Transpile to ES6

Add support for ES6 transpilation. Change dependency injection in order to match the `class` and `constructor` keywords.
Update istanbul to latest version as its previous versions do not support ES6.

Remove bluebird.d.ts as it conflicts with Promises from TypeScript's ES6 d.ts.
Remove bluebird as dependency - we will use native Promises from now on.

Add support for Node.js 4 and 5 - both versions have limited support for ES6 features, so in order to support them we have to:
 - pass --harmony flag to Node.js
 - do not use some features like default values of method arguments.
 - do not use spread operator - it's implementation in Node.js 4 is limited only to arrays. Even this implementation has issues. So use `.apply` instead of using spread operator. Remove all other usages of spread operator (for objects).

Add tests scripts for istanbul and mocha, as they both will need the `--harmony` flag as well, so we cannot execute them directly with Node.js 4 and 5. Instead we'll execute a custom script, that will start a new node process.

Author: rosen-vladimirov

.gitignore

@@ -34,3 +34,4 @@ node_modules
 coverage/**/*
 xunit.xml
 test-reports.xml
+!test-scripts/**

Gruntfile.js

@@ -36,16 +36,7 @@ module.exports = function(grunt) {
 		pkg: grunt.file.readJSON("package.json"),
 
 		ts: {
-			options: {
-				target: 'es5',
-				module: 'commonjs',
-				sourceMap: true,
-				declaration: false,
-				removeComments: false,
-				noImplicitAny: true,
-				experimentalDecorators: true,
-				emitDecoratorMetadata: true
-			},
+			options: grunt.file.readJSON("tsconfig.json").compilerOptions,
 
 			devlib: {
 				src: ["**/*.ts", "!node_modules/**/*.ts"],
@@ -124,7 +115,7 @@ module.exports = function(grunt) {
 		},
 
 		clean: {
-			src: ["test/**/*.js*", "**/*.js*", "!**/*.json", "!Gruntfile.js", "!node_modules/**/*", "!bin/common-lib.js",  "!vendor/*.js", "*.tgz"]
+			src: ["test/**/*.js*", "**/*.js*", "!**/*.json", "!Gruntfile.js", "!node_modules/**/*", "!bin/common-lib.js",  "!vendor/*.js", "*.tgz", "!test-scripts/**/*"]
 		}
 	});
 

appbuilder/services/npm-service.ts

@@ -118,8 +118,9 @@ export class NpmService implements INpmService {
 		}).future<void>()();
 	}
 
-	public search(projectDir: string, keywords: string[], args: string[] = []): IFuture<IBasicPluginInformation[]> {
+	public search(projectDir: string, keywords: string[], args?: string[]): IFuture<IBasicPluginInformation[]> {
 		return ((): IBasicPluginInformation[] => {
+			args = args === undefined ? [] : args;
 			let result: IBasicPluginInformation[] = [];
 			let commandArguments = _.concat(["search"], args, keywords);
 			let spawnResult = this.executeNpmCommandCore(projectDir, commandArguments).wait();
@@ -296,7 +297,7 @@ export class NpmService implements INpmService {
 						let defs = _.map(definitionFiles, def => this.getReferenceLine(fromWindowsRelativePathToUnix(path.relative(projectDir, def))));
 
 						this.$logger.trace(`Adding lines for definition files: ${definitionFiles.join(", ")}`);
-						lines.push(...defs);
+						lines = lines.concat(defs);
 					}
 				});
 
@@ -320,7 +321,8 @@ export class NpmService implements INpmService {
 		return `/// <reference path="${pathToReferencedFile}" />`;
 	}
 
-	private getNpmArguments(command: string, npmArguments: string[] = []): string[] {
+	private getNpmArguments(command: string, npmArguments?: string[]): string[] {
+		npmArguments = npmArguments === undefined ? [] : npmArguments;
 		return npmArguments.concat([command]);
 	}
 

codeGeneration/code-printer.ts

@@ -7,7 +7,8 @@ export class CodePrinter {
 	private static START_BLOCK_CHAR = "{";
 	private static END_BLOCK_CHAR = "}";
 
-	public composeBlock(block: CodeGeneration.IBlock, indentSize: number = 0): string {
+	public composeBlock(block: CodeGeneration.IBlock, indentSize?: number): string {
+		indentSize = indentSize === undefined ? 0 : indentSize;
 		let content = this.getIndentation(indentSize);
 
 		if(block.opener) {

decorators.ts

@@ -1,4 +1,3 @@
-import * as Promise from "bluebird";
 import * as fiberBootstrap from "./fiber-bootstrap";
 import * as assert from "assert";
 import {isFuture} from "./helpers";
@@ -47,6 +46,18 @@ export function exportedPromise(moduleName: string, postAction?: () => void): an
 }
 
 function getPromise(originalValue: any, config?: { postActionMethod: () => void, shouldExecutePostAction?: boolean }): Promise<any> {
+	let postAction = (data: any) => {
+		if (config && config.postActionMethod && config.shouldExecutePostAction) {
+			config.postActionMethod();
+		}
+
+		if (data instanceof Error) {
+			throw data;
+		}
+
+		return data;
+	};
+
 	return new Promise((onFulfilled: Function, onRejected: Function) => {
 		if (isFuture(originalValue)) {
 			fiberBootstrap.run(function () {
@@ -60,11 +71,7 @@ function getPromise(originalValue: any, config?: { postActionMethod: () => void,
 		} else {
 			onFulfilled(originalValue);
 		}
-	}).lastly(() => {
-		if (config && config.postActionMethod && config.shouldExecutePostAction) {
-			config.postActionMethod();
-		}
-	});
+	}).then(postAction, postAction);
 }
 
 export function exported(moduleName: string): any {