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Server side rendering fails with identifier 'Set' undefined

See original GitHub issue

Steps to reproduce

Make any old component
Set prerender to true
Try to render the component

Expected behavior

It should pre-render the component.

Actual behavior

Execjs crashes with the following error:

ExecJS::ProgramError (identifier 'Set' undefined):
  
(execjs):1
app/controllers/entry_point_controller.rb:3:in `index'

System configuration

Sprockets or Webpacker version: webpacker (3.5.5) React-Rails version: react-rails (2.4.7) React_UJS version: “react_ujs”: “^2.4.4” Rails version: rails (5.2.1) Ruby version: RUBY VERSION: 2.4.4 (2018-03-28 patchlevel 296) [i386-mingw32]

Basically everything works perfectly fine, but if I attempt to use server-side rendering, the program crashes with the above error: identifier 'Set' undefined. I thought it might have been due to an outdated, but I updated to the latest node and the issue persists.

Issue Analytics

State:
Created 5 years ago
Comments:12 (6 by maintainers)

Top GitHub Comments

1reaction

BookOfGregcommented, Oct 20, 2018

OH! You’re using your system NodeJS Do bundle add mini_racer and it will start working for you. Execjs automatically loads system JS runtime, which is Chakra on Windows, JSCore on OSX, and usually NodeJS if available. We only support Node > 6 (I think, It’s whichever one added ES6 and the new JSX features), therefore we do not support therubyracer as it’s using libv8-v3 which is far too old.

Upgrade your node to > 6, or include mini_racer.

0reactions

BookOfGregcommented, Nov 10, 2018

@rahulakurati Glad that solved it for you.

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