Basic TypeScript Support

.gitignore

@@ -9,3 +9,4 @@ coverage
 dist
 lib
 !test/**/node_modules
+.vscode/

src/Parser.js

@@ -10,6 +10,8 @@ class Parser {
  this.registerExtension('js', './assets/JSAsset');
  this.registerExtension('jsx', './assets/JSAsset');
  this.registerExtension('es6', './assets/JSAsset');
+ this.registerExtension('ts', './assets/TypeScriptAsset');
+ this.registerExtension('tsx', './assets/TypeScriptAsset');
  this.registerExtension('json', './assets/JSONAsset');
  this.registerExtension('yaml', './assets/YAMLAsset');
  this.registerExtension('yml', './assets/YAMLAsset');
@@ -46,7 +48,6 @@ class Parser {
  if (typeof parser === 'string') {
  parser = this.extensions[extension] = require(parser);
  }
-
  return parser;
  }
 

src/assets/TypeScriptAsset.js

@@ -0,0 +1,23 @@
+const JSAsset = require('./JSAsset');
+const localRequire = require('../utils/localRequire');
+
+class TypeScriptAsset extends JSAsset {
+ async transform() {
+ this.ast = await this.parse(this.contents);
+ this.isAstDirty = true;
+ }
+
+ async parse(code) {
+ // require typescript, installed locally in the app
+ let typescript = localRequire('typescript', this.name);
+
+ let parserOptions = {
+ module: typescript.ModuleKind.CommonJS
+ }
+
+ // Transpile Module using TypeScript and parse result as ast format through babylon
+ return await super.parse(typescript.transpileModule(code, parserOptions).outputText);
+ }
+}
+
+module.exports = TypeScriptAsset;

src/builtins/prelude.js

@@ -28,7 +28,6 @@ require = (function (modules, cache, entry) {
  if (previousRequire) {
  return previousRequire(name, true);
  }
-
  var err = new Error('Cannot find module \'' + name + '\'');
  err.code = 'MODULE_NOT_FOUND';
  throw err;
@@ -58,7 +57,7 @@ require = (function (modules, cache, entry) {
  newRequire.modules = modules;
  newRequire.cache = cache;
  newRequire.parent = previousRequire;
-
+ 
  for (var i = 0; i < entry.length; i++) {
  newRequire(entry[i]);
  }