switch to gulp for build process

Gulpfile.js

@@ -0,0 +1,25 @@
+var cached = require("gulp-cached");
+var rename = require("gulp-rename");
+var babel  = require("gulp-babel");
+var watch  = require("gulp-watch");
+var gulp   = require("gulp");
+
+var scripts = "./packages/*/src/**/*.js";
+
+gulp.task("default", ["build"]);
+
+gulp.task("build", function () {
+  return gulp.src(scripts)
+    .pipe(cached("babel"))
+    .pipe(babel())
+    .pipe(rename(function (path) {
+      path.dirname = path.dirname.replace(/^([^\\]+)\/src/, "$1/lib");
+    }))
+    .pipe(gulp.dest("packages"));
+});
+
+gulp.task("watch", ["build"], function (callback) {
+  watch(scripts, function () {
+    gulp.start("build");
+  });
+});

Makefile

@@ -5,7 +5,7 @@ export NODE_ENV = test
 .PHONY: clean test test-cov test-clean test-travis test-browser publish build bootstrap publish-core publish-runtime build-website build-core watch-core build-core-test clean-core prepublish
 
 build: clean
-	./scripts/build.sh
+	gulp build
 
 build-dist: build
 	cd packages/babel-browser; \
@@ -16,7 +16,7 @@ build-dist: build
 	node scripts/build-dist.js
 
 watch: clean
-	scripts/build.sh --watch
+	gulp watch
 
 lint:
 	node node_modules/.bin/eslint packages/*/src
@@ -35,7 +35,7 @@ test: lint
 
 test-cov: clean
 	BABEL_ENV=test; \
-	make build
+	gulp build
 	./scripts/test-cov.sh
 
 test-travis: bootstrap lint build test

package.json

@@ -13,6 +13,11 @@
     "es5-shim": "^4.1.7",
     "eslint": "^1.1.0",
     "fs-readdir-recursive": "^0.1.2",
+    "gulp": "^3.9.0",
+    "gulp-babel": "^5.3.0",
+    "gulp-cached": "^1.1.0",
+    "gulp-rename": "^1.2.2",
+    "gulp-watch": "^4.3.5",
     "istanbul": "^0.3.5",
     "lodash": "^3.10.0",
     "matcha": "^0.6.0",

scripts/build.sh

@@ -1,10 +0,0 @@
-#!/bin/sh
-set -e
-
-for f in packages/*; do
-  if [ -d "$f/src" ]; then
-    node node_modules/babel/bin/babel "$f/src" --out-dir "$f/lib" --copy-files $1 &
-  fi
-done
-
-wait