Use rollup for build

Author: btd

.gitignore

@@ -5,3 +5,5 @@ desktop.ini
 should.js.for-tests
 *.swp
 npm-debug.log
+cjs/
+es6/

as-function.js

@@ -1 +1 @@
-module.exports = require('./lib/should');
+module.exports = require('./cjs/should');

browser-entry.js

@@ -1 +1,12 @@
-should = require('./index');
+import should from './es6/should';
+
+var defaultProto = Object.prototype;
+var defaultProperty = 'should';
+
+//Expose api via `Object#should`.
+try {
+  var prevShould = should.extend(defaultProperty, defaultProto);
+  should._prevShould = prevShould;
+} catch (e) {
+  //ignore errors
+}

gulpfile.js

@@ -1,4 +1,4 @@
-var should = require('./lib/should');
+var should = require('./cjs/should');
 
 var defaultProto = Object.prototype;
 var defaultProperty = 'should';

index.js

@@ -9,25 +9,22 @@
   },
   "homepage": "https://github.com/shouldjs/should.js",
   "scripts": {
+    "cjs": "rollup --format=cjs --output=cjs/should.js lib/should.js",
+    "es6": "rollup --format=es6 --output=es6/should.js lib/should.js",
+    "build": "npm run cjs && npm run es6",
+    "prepublish": "npm run build && npm run browser",
+    "pretest": "npm run build",
     "test": "mocha -R mocha-better-spec-reporter --check-leaks ./test/*.test.js ./test/**/*.test.js",
     "zuul": "zuul -- ./test/**/*.test.js ./test/*.test.js",
-    "browser": "gulp script"
+    "browser": "rollup -c rollup.config.js  --output ./should.js"
   },
   "devDependencies": {
     "bluebird": "^3.0.6",
-    "browserify": "latest",
-    "bundle-collapser": "^1.2.1",
     "eslint": "^2.4.0",
-    "gulp": "^3.8.10",
-    "gulp-derequire": "^2.1.0",
-    "gulp-rename": "^1.2.0",
-    "gulp-uglify": "^1.0.1",
-    "gulp-wrapper": "^1.0.0",
-    "lodash.template": "^4.2.4",
     "mocha": "latest",
     "mocha-better-spec-reporter": "latest",
-    "vinyl-buffer": "^1.0.0",
-    "vinyl-source-stream": "^1.1.0",
+    "rollup": "^0.26.3",
+    "rollup-plugin-node-resolve": "^1.5.0",
     "zuul": "latest"
   },
   "keywords": [
@@ -39,10 +36,10 @@
   "main": "./index.js",
   "license": "MIT",
   "dependencies": {
-    "should-equal": "0.8.0",
-    "should-format": "0.3.2",
-    "should-type": "0.2.0"
-  }
+    "should-equal": "^1.0.0",
+    "should-format": "^1.0.0",
+    "should-type": "^1.0.0"
+  },
   "files": [
     "cjs/*",
     "es6/*",

package.json

@@ -0,0 +1,44 @@
+/*eslint-env node */
+'use strict';
+
+const nodeResolve = require('rollup-plugin-node-resolve');
+
+const pkg = require('./package.json');
+
+const banner = `/*!
+ * ${pkg.name} - ${pkg.description}
+ * @version v${pkg.version}
+ * @author ${pkg.author}
+ * @link ${pkg.homepage}
+ * @license ${pkg.license}
+ */
+`;
+
+const outro = `
+if (typeof define === 'function' && define.amd) {
+  define([], function() { return should });
+} else if (typeof module === 'object' && module.exports) {
+  module.exports = should;
+} else {
+  this.Should = should;
+
+  Object.defineProperty(this, 'should', {
+    enumerable: false,
+    configurable: true,
+    value: should
+  });
+}`;
+
+module.exports = {
+  entry: 'browser-entry.js',
+  banner,
+  outro,
+  format: 'iife',
+  plugins: [
+    nodeResolve({
+      jsnext: true,
+      main: true,
+      preferBuiltins: false
+    })
+  ]
+};