File Extension Already Occupied

[dtothefp]

This error just started showing up and I'm not sure what it means?

verion: 2.2.29

[Error: File extension "jpeg" is already occupied by require-hacker]

config

{
    "debug": false,
    "webpack_assets_file_path": "../dist/webpack-main-stats.json",
    "assets": {
        "images": {
            "extensions": [
                "jpeg",
                "jpg",
                "png",
                "gif",
                "svg"
            ]
        },
        "styles": {
            "extensions": [
                "css",
                "scss"
            ]
        }
    }
}

const tools = new WebpackIsomorphicTools(toolsConfig).development(isDev);
tools.server(statsDir).then //...

[catamphetamine]

give me the full log, maybe I can get an idea

[dtothefp]

ok

[webpack-isomorphic-tools] [debug] instantiated webpack-isomorphic-tools with options {
  "debug": true,
  "webpack_assets_file_path": "../dist/webpack-main-stats.json",
  "assets": {
    "images": {
      "extensions": [
        "jpeg",
        "jpg",
        "png",
        "gif",
        "svg"
      ]
    },
    "styles": {
      "extensions": [
        "css",
        "scss"
      ]
    }
  },
  "webpack_stats_file_path": "webpack-stats.json"
}
[webpack-isomorphic-tools] [debug] entering development mode

DEBUG:   hfa_bdu Running Isomporphic Tools +238ms
[webpack-isomorphic-tools] [debug] registering require() hooks for assets
[webpack-isomorphic-tools] [debug]  registering a require() hook for *.jpeg
[require-hook] [debug] Hooking into *.jpeg files loading
[webpack-isomorphic-tools] [debug]  registering a require() hook for *.jpg
[require-hook] [debug] Hooking into *.jpg files loading
[webpack-isomorphic-tools] [debug]  registering a require() hook for *.png
[require-hook] [debug] Hooking into *.png files loading
[webpack-isomorphic-tools] [debug]  registering a require() hook for *.gif
[require-hook] [debug] Hooking into *.gif files loading
[webpack-isomorphic-tools] [debug]  registering a require() hook for *.svg
[require-hook] [debug] Hooking into *.svg files loading
[webpack-isomorphic-tools] [debug]  registering a require() hook for *.css
[require-hook] [debug] Hooking into *.css files loading
[webpack-isomorphic-tools] [debug]  registering a require() hook for *.scss
[require-hook] [debug] Hooking into *.scss files loading

[catamphetamine]

so, no error so far

[dtothefp]

sorry messed that up

options {
  "debug": true,
  "webpack_assets_file_path": "../dist/webpack-main-stats.json",
  "assets": {
    "images": {
      "extensions": [
        "jpeg",
        "jpg",
        "png",
        "gif",
        "svg"
      ]
    },
    "styles": {
      "extensions": [
        "css",
        "scss"
      ]
    }
  },
  "webpack_stats_file_path": "webpack-stats.json"
}
[webpack-isomorphic-tools] [debug] entering development mode
webpack_isomorphic_tools {
  hooks: [],
  cached_assets: [],
  options:
   { debug: true,
     webpack_assets_file_path: '../dist/webpack-main-stats.json',
     assets: { images: [Object], styles: [Object] },
     webpack_stats_file_path: 'webpack-stats.json',
     development: true },
  log:
   Log {
     options: { debug: true },
     preamble: '[webpack-isomorphic-tools]' } }
[webpack-isomorphic-tools] [debug] registering require() hooks for assets
[webpack-isomorphic-tools] [debug]  registering a require() hook for *.jpeg
[require-hook] [debug] Hooking into *.jpeg files loading
[webpack-isomorphic-tools] [debug]  registering a require() hook for *.jpg
[require-hook] [debug] Hooking into *.jpg files loading
[webpack-isomorphic-tools] [debug]  registering a require() hook for *.png
[require-hook] [debug] Hooking into *.png files loading
[webpack-isomorphic-tools] [debug]  registering a require() hook for *.gif
[require-hook] [debug] Hooking into *.gif files loading
[webpack-isomorphic-tools] [debug]  registering a require() hook for *.svg
[require-hook] [debug] Hooking into *.svg files loading
[webpack-isomorphic-tools] [debug]  registering a require() hook for *.css
[require-hook] [debug] Hooking into *.css files loading
[webpack-isomorphic-tools] [debug]  registering a require() hook for *.scss
[require-hook] [debug] Hooking into *.scss files loading
****BEFORE****

DEBUG:   hfa_bdu Running Isomporphic Tools +242ms
[webpack-isomorphic-tools] [debug] registering require() hooks for assets
[webpack-isomorphic-tools] [debug]  registering a require() hook for *.jpeg
[require-hook] [debug] Hooking into *.jpeg files loading
[runner]: Dev Error [Error: File extension "jpeg" is already occupied by require-hacker]

[catamphetamine]

so, you are running webpack-isomorphic-tools twice.
that's the cause fo the error.

[dtothefp]

hmmm...I'm doing this

const tools = new WebpackIsomorphicTools(toolsConfig).development(isDev);
tools.server(statsDir).then

is that a problem?

[catamphetamine]

That shouldn't be a problem.
Try to search for new WebpackIsomorphicTools in your project, maybe you are calling it in more than one place.

[dtothefp]

ok weird, this just started happening so I'm not sure what is going on?

[catamphetamine]

what has changed?

[dtothefp]

not sure, I'll let you know if I figure it out. Just rebased off another persons branch so maybe something crazy happened

[dtothefp]

haaa...well just in case you ever wondered don't do this. I must have been clobbering something on global that was messing with ismorphic tools...

var jsdom = require('jsdom');

var doc = jsdom.jsdom('<!doctype html><html><body></body></html>');
var win = doc.parentWindow;

global.document = doc;
global.window = win;
Object.assign(global, win);

instead do this

global.document = doc;
global.window = win;
global.navigator = win.navigator;

[catamphetamine]

FYI
I'm posting this in every issue and PR to notify whoever may be interested:
today I've released an alternative helper library called universal-webpack.
It takes a different approach than webpack-ismorphic-tools and instead of hacking Node.js require() calls it just compiles all code with target: 'node' webpack configuration option.
As a result, all Webpack plugins and features are supported.
If you think you might need that here's an example project:
https://github.com/halt-hammerzeit/webpack-react-redux-isomorphic-render-example