gulp: TypeError: Cannot read property 'length' of undefined

Since today whenever I do a clean install of gulp I get the following error:

TypeError: Cannot read property 'length' of undefined
[10:38:42] TypeError: Cannot read property 'length' of undefined
    at flattenGlob (/Users/miguel/src/reco2/node_modules/glob2base/index.js:9:25)
    at setToBase (/Users/miguel/src/reco2/node_modules/glob2base/index.js:48:12)
    at module.exports (/Users/miguel/src/reco2/node_modules/glob2base/index.js:56:19)
    at Object.gs.createStream (/Users/miguel/src/reco2/node_modules/glob-stream/index.js:34:42)
    at /Users/miguel/src/reco2/node_modules/glob-stream/index.js:80:17
    at Array.map (native)
    at Object.gs.create (/Users/miguel/src/reco2/node_modules/glob-stream/index.js:79:29)
    at Gulp.src (/Users/miguel/src/reco2/node_modules/vinyl-fs/lib/src/index.js:33:23)
    at Gulp.<anonymous> (/Users/miguel/src/reco2/gulpfile.js:13:8)
    at module.exports (/Users/miguel/src/reco2/node_modules/orchestrator/lib/runTask.js:34:7)

About this issue

Original URL
State: closed
Created 8 years ago
Reactions: 32
Comments: 51 (5 by maintainers)

Commits related to this issue

fix linux build — committed to microsoft/vscode by joaomoreno 8 years ago

Most upvoted comments

This has been fixed upstream, delete node_modules and reinstall should work now

+35

TheSpyder on Aug 22, 2016

yeah, the chain is about 5 dependencies long. Didn’t think I needed to draw too much attention to the underlying issue 😃

+22

TheSpyder on Aug 22, 2016

For the curious, bug reference MoOx/reduce-css-calc#13

+11

TheSpyder on Aug 22, 2016

@delta98 commenting gulp-cssnano fixes it for me also

joshbalfour on Aug 22, 2016

vinyl-fs dependency in gulp 3.9.1 is ^0.3.0.

cd node_modules/gulp nano package.json change vinyl-fs dep from ^0.3.0 to 2.4.3

node_modules/gulp/npm install . Get errors, but after updating vinyl-fs, gulp 3.9.1 seems to work.

verify with

npm ls vinyl-fs thinglink@0.0.1 /Users/sulmanen/work/site └─┬ gulp@3.9.1 └── vinyl-fs@2.4.3

Seems to be a glob2base issue, and there’s a pull there https://github.com/contra/glob2base/pull/9/files

sulmanen on Aug 22, 2016

Same here:

TypeError: Cannot read property 'length' of undefined
    at flattenGlob (/Users/user/Sites/project/node_modules/glob2base/index.js:9:25)
    at setToBase (/Users/user/Sites/project/node_modules/glob2base/index.js:48:12)
    at module.exports (/Users/user/Sites/project/node_modules/glob2base/index.js:56:19)
    at Object.gs.createStream (/Users/user/Sites/project/node_modules/vinyl-fs/node_modules/glob-stream/index.js:34:42)
    at /Users/user/Sites/project/node_modules/vinyl-fs/node_modules/glob-stream/index.js:80:17
    at Array.map (native)
    at Object.gs.create (/Users/user/Sites/project/node_modules/vinyl-fs/node_modules/glob-stream/index.js:79:29)
    at Gulp.src (/Users/user/Sites/project/node_modules/vinyl-fs/lib/src/index.js:33:23)
    at module.exports (/Users/user/Sites/project/.build/tasks/javascript.js:11:17)
    at /Users/user/Sites/project/gulpfile.js:34:52
    at Array.map (native)
    at Gulp.<anonymous> (/Users/user/Sites/project/gulpfile.js:33:46)
    at module.exports (/Users/user/Sites/project/node_modules/orchestrator/lib/runTask.js:34:7)
    at Gulp.Orchestrator._runTask (/Users/user/Sites/project/node_modules/orchestrator/index.js:273:3)
    at Gulp.Orchestrator._runStep (/Users/user/Sites/project/node_modules/orchestrator/index.js:214:10)
    at Gulp.Orchestrator.start (/Users/user/Sites/project/node_modules/orchestrator/index.js:134:8)

Triggered by the call gulp.src(options.src). options.src being a path string value

matthewnessworthy on Aug 22, 2016

Same here, the error seems to be triggered by any gulp.src() call : /

idflood on Aug 22, 2016

Please react with the 👍 or 🎉 emoji on one of @TheSpyder’s messages instead of writing an appreciative comment, thank you! There are 18 participants in this thread, and you are sending all of them notifications / emails.

callumacrae on Aug 22, 2016

It makes no sense at all… but when we (Microsoft/vscode) comment out this line, which requires gulp-cssnano, the error goes away. It’s as if some dependency within gulp-cssnano interferes with some dependency within gulp.

joaomoreno on Aug 22, 2016

@delta98 commenting gulp-cssnano fixes it for me

dortamiguel on Aug 22, 2016

@joaomoreno yeah, it stops the error, but something must have changed within the package, or cascades through that plugin. As @cfeeling says it’s not used on his project.

jjaybrown on Aug 22, 2016

(my bad, wrong button)

callumacrae on Aug 22, 2016

I can confirm this, even with an empty task:

[12:02:25] Using gulpfile ~/dev/teleport-skin/skin-builder/gulpfile.js
[12:02:25] Starting 'default'...
[12:02:25] Starting 'test'...
[12:02:25] 'test' errored after 3.83 ms
[12:02:25] TypeError: Cannot read property 'length' of undefined
    at flattenGlob (/home/pierre/dev/teleport-skin/skin-builder/node_modules/glob2base/index.js:9:25)
    at setToBase (/home/pierre/dev/teleport-skin/skin-builder/node_modules/glob2base/index.js:48:12)
    at module.exports (/home/pierre/dev/teleport-skin/skin-builder/node_modules/glob2base/index.js:56:19)
    at Object.gs.createStream (/home/pierre/dev/teleport-skin/skin-builder/node_modules/glob-stream/index.js:34:42)
    at Object.gs.create (/home/pierre/dev/teleport-skin/skin-builder/node_modules/glob-stream/index.js:68:42)
    at Gulp.src (/home/pierre/dev/teleport-skin/skin-builder/node_modules/vinyl-fs/lib/src/index.js:33:23)
    at Gulp.<anonymous> (/home/pierre/dev/teleport-skin/skin-builder/gulpfile.js:93:17)
    at module.exports (/home/pierre/dev/teleport-skin/skin-builder/node_modules/orchestrator/lib/runTask.js:34:7)
    at Gulp.Orchestrator._runTask (/home/pierre/dev/teleport-skin/skin-builder/node_modules/orchestrator/index.js:273:3)
    at Gulp.Orchestrator._runStep (/home/pierre/dev/teleport-skin/skin-builder/node_modules/orchestrator/index.js:214:10)

martpie on Aug 22, 2016