Possibly unhandled Error: path should be string

[Benjamin Harris]

I'm getting the following error:

Possibly unhandled Error: path should be string
    at File.Object.defineProperty.set (/Users/benjaminrh/appem/node_modules/gulp/node_modules/vinyl-fs/node_modules/vinyl/index.js:166:41)
    at Function.assign (/Users/benjaminrh/appem/node_modules/gulp-cache/node_modules/lodash-node/modern/objects/assign.js:63:21)
    at /Users/benjaminrh/appem/node_modules/gulp-cache/lib/TaskProxy.js:20:19
    at tryCatch1 (/Users/benjaminrh/appem/node_modules/gulp-cache/node_modules/bluebird/js/main/util.js:64:19)
    at Promise$_callHandler [as _callHandler] (/Users/benjaminrh/appem/node_modules/gulp-cache/node_modules/bluebird/js/main/promise.js:708:13)
    at Promise$_settlePromiseFromHandler [as _settlePromiseFromHandler] (/Users/benjaminrh/appem/node_modules/gulp-cache/node_modules/bluebird/js/main/promise.js:724:18)
    at Promise$_settlePromiseAt [as _settlePromiseAt] (/Users/benjaminrh/appem/node_modules/gulp-cache/node_modules/bluebird/js/main/promise.js:896:14)
    at Promise$_fulfillPromises [as _fulfillPromises] (/Users/benjaminrh/appem/node_modules/gulp-cache/node_modules/bluebird/js/main/promise.js:1041:14)
    at Async$_consumeFunctionBuffer [as _consumeFunctionBuffer] (/Users/benjaminrh/appem/node_modules/gulp-cache/node_modules/bluebird/js/main/async.js:64:12)
    at Async$consumeFunctionBuffer (/Users/benjaminrh/appem/node_modules/gulp-cache/node_modules/bluebird/js/main/async.js:37:14)

[Jacob Gable]

Ok. Kinda hard to troubleshoot with just that information. Can you provide a little more context? Perhaps a way I could reproduce it on my side?

[Benjamin Harris]

Yeah! I'm wrapping it around my image minifier, the section from the gulp task looks like this:

return gulp.src(paths.images)
    .pipe($.cache($.imagemin({
        progressive: true,
        interlaced: true
    })))
    .pipe(gulp.dest(paths.imageDist));

Removing the $.cache there makes everything work normally.

[Vincent Briglia]

same issue here, running gulp-imagemin 1.0.1, gulp-cache 0.2.2

[Jacob Gable]

Does anyone have a repo I could clone down to reproduce this with? My test repo running with gulp-imagemin 1.0.1 and gulp-cache 0.2.2 is not running into this.

You could also try clearing your cache and running the task again:

gulp.task('clear', function (done) {
    return cache.clearAll(done);
});

[Allan Kimmer Jensen]

Same problem for me with:

return gulp.src('app/images/**/*')
        .pipe($.cache($.imagemin({
            optimizationLevel: 3,
            progressive: true,
            interlaced: true
        })))
        .pipe(gulp.dest('build/images'))
        .pipe($.size());


And ´gulp-imagemin@0.5.0´ `gulp-cache@0.1.11`

[Jacob Gable]

@Saturate Both of those modules are out of date, recommend upgrading and clearing your cache using the code I provided above.

Can't really debug any further on this unless someone gets me access to their repo to verify, or sets up a repo independently that reproduces the issue.

[Lucas Bonomi]

Thank you @BenjaminRH for the hint. I removed $.cache() and it works now :)