Grunt configuration for on-change compilation and execution TypeScript files.

tsc-gruntfile.js

module.exports = function(grunt) {

        grunt.initConfig({
                pkg: grunt.file.readJSON(
                        'package.json'),
                watcher: {
                        options: {
                                dateFormat: function(
                                        time) {
                                        grunt.log
                                                .writeln(
                                                        `Finished in ${time} ms. Watching...`
                                                        .yellow
                                                        .bold
                                                );
                                },
                        },
                        scripts: {
                                files: ['**/*.ts',
                                        '!/node_modules/**'
                                ],
                                tasks: ['exec'],
                                options: {
                                        spawn: false,
                                        interrupt: true
                                }
                        }
                },
                exec: {
                        tsc: {
                                command: []
                        }
                }
        });


        grunt.loadNpmTasks('grunt-watcher');
        grunt.loadNpmTasks('grunt-exec');

        grunt.event.on('chokidar', function(action, filepath) {
                grunt.config('exec.tsc.command',
                        'ts-node ' + filepath);
        });

        grunt.registerTask('default', ['watcher']);
};