Wrap postcss errors

Author: w0rm

index.js

@@ -1,6 +1,7 @@
 var through = require('through2')
 var postcss = require('postcss')
 var applySourceMap = require('vinyl-sourcemaps-apply')
+var gutil = require('gulp-util')
 
 
 module.exports = function (processors, options) {
@@ -37,7 +38,11 @@ module.exports = function (processors, options) {
       opts.map = true
     }
 
-    result = processor.process(file.contents.toString('utf8'), opts)
+    try {
+      result = processor.process(file.contents.toString('utf8'), opts)
+    } catch (err) {
+      return cb(new gutil.PluginError('gulp-postcss', err))
+    }
 
     file.contents = new Buffer(result.css)
 

test.js

@@ -27,6 +27,25 @@ it('should transform css with multiple processors', function (cb) {
 })
 
 
+it('should correctly wrap postcss errors', function (cb) {
+
+  var stream = postcss([ doubler ])
+
+  stream.on('error', function (err) {
+    assert.ok(err instanceof gutil.PluginError)
+    assert.equal(err.plugin, 'gulp-postcss')
+    cb()
+  })
+
+  stream.write(new gutil.File({
+    contents: new Buffer('a {\n  a b {}\n}')
+  }))
+
+  stream.end()
+
+})
+
+
 function doubler (css) {
   css.eachDecl(function (decl) {
     decl.parent.prepend(decl.clone())