const crypto = require('crypto');
const VirtualModulesPlugin = require('webpack-virtual-modules');
const virtualModules = new VirtualModulesPlugin();

module.exports = {
    plugins: [
        new webpack.NormalModuleReplacementPlugin(/^module$/, function(resource) {
            const origin = resource.dependencies[0].originModule.rawRequest;
            const virtualModuleName = `virtual-module-for-${crypto.createHash('md5').update(origin).digest("hex")}`;
            virtualModules.writeModule(`node_modules/${virtualModuleName}`,`
                import config from 'config';
                export default {
                    config() {
                        return config['${origin}'] || {};
                    }
                };
            `);
            resource.request = virtualModuleName;
        }),
        virtualModules,
    ]
};