Error, if use stream and empty file

[vitstr]

Hi, guys!

I'm use:

• node v4.2.1
• gulp 3.9.0
• wiredep 2.2.2

I have two scss file in 'app/assets/styles/' folder. One file is empty.
If run this code, wiredep return error.

var gulp = require('gulp');
var gulpLoadPlugins = require('gulp-load-plugins');
var wiredepGulp = require('wiredep').stream;
var $ = gulpLoadPlugins();

gulp.task('wiredep', function () {
    return gulp.src('app/assets/styles/*.scss', {base: 'src'})
        .pipe(wiredepGulp())
        .pipe(gulp.dest('app'));
});

Error text:

events.js:141
      throw er; // Unhandled 'error' event
      ^

TypeError: must start with number, buffer, array or string
    at fromObject (buffer.js:167:9)
    at new Buffer (buffer.js:58:10)
    at DestroyableTransform._transform (/Users/xxx/ownCloud/Projects/base-layouts/node_modules/wiredep/wiredep.js:135:23)
    at DestroyableTransform.Transform._read (/Users/xxx/ownCloud/Projects/base-layouts/node_modules/wiredep/node_modules/readable-stream/lib/_stream_transform.js:184:10)
    at DestroyableTransform.Transform._write (/Users/xxx/ownCloud/Projects/base-layouts/node_modules/wiredep/node_modules/readable-stream/lib/_stream_transform.js:172:12)
    at doWrite (/Users/xxx/ownCloud/Projects/base-layouts/node_modules/wiredep/node_modules/readable-stream/lib/_stream_writable.js:237:10)
    at writeOrBuffer (/Users/xxx/ownCloud/Projects/base-layouts/node_modules/wiredep/node_modules/readable-stream/lib/_stream_writable.js:227:5)
    at DestroyableTransform.Writable.write (/Users/xxx/ownCloud/Projects/base-layouts/node_modules/wiredep/node_modules/readable-stream/lib/_stream_writable.js:194:11)
    at DestroyableTransform.ondata (/Users/xxx/ownCloud/Projects/base-layouts/node_modules/readable-stream/lib/_stream_readable.js:578:20)
    at emitOne (events.js:77:13)

but, if run this code (without gulp stream), build is successful

gulp.task('wiredep', function () {
    require('wiredep')({
        src: 'app/assets/styles/*.scss'
    });
});

It is bug or feature?) Thanks.

[zfarrugia]

Im having a similar/same issue:

node -v :: v5.0.0
gulp -v :: 3.9.0
wiredep :: 2.2.2

events.js:141
throw er; // Unhandled 'error' event
^

Error: Error: angular is not installed. Try running bower install.
at /Users/zac/PhpstormProjects/myApp/node_modules/wiredep/wiredep.js:30:56
at /Users/zac/PhpstormProjects/myApp/node_modules/wiredep/lib/detect-dependencies.js:145:29
at forOwn (/Users/zac/PhpstormProjects/myApp/node_modules/wiredep/node_modules/lodash/dist/lodash.js:2106:15)
at Function.forEach (/Users/zac/PhpstormProjects/myApp/node_modules/wiredep/node_modules/lodash/dist/lodash.js:3303:9)
at detectDependencies (/Users/zac/PhpstormProjects/myApp/node_modules/wiredep/lib/detect-dependencies.js:34:7)
at wiredep (/Users/zac/PhpstormProjects/myApp/node_modules/wiredep/wiredep.js:70:39)
at DestroyableTransform._transform (/Users/zac/PhpstormProjects/myApp/node_modules/wiredep/wiredep.js:135:34)
at DestroyableTransform.Transform._read (/Users/zac/PhpstormProjects/myApp/node_modules/wiredep/node_modules/readable-stream/lib/_stream_transform.js:184:10)
at DestroyableTransform.Transform._write (/Users/zac/PhpstormProjects/myApp/node_modules/wiredep/node_modules/readable-stream/lib/_stream_transform.js:172:12)
at doWrite (/Users/zac/PhpstormProjects/myApp/node_modules/wiredep/node_modules/readable-stream/lib/_stream_writable.js:237:10)

[corin12355]

Same issue here

gulp -v
CLI version = 0.3.0
Local version = 3.9.0

node -v = v5.0.0

wiredep = 3.0.0-beta

events.js:141
throw er; // Unhandled 'error' event
^

TypeError: must start with number, buffer, array or string
at fromObject (buffer.js:167:9)
at new Buffer (buffer.js:58:10)
at DestroyableTransform._transform (/home/sgw/public_html/sag/node_modules/wiredep/wiredep.js:135:23)
at DestroyableTransform.Transform._read (/home/sgw/public_html/sag/node_modules/through2/node_modules/readable-stream/lib/_stream_transform.js:184:10)
at DestroyableTransform.Transform._write (/home/sgw/public_html/sag/node_modules/through2/node_modules/readable-stream/lib/_stream_transform.js:172:12)
at doWrite (/home/sgw/public_html/sag/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:237:10)
at writeOrBuffer (/home/sgw/public_html/sag/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:227:5)
at DestroyableTransform.Writable.write (/home/sgw/public_html/sag/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:194:11)
at write (/home/sgw/public_html/sag/node_modules/through2/node_modules/readable-stream/lib/_stream_readable.js:623:24)
at flow (/home/sgw/public_html/sag/node_modules/through2/node_modules/readable-stream/lib/_stream_readable.js:632:7)

[baerkins]

Same exact thing as @corin12355 (same versions and all)

[brousalis]

The fix can be made in wiredep.js line 130:

opts.stream = {
   src: file.contents.toString() || "",

it tries to load the stream with undefined because the file is blank, which causes the TypeError.

[corin12355]

@iamhexcoder I found a fix, basically if a file is empty then it'll error out with a non-descriptive error.
Just check your manifest for empty files.

[coldkite]

agree with @brousalis
actually it could be anything except null or empty string
so, || "" not works. something like || " " works

[akleiber]

quickfix https://www.npmjs.com/package/gulp-clip-empty-files

[mbjacket81]

I like your solution akleiber but coldkite's solution worked for me as well. Thanks!

[eddiemonge]

PRs welcome

[dmishh]

Got the same issue with an empty Google Analytics verification html file. Added one space to it as a temporary solution