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Phantom can not parse LESS

See original GitHub issue

I am using webshot to try to generate a screenshot of a website that is compiling LESS on the client machine. However this fails. webshot uses Phantom.js as an underlying mechanism.

For example when I target this Fiddle http://jsfiddle.net/Yhcz4/23/ I get the following Phantom error in the initFunctions function (when I remove this line other unrelated errors pop up)

TypeError: 'undefined' is not a function (evaluating '_math.bind(null, Math[f], mathFunctions[f])')

What am I doing wrong. Or is Phantom JS simply not able to work with Less.js?

Issue Analytics

State:
Created 9 years ago
Comments:14 (10 by maintainers)

Top GitHub Comments

1reaction

clementgarniercommented, Apr 2, 2014

I ran into the exact same bug today and it seems to be related to this issue: https://github.com/ariya/phantomjs/issues/10522

tl; dr: the Webkit version used by PhantomJS is missing the Function.prototype.bind implementation.

I suppose this is not triggered while testing less using PhantomJS simply because the initFunctions() function is not tested, and it is the only one using bind().

This seems to work for me: https://github.com/ariya/phantomjs/issues/10522#issuecomment-16125397

0reactions

seven-phases-maxcommented, Jan 22, 2016

@RALifeCoach

Could you also please provide an example of what that shim might look like

It’s a “standard” ES5 polyfill script: es-5 shim (The link is right in the doc section @lukeapage pointed to).

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