Could not find preinstalled "es2015" relative to "web / static / js" directory

Question

I am trying to create a roaming server to work with elixir and phoenix, but after installing all the requirements and dependencies and when mix phoenix.server I get the following error:

Mistake

: Failed to compile "web / static / js / app.js". Could not find preinstalled "es2015" relative to directory "web / static / js";

I'm not sure about the "preset" context here, I hope a more experienced phoenix user will know what he gets.

Some runaway Google gave me nothing but how it could have been connected with babel.

Edit: I just tried installing what I consider to be the missing package, sudo npm install babel-preset-es2015 -g , but it did not resolve the error.

Answer 1

See the fix here: https://github.com/phoenixframework/phoenix/issues/1410

• Update to node> = v5.0.0
• npm cache clean
• cd my_app
• rm -rf node_modules /
• npm install
• mix phoenix.server

Answer 2

I see that the answer has already been accepted here. I just ran into the same error and tried the Chris solution posted above. This did not work for me, but based on the github Chris theme link above, I found a solution that worked for me.

I found that you do not have to use node v5.0 +. I am using node 4.4.3 LTS and everything works.

npm install --save-dev babel-preset-es2015

Answer 3

My solution that works fine:

 .pipe(babel({ presets: [require('babel-preset-es2015')] })) 

Thank!

Answer 4

The accepted answer did not work for me.

I had to remove .babelrc in the parent directories of my application.