[DRAFT] TypeScript Vorpal

gulpfile.babel.js

@@ -1,23 +1,32 @@
-const gulp = require('gulp');
-const _gulp = require('load-plugins')('gulp-*');
+const gulp = require('gulp')
+const _gulp = require('load-plugins')('gulp-*')
+var ts = require('gulp-typescript')
+var tsProject = ts.createProject('tsconfig.json');
 
-const paths = {};
-paths.src = './lib/**/*.js';
-paths.dist = './dist';
+const paths = {}
+paths.src = './lib/**/*.js'
+paths.dist = './dist'
 
 gulp.task('lint', () => {
-  return gulp.src(paths.src)
-    .pipe(_gulp.xo());
-});
+    return gulp.src(paths.src)
+        .pipe(_gulp.xo())
+})
 
-gulp.task('build', () => {
-  return gulp.src(paths.src)
-    .pipe(_gulp.babel())
-    .pipe(gulp.dest(paths.dist));
-});
+gulp.task('build', ['build:ts', 'build:babel'])
+
+gulp.task('build:ts', () => {
+    return tsProject.src().pipe(tsProject()).js
+        .pipe(gulp.dest(paths.dist))
+})
+
+gulp.task('build:babel', () => {
+    return gulp.src(paths.dist)
+        .pipe(_gulp.babel())
+        .pipe(gulp.dest(paths.dist))
+})
 
 gulp.task('watch', ['build'], () => {
-  gulp.watch(paths.src, ['build']);
-});
+    gulp.watch(paths.src, ['build'])
+})
 
-gulp.task('default', ['watch']);
+gulp.task('default', ['watch'])

lib/command.js → lib/command.ts

@@ -21,6 +21,12 @@ var command = Command.prototype;
 
 module.exports = exports = Command;
 
+export interface Arg {
+    required: boolean
+    name: string
+    variadic: boolean
+}
+
 /**
  * Initialize a new `Command` instance.
  *
@@ -36,7 +42,7 @@ function Command(name, parent) {
   }
   this.commands = [];
   this.options = [];
-  this._args = [];
+  this._args = [] as Arg[];
   this._aliases = [];
   this._name = name;
   this._relay = false;
@@ -528,7 +534,7 @@ command._parseExpectedArgs = function (args) {
   if (!args.length) {
     return;
   }
-  var self = this;
+    var self = this;
   args.forEach(function (arg) {
     var argDetails = {
       required: false,