grunt-typescript

Compile TypeScript

Documentation

You'll need to install grunt-typescript first:

npm install grunt-typescript

Then modify your grunt.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
          base_path: 'path/to/typescript/files',
          sourcemap: true,
          fullSourceMapPath: 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
        }
      }
    },
    ...
});

※I'm sorry for poor English