Uncaught TypeError: fs.readFileSync is not a function

meteor reactjs webpack mapbox-gl-js
Muhaimin picture Muhaimin · Jun 3, 2016 · Viewed 9.6k times · Source

I am trying to get webpack and mapbox-gl work together within Meteor system. I have look everywhere about the error mentioned above but none works. Here is my webpack setup 

{
  "root": "src",
  "devServer": {
    "host": "localhost"
  },
  "sass": {
    "module": true
  },
  "css": {
    "module": true
  },
  "node": {
    "fs": "empty"
  },
  "externals": {
    "fs": "{}",
    "tls": "{}",
    "net": "{}",
    "console": "{}"
  },
  "module": {
    "loaders": [
      { 
        "test": "/\\.js$/", 
        "include": "./node_modules/mapbox-gl/js/render/painter/use_program.js", 
        "loader": "transform/cacheable?brfs"
      }, {
        "test": "/\\.js$/",
        "include": "./node_modules/mapbox-gl-shaders/index.js",
        "loader": "transform/cacheable?brfs"
      }, {
        "test": "/\\.js$/",
        "include": "./node_modules/webworkify-webpack/index.js",
        "loader": "worker"
      }, {
        "test": "/\\.css$/",
        "loader": "style!css?importLoaders=1!autoprefixer",
        "include": [
            "./node_modules"
        ]
      }, {
        "test": "/\\.scss$/",
        "include": [
          "./node_modules"
        ]
      }, {
        "test": "/\\.sass$/",
        "loader": "!style!css!sass?indentedSyntax!",
        "include": [
          "./node_modules"
        ]
      }, { 
        "test": "/\\.json$/", 
        "loader": "json-loader" 
      }, { 
        "test": "/\\.(png|jpg|jpeg|gif)$/", 
        "loader": "url-loader" 
      }
    ]
  },
  "postcss": [ "autoprefixer({ browsers: [last 2 versions'] })" ],
  "postLoaders": [
    {
      "include": "./node_modules/mapbox-gl/",
      "loader": "transform",
      "query": "brfs"
    }
  ],
  "resolve": {
    "alias": {
      "webworkify": "webworkify-webpack"
    }
  }
}

For your information, I use webpack provided by the Reactive Stack and the way it setup the webpack slightly different.

and here is my package.json for the npm setup

"dependencies": {
    "meteor-node-stubs": "^0.2.3",
    "meteoredux": "0.0.2",
    "numeral": "^1.5.3",
    "object-assign": "^4.0.1",
    "react": "^0.14.8",
    "react-addons-create-fragment": "^0.14.8",
    "react-addons-css-transition-group": "^0.14.8",
    "react-addons-linked-state-mixin": "^0.14.8",
    "react-addons-perf": "^0.14.8",
    "react-addons-pure-render-mixin": "^0.14.8",
    "react-addons-test-utils": "^0.14.8",
    "react-addons-transition-group": "^0.14.8",
    "react-addons-update": "^0.14.8",
    "react-dom": "^0.14.8",
    "react-helmet": "^3.0.0",
    "react-mixin": "^3.0.4",
    "react-redux": "^4.4.4",
    "react-tap-event-plugin": "^0.2.2",
    "redux": "^3.4.0",
    "string": "^3.3.1"
  },
  "devDependencies": {
    "babel": "^6.3.26",
    "babel-core": "^6.7.4",
    "babel-loader": "^6.2.4",
    "babel-plugin-add-module-exports": "^0.1.2",
    "babel-plugin-react-transform": "^2.0.0",
    "babel-plugin-transform-decorators-legacy": "^1.3.2",
    "babel-preset-es2015": "^6.6.0",
    "babel-preset-react": "^6.5.0",
    "babel-preset-stage-0": "^6.5.0",
    "brfs": "^1.4.3",
    "css-loader": "^0.23.1",
    "expose-loader": "^0.7.1",
    "extract-text-webpack-plugin": "^0.9.1",
    "file-loader": "^0.8.5",
    "geojson": "^0.3.0",
    "less": "^2.3.1",
    "less-loader": "^2.2.3",
    "node-sass": "^3.6.0",
    "react-transform-catch-errors": "^1.0.0",
    "react-transform-hmr": "^1.0.1",
    "redbox-react": "^1.2.0",
    "sass-loader": "^3.2.0",
    "sass-resources-loader": "^1.0.2",
    "style-loader": "^0.13.1",
    "url-loader": "^0.5.7",
    "webpack": "^1.13.0",
    "webpack-hot-middleware": "^2.4.1",
    "json-loader": "^0.5.4",
    "webworkify-webpack": "^1.1.0",
    "transform-loader": "^0.2.3",
    "mapbox-gl": "^0.19.0"
  }

What have I done wrong? Appreciate someone from MDG can explain the error because I believe it has something to with Meteor system. FYI, I use npm start to run the page

