grunt-typescript

Compile TypeScript in Grunt

Important!

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.

Documentation

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
      }
    }
  },
  ...
});

Options

typescript options

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	Do not generate custom helper functions like __extends in compiled output.
jsx	string	Support JSX in '.tsx' files: 'React' or 'Preserve'.
experimentalAsyncFunctions	boolean	Support ES7-proposed asynchronous functions using the async/await keywords.
rootDir	string	Specifies the root directory of input files. Only use to control the output directory structure with outDir option.

original options

####generateTsConfig 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.

references

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"
        ]
      }
    }
  },
  ...
});

watch

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
        }
      }
    }
  },
  ...
});

basePath(obsolete)

type: string

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

keepDirectoryHierarchy(obsolete)

type: boolean