Should not allow writing multiple input files when writing to stdout

Author: RyanZim

index.js

@@ -112,7 +112,7 @@ Promise.resolve()
       error('You must pass a valid list of files to parse')
     }
 
-    if (i.length > 1 && output) {
+    if (i.length > 1 && !argv.dir && !argv.replace) {
       error('Must use --dir or --replace with multiple input files')
     }
 

test/error.js

@@ -16,6 +16,14 @@ test('multiple input files && --output', (t) => {
   })
 })
 
+test('multiple input files && writing to stdout', (t) => {
+  return cli(['test/fixtures/*.css'])
+  .then(({ err, code }) => {
+    t.is(code, 1, 'expected non-zero error code')
+    t.regex(err, /Must use --dir or --replace/)
+  })
+})
+
 test('invalid --config', (t) => {
   return cli(
     [