Error: EACCES, open '/build/bundle.js' when running webpack

Question

Unable to run webpack from a subdirectory in my project. This is the error I'm getting: Error: EACCES, open '/build/bundle.js'

And this is the webpack configuration file:

module.exports = {
    entry: ['./app.ts'],
    output: {
        filename: 'bundle.js',
        path: '/build'
    },
    resolve: {
        extensions: ['', '.ts', '.js' ]
    },
    devtool: 'source-map',
    module: {
        loaders: [
            { test: /\.ts$/, loader: 'ts?sourceMap!ts-jsx' }
        ]
    }
};

Trying to use the command: 'sudo chown -R whoami ~/.npm' didn't help.

Answer 1

A late answer, but it looks like you're trying to build in the root of the system (/build). For older versions of webpack use ./build on the property path. For the latest version of webpack (3.0 as today) path: path.resolve(__dirname, 'dist'), should work.

Answer 2

Webpack is trying to write to the /build directory. You do not seem to have permissions to write to it. You need to do sudo chown `whoami` /build in order to be able to write to it.