute within the specifications for doing that.

    Am I missing something?

    Thanks!

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    • #3939318

      Where do you see the error messages now?

      by rproffitt ·

      In reply to Specifying a file for error messages within TypeScript tsconfig.json

      I see there is a Command Line Interface (CLI) at https://www.typescriptlang.org/docs/handbook/compiler-options.html so I’d try the command line and see if the errors show on screen.

      After that we can use the old redirects from the CLI.

      https://helpdeskgeek.com/how-to/redirect-output-from-command-line-to-text-file/ is a refresher for both standard and error output.

      • #3939316

        They are displayed in the command window … depending …

        by wally96334 ·

        In reply to Where do you see the error messages now?

        Hi RProffitt,

        THANKS for the response.

        I know about the command line option with redirection.

        I was hoping that I wouldn’t have to go into the details of my problem,
        that there would be a simple config option that I could set that I am not aware of.

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

        ————————————————————————-

        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.

        CONT’D …

        • #3939315

          PART 2

          by wally96334 ·

          In reply to They are displayed in the command window … depending …

          // 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();

          CONT’D …

        • #3939314

          PART 3

          by wally96334 ·

          In reply to PART 2

          // TRIED moving this down below the “WaitForExit”
          // … but still nothing was read.
          //var msg = L_tsc_process.StandardError.ReadToEnd();
          }
          }

          ———————————————————–

          C:\\a01_temp\\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”
          ]
          }

          THANKS AGAIN!

        • #3939305

          PROBLEM SOLVED!

          by wally96334 ·

          In reply to PART 3

          PROBLEM SOLVED!

          Specifying the absolute file path on the output file using the generated batch file approach solved the problem.

          THANKS for reading.

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