Running local 'tsc' from node #6387

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1. davidreher commented on Jan 7, 2016

   

   David Reher (davidreher)

   on Jan 7, 2016

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   What we are doing in our project is simply calling the tsc from node_modules/.bin folder or create an npm script (which implicitly works inside the node_modules/.bin folder) and call that
2. Mohamed Hegazy (mhegazy)

   added

   QuestionAn issue which isn't directly actionable in codeAn issue which isn't directly actionable in code

   on Jan 7, 2016
3. mhegazy commented on Jan 7, 2016

   

   Mohamed Hegazy (mhegazy)

   on Jan 7, 2016

   Contributor

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   you can use the typescript compiler api, just like you use uglify today. var ts = require("typescript");. here is more information on the API https://github.com/Microsoft/TypeScript/wiki/Using-the-Compiler-API
4. Mohamed Hegazy (mhegazy)

   closed this as completedon Jan 7, 2016
5. arfmann commented on Jan 7, 2016

   

   arfmann

   on Jan 7, 2016

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   Mohamed Hegazy (@mhegazy) - Thanks, but I'm strugging to see how to run this and have it act in the same way as the tsconfig.json-driven tsc tool. I'm hoping to just do the equivalent of giving it the '-p' argument - i.e. the directory with my tsconfig.json file, and then just have the compiler do it's thing. Is that possible?
6. mhegazy commented on Jan 7, 2016

   

   Mohamed Hegazy (mhegazy)

   on Jan 7, 2016

   Contributor

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   here you go:

   /// <reference path="typings/node/node.d.ts" />
   
   import * as ts from "typescript";
   import * as fs from "fs";
   import * as path from "path";
   
   function reportDiagnostics(diagnostics: ts.Diagnostic[]): void { 
       diagnostics.forEach(diagnostic => {
           let message = "Error";
           if (diagnostic.file) {
               let { line, character } = diagnostic.file.getLineAndCharacterOfPosition(diagnostic.start);
               message += ` ${diagnostic.file.fileName} (${line + 1},${character + 1})`;
           }
           message += ": " + ts.flattenDiagnosticMessageText(diagnostic.messageText, '\n');
           console.log(message);
       });
   }
   
   function readConfigFile(configFileName: string) { 
       // Read config file
       const configFileText = fs.readFileSync(configFileName).toString();  
   
       // Parse JSON, after removing comments. Just fancier JSON.parse
       const result = ts.parseConfigFileTextToJson(configFileName, configFileText);
       const configObject = result.config;
       if (!configObject) {
           reportDiagnostics([result.error]);
           process.exit(1);;
       }
   
       // Extract config infromation
       const configParseResult = ts.parseJsonConfigFileContent(configObject, ts.sys, path.dirname(configFileName));
       if (configParseResult.errors.length > 0) {
           reportDiagnostics(configParseResult.errors);
           process.exit(1);
       }
       return configParseResult;
   }
   
   
   function compile(configFileName: string): void {
       // Extract configuration from config file
       let config = readConfigFile(configFileName);
   
       // Compile
       let program = ts.createProgram(config.fileNames, config.options);
       let emitResult = program.emit();
   
       // Report errors
       reportDiagnostics(ts.getPreEmitDiagnostics(program).concat(emitResult.diagnostics));
   
       // Return code
       let exitCode = emitResult.emitSkipped ? 1 : 0;
       process.exit(exitCode);
   }
   
   compile(process.argv[2]);

   to run this:

   tsc compile.ts --m commonjs
   node compile.js c:\test\tsconfig.json

   👍React with 👍3Reacted by Bowen Ni, Oleksandr Poplavskyi and Kevin Ross
7. arfmann commented on Jan 7, 2016

   

   arfmann

   on Jan 7, 2016

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   This is incredibly useful! Thanks very much.

   I'm stuck using plain [node-friendly] JavaScript for this, so I've converted it in case anyone else happens to be in the same boat.

   "use strict";
   
   const ts = require("typescript");
   const fs = require("fs");
   const path = require("path");
   const process = require("process");
   
   function reportDiagnostics(diagnostics) { 
       diagnostics.forEach(diagnostic => {
           let message = "Error";
           if (diagnostic.file) {
               const where = diagnostic.file.getLineAndCharacterOfPosition(diagnostic.start);
               message += ' ' + diagnostic.file.fileName + ' ' + where.line + ', ' + where.character + 1;
           }
           message += ": " + ts.flattenDiagnosticMessageText(diagnostic.messageText, '\n');
           console.log(message);
       });
   }
   
   function readConfigFile(configFileName) { 
       // Read config file
       const configFileText = fs.readFileSync(configFileName).toString();  
   
       // Parse JSON, after removing comments. Just fancier JSON.parse
       const result = ts.parseConfigFileTextToJson(configFileName, configFileText);
       const configObject = result.config;
       if (!configObject) {
           reportDiagnostics([result.error]);
           process.exit(1);
       }
   
       // Extract config infromation
       const configParseResult = ts.parseJsonConfigFileContent(configObject, ts.sys, path.dirname(configFileName));
       if (configParseResult.errors.length > 0) {
           reportDiagnostics(configParseResult.errors);
           process.exit(1);
       }
       return configParseResult;
   }
   
   
   function compile(configFileName) {
       // Extract configuration from config file
       const config = readConfigFile(configFileName);
   
       // Compile
       const program = ts.createProgram(config.fileNames, config.options);
       const emitResult = program.emit();
   
       // Report errors
       reportDiagnostics(ts.getPreEmitDiagnostics(program).concat(emitResult.diagnostics));
   
       // Return code
       const exitCode = emitResult.emitSkipped ? 1 : 0;
       process.exit(exitCode);
   }
   
   compile('tsconfig.json');
8. leftyftw commented on Feb 10, 2017

   

   Jaime Torres (leftyftw)

   on Feb 10, 2017

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   arfmann Did you adapt this yourself for free use by others? I'd like to use it in a project, but have to ensure copyright compliance.
9. jamiewinder commented on Feb 10, 2017

   

   Jamie Winder (jamiewinder)

   on Feb 10, 2017

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   Jaime Torres (@leftyftw) - yes, it's a straight adaptation of what mhegazy posted, and I don't claim any rights to it. :)
10. microsoft

    locked and limited conversation to collaborators on Jun 19, 2018