Issue when combining with imagemin-svgo 5.2.0

[bcreeves]

When using laravel-elixir-imagemin 0.2.3 with imagemin-svgo 5.2.0 the below error occurs:

/Users/brian/Sites/ddos/node_modules/is-svg/index.js:8
        var charCode = isBuf ? buf[i] : buf.charCodeAt(i);
                                           ^

TypeError: Cannot read property 'charCodeAt' of undefined
    at isBinary (/Users/brian/Sites/ddos/node_modules/is-svg/index.js:8:38)
    at module.exports (/Users/brian/Sites/ddos/node_modules/is-svg/index.js:19:10)
    at buf (/Users/brian/Sites/ddos/node_modules/imagemin-svgo/index.js:8:7)
    at Imagemin.use (/Users/brian/Sites/ddos/node_modules/imagemin/index.js:63:51)
    at DestroyableTransform.through.obj.percent (/Users/brian/Sites/ddos/node_modules/gulp-imagemin/index.js:47:5)
    at DestroyableTransform._transform (/Users/brian/Sites/ddos/node_modules/through2-concurrent/through2-concurrent.js:30:15)
    at DestroyableTransform.Transform._read (/Users/brian/Sites/ddos/node_modules/through2/node_modules/readable-stream/lib/_stream_transform.js:159:10)
    at DestroyableTransform.Transform._write (/Users/brian/Sites/ddos/node_modules/through2/node_modules/readable-stream/lib/_stream_transform.js:147:83)
    at doWrite (/Users/brian/Sites/ddos/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:313:64)
    at writeOrBuffer (/Users/brian/Sites/ddos/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:302:5)

If I downgrade imagemin-svgo to ^4.2.0 everything works.

[mikezange]

Had this while using with gulp-imagemin also, on node v4.0.0, got a feeling it is a imagemin-svgo issue.

Upgrading node to ^6 or downgrading imagemin-svgo to ^4.2.0 seems to solve.

[facundofarias]

I've solved it by updating laravel-elixir and laravel-elixir-imagemin to the latest version.