bundle: fix and document streams

README.md

@@ -43,10 +43,7 @@ __api__
 const sheetify = require('sheetify')
 
 const bundler = sheetify('./index.css')
-bundler.bundle((err, res) => {
-  if (err) return console.error(err)
-  console.log(res)
-})
+bundler.bundle().pipe(process.stdout)
 ```
 
 ## Options

index.js

@@ -1,6 +1,7 @@
 const styledeps = require('style-deps')
 const assert = require('assert')
 const xtend = require('xtend')
+const noop = require('noop2')
 
 module.exports = Sheetify
 
@@ -24,6 +25,7 @@ Sheetify.prototype.bundle = function (opts, done) {
     done = opts
     opts = {}
   }
+  done = done || noop
   assert.equal(typeof opts, 'object')
   assert.equal(typeof done, 'function')
 

package.json

@@ -23,15 +23,18 @@
   "dependencies": {
     "cliclopts": "^1.1.1",
     "minimist": "^1.2.0",
+    "noop2": "^2.0.0",
     "style-deps": "^2.0.1",
     "xtend": "^4.0.0"
   },
   "devDependencies": {
+    "concat-stream": "^1.5.0",
     "dependency-check": "^2.5.0",
     "faucet": "^0.0.1",
     "istanbul": "^0.3.19",
     "standard": "^5.2.1",
     "tape": "^4.2.0",
+    "through2": "^2.0.0",
     "wrap-selectors": "^0.1.0"
   }
 }

test/index.js

@@ -1,3 +1,4 @@
+const concat = require('concat-stream')
 const wrap = require('wrap-selectors')
 const test = require('tape')
 const fs = require('fs')
@@ -7,6 +8,7 @@ require('./concat')
 const sheetify = require('..')
 
 test('basic', function (t) {
+  t.plan(2)
   const expects = fs.readFileSync(__dirname + '/fixtures/basic-expected.css')
   const bundler = sheetify(__dirname + '/fixtures/basic.css')
 
@@ -19,11 +21,27 @@ test('basic', function (t) {
   bundler.bundle(function (err, output) {
     t.ifError(err, 'bundled without error')
     t.equal(String(expects).trim(), output.trim(), 'expected output')
-    t.end()
   })
 })
 
+test('stream', function (t) {
+  t.plan(1)
+  const expects = fs.readFileSync(__dirname + '/fixtures/basic-expected.css')
+  const bundler = sheetify(__dirname + '/fixtures/basic.css')
+
+  bundler.transform(function (file) {
+    return function (ast, next) {
+      next(null, wrap()(ast))
+    }
+  })
+
+  bundler.bundle().pipe(concat(function (css) {
+    t.equal(expects.toString().trim(), css.toString().trim())
+  }))
+})
+
 test('imports', function (t) {
+  t.plan(2)
   const expects = fs.readFileSync(__dirname + '/fixtures/imports-expected.css')
   const bundler = sheetify(__dirname + '/fixtures/imports.css')
 
@@ -36,6 +54,5 @@ test('imports', function (t) {
   bundler.bundle(function (err, output) {
     t.ifError(err, 'bundled without error')
     t.equal(String(expects).trim(), output.trim(), 'expected output')
-    t.end()
   })
 })