feat(tsconfig) support the latest module system keys

closes #643
closes #692
refs microsoft/TypeScript#5110

Author: basarat

dist/main/tsconfig/tsconfig.js

@@ -19,7 +19,7 @@ var compilerOptionsValidation = {
     locals: { type: types.string },
     listFiles: { type: types.boolean },
     mapRoot: { type: types.string },
-    module: { type: types.string, validValues: ['commonjs', 'amd', 'system', 'umd'] },
+    module: { type: types.string, validValues: ['commonjs', 'amd', 'system', 'umd', 'es6', 'es2015'] },
     moduleResolution: { type: types.string, validValues: ['classic', 'node'] },
     newLine: { type: types.string },
     noEmit: { type: types.boolean },
@@ -99,8 +99,10 @@ var typescriptEnumMap = {
         'none': ts.ModuleKind.None,
         'commonjs': ts.ModuleKind.CommonJS,
         'amd': ts.ModuleKind.AMD,
-        'system': ts.ModuleKind.System,
         'umd': ts.ModuleKind.UMD,
+        'system': ts.ModuleKind.System,
+        'es6': ts.ModuleKind.ES6,
+        'es2015': ts.ModuleKind.ES2015,
     },
     moduleResolution: {
         'node': ts.ModuleResolutionKind.NodeJs,

lib/main/tsconfig/tsconfig.ts

@@ -78,7 +78,7 @@ var compilerOptionsValidation: simpleValidator.ValidationInfo = {
     locals: { type: types.string },
     listFiles: { type: types.boolean },
     mapRoot: { type: types.string },
-    module: { type: types.string, validValues: ['commonjs', 'amd', 'system', 'umd'] },
+    module: { type: types.string, validValues: ['commonjs', 'amd', 'system', 'umd', 'es6', 'es2015'] },
     moduleResolution: { type: types.string, validValues: ['classic', 'node'] },
     newLine: { type: types.string },
     noEmit: { type: types.boolean },
@@ -245,8 +245,10 @@ var typescriptEnumMap = {
         'none': ts.ModuleKind.None,
         'commonjs': ts.ModuleKind.CommonJS,
         'amd': ts.ModuleKind.AMD,
-        'system': ts.ModuleKind.System,
         'umd': ts.ModuleKind.UMD,
+        'system': ts.ModuleKind.System,
+        'es6': ts.ModuleKind.ES6,
+        'es2015': ts.ModuleKind.ES2015,
     },
     moduleResolution: {
         'node': ts.ModuleResolutionKind.NodeJs,