grunt-typescript

compile typescript to javascript

grunt-typescript

Compile TypeScript in Grunt

Release Note

BasePath option has been deprecated. Method for determining an output directory has been changed in the same way as the TSC. Please re-set output directory with the new rootDir option or use keepDirectoryHierachy option.However, keepDirectoryHierachy option would not be available long.

You'll need to install grunt-typescript first:

npm install grunt-typescript --save-dev

or add the following line to devDependencies in your package.json

"grunt-typescript": "",

Then modify your Gruntfile.js file by adding the following line:

grunt.loadNpmTasks('grunt-typescript');

Then add some configuration for the plugin like so:

grunt.initConfig({
  ...
  typescript: {
    base: {
      src: ['path/to/typescript/files/**/*.ts'],
      dest: 'where/you/want/your/js/files',
      options: {
        module: 'amd', //or commonjs 
        target: 'es5', //or es3 
        basePath: 'path/to/typescript/files',
        sourceMap: true,
        declaration: true
      }
    }
  },
  ...
});

If you want to create a js file that is a concatenation of all the ts file (like -out option from tsc), you should specify the name of the file with the '.js' extension to dest option.

grunt.initConfig({
  ...
  typescript: {
    base: {
      src: ['path/to/typescript/files/**/*.ts'],
      dest: 'where/you/want/your/js/file.js',
      options: {
        module: 'amd', //or commonjs 
      }
    }
  },
  ...
});
name type description
noLib boolean Do not include a default lib.d.ts with global declarations
target string Specify ECMAScript target version: 'ES3' (default), 'ES5', or 'ES6'
module string Specify module code generation: "commonjs" (default), "amd", "system" or "umd"
sourceMap boolean Generates corresponding .map files
declaration boolean Generates corresponding .d.ts file
removeComments boolean Do not emit comments to output.
noImplicitAny boolean Warn on expressions and declarations with an implied 'any' type.
noResolve boolean Skip resolution and preprocessing.
preserveConstEnums boolean Do not erase const enum declarations in generated code.
noEmitOnError boolean Do not emit outputs if any type checking errors were reported.The default for this option is set to true for backwards compatibility.
suppressImplicitAnyIndexErrors boolean Suppress noImplicitAny errors for indexing objects lacking index signatures.
experimentalDecorators boolean
emitDecoratorMetadata boolean
newLine string
inlineSourceMap boolean
inlineSources boolean
noEmitHelpers boolean

type: string | boolean

generateTsConfig option will generate the content and equivalent tsconfig.json that are specified in the option. The value specify the directory name to be output. It is output to the current directory when you specify true.

type: string | string[]

Set auto reference libraries.

grunt.initConfig({
  ...
  typescript: {
    base: {
      src: ['path/to/typescript/files/**/*.ts'],
      options: {
        references: [
          "core",       //lib.core.d.ts 
          "dom",        //lib.dom.d.ts 
          "scriptHost", //lib.scriptHost.d.ts 
          "webworker",  //lib.webworker.d.ts 
          "path/to/reference/files/**/*.d.ts"
        ]
      }
    }
  },
  ...
});

type: string | boolean | { path?:<string | string[]``>; before?: <string|string[]>; after?: <`string` | `string[]>; atBegin: boolean }

Watch .ts files. It runs very quickly the second time since the compilation. It is because you only want to read and output file is limited.

Specify the directory where you want to monitor in the options.

grunt.initConfig({
  ...
  typescript: {
    base: {
      src: ['path/to/typescript/files/**/*.ts'],
      options: {
        watch: 'path/to/typescript/files' //or ['path/to/typescript/files1', 'path/to/typescript/files2'] 
      }
    }
  },
  ...
});

If you specify the true, then automatically detects the directory.

grunt.initConfig({
  ...
  typescript: {
    base: {
      src: ['path/to/typescript/files/**/*.ts'],
      options: {
        watch: true //Detect all target files root. eg: 'path/to/typescript/files/' 
      }
    }
  },
  ...
});

For expansion of the future, You can also be specified 'object'.

grunt.initConfig({
  ...
  typescript: {
    base: {
      src: ['path/to/typescript/files/**/*.ts'],
      options: {
        watch: {
          path: 'path/to/typescript/files', //or ['path/to/typescript/files1', 'path/to/typescript/files2'] 
          before: ['beforetasks'],   //Set before tasks. eg: clean task 
          after: ['aftertasks']      //Set after tasks.  eg: minify task 
          atBegin: true              //Run tasks when watcher starts. default false 
        }
      }
    }
  },
  ...
});

type: string

Path component to cut off when mapping the source files to dest files.

type: boolean

Path component to cut off when mapping the source files to dest files.

grunt.initConfig({
  ...
  typescript: {
    base: {
      src: ['path/to/typescript/files/**/*.ts'],
      dest: 'bin'
      options: {
        keepDirectoryHierarchy: true
      }
    }
  },
  ...
});

If keepDirectoryHierarchy option is true, it is output as follows.

/bin
- /path
--- /to
----- /typescript
------- /files
--------- *.ts 

If keepDirectoryHierarchy option is false or not set, it is output as follows. It is same way as the tsc.

/bin
- *.ts 

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