UPDATE

Based on suggestion from @also, I move part of my setup to webpack.conf.js

const path = require('path');
const webpack = require('webpack');

module.exports = {
    resolve: {
        extensions: ['', '.js', '.jsx'],
        alias: {
            webworkify: 'webworkify-webpack'
        }
    },
    module: {
        loaders: [{
            test: /\.json$/,
            loader: 'json-loader'
        }, {
            test: /\.js$/,
            include: path.resolve('./node_modules/mapbox-gl-shaders/index.js'),
            loader: 'transform/cacheable?brfs'
        }],
        postLoaders: [{
            include: /node_modules\/mapbox-gl-shaders/,
            loader: 'transform',
            query: 'brfs'
        }]
    }
};

which I get the setup from here. And my webpack.json

{
  "root": "src",
  "devServer": {
    "host": "localhost"
  },
  "sass": {
    "module": true
  },
  "css": {
    "module": true
  },
  "module": {
    "loaders": [
      {
        "test": "/\\.css$/",
        "loader": "style!css?importLoaders=1!autoprefixer",
        "include": [
            "./node_modules",
          "./src/SewApps/client/css",
            "./src/SewApps/client/Search/css"
        ]
      }, {
        "test": "/\\.scss$/",
        "include": [
          "./node_modules",
          "./src/SewApps/client/css",
          "./src/SewApps/client/Search/css"
        ]
      }, {
        "test": "/\\.sass$/",
        "loader": "!style!css!sass?indentedSyntax!",
        "include": [
          "./node_modules"
        ]
      }, { 
        "test": "/\\.(png|jpg|jpeg|gif)$/", 
        "loader": "url-loader" 
      }
    ]
  },
  "postcss": [ "autoprefixer({ browsers: [last 2 versions'] })" ]
}

but I still hit another error

=> Exited with code: 8                        
W20160609-14:26:04.106(8)? (STDERR) 
W20160609-14:26:04.107(8)? (STDERR) /Users/muhaimincs/Documents/soulja/src/.meteor/local/build/programs/server/app/server.js:59
W20160609-14:26:04.107(8)? (STDERR)     import { ReactRouterSSR } from 'meteor/reactrouter:react-router-ssr';
W20160609-14:26:04.107(8)? (STDERR)     ^^^^^^
W20160609-14:26:04.107(8)? (STDERR) SyntaxError: Unexpected reserved word
W20160609-14:26:04.107(8)? (STDERR)     at /Users/muhaimincs/Documents/suolja/src/.meteor/local/build/programs/server/boot.js:278:30
W20160609-14:26:04.107(8)? (STDERR)     at Array.forEach (native)
W20160609-14:26:04.107(8)? (STDERR)     at Function._.each._.forEach (/Users/muhaimincs/.meteor/packages/meteor-tool/.1.3.1.r1m70++os.osx.x86_64+web.browser+web.cordova/mt-os.osx.x86_64/dev_bundle/server-lib/node_modules/underscore/underscore.js:79:11)
W20160609-14:26:04.107(8)? (STDERR)     at /Users/muhaimincs/Documents/soulja/src/.meteor/local/build/programs/server/boot.js:133:5

Answer

also picture also · Jun 6, 2016

You're using strings for the test and include loader options which won't match. These are not converted to regular expressions, so things like js$ will never match–that would mean a literal $ in the filename. When the condition is a string, it will be compared against the full path, so ./node_modules/mapbox-gl/js/render/painter/use_program.js wouldn't match either.

Since the loader conditions aren't being met, the loader isn't running and the fs.readFileSync call isn't being inlined by the brfs transform.

To fix this, it looks like the Reactive Stack Webpack plugin will read a webpack.conf.js file, where you could use actual regular expressions and match all .js files or the particular files that need the transform.

For example, in webpack.conf.js (note that this file is specific to this Meteor Webpack plugin):

module.exports = {
  module: {
    loaders: [
      {
        test: /mapbox-gl.+\.js$/,
        loader: 'transform/cacheable?brfs'
      }
    ]
  }
};

This will match all .js files with mapbox-gl in the path.

I think you'll want to update all your module.loaders to use regular expressions. If you need to check if a loader is matching, a quick hack is to change the loader to something bogus:

      {
        test: /mapbox-gl.+\.js$/,
        loader: 'XXXtransform/cacheable?brfs'
      }

If it matches, Webpack will throw an exception when it can't find the loader. On the other hand, if you don't see an exception you know you've got a problem with your configuration.

Related questions

Unexpected Token after const

I am getting an unexpected token error in React when I try to specify a constant, and I cannot seem to figure out why. My code is pretty simple, and I have followed the react-bootstrap examples here almost exactly. My …

Read More
Console logging for react?

I'm super new to React and I'm trying to get it set up for Meteor and piecing stuff together from other sources too. One of these other sources set up console logging for the app, but I'm going the ES6/…

Read More
Generating a PDF file from React Components

I have been building a polling application. People are able to create their polls and get data regarding the question(s) they ask. I would like to add the functionality to let the users download the results in the form …

Read